ChemPlusChem

Cover image for Vol. 79 Issue 12

Early View (Online Version of Record published before inclusion in an issue)

Editor: Neville Compton, Deputy Editor: Marisa Spiniello

Impact Factor: 3.242

ISI Journal Citation Reports © Ranking: 2013: 38/148 (Chemistry Multidisciplinary)

Online ISSN: 2192-6506

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal

VIEW

  1. 1 - 73
  1. Full Papers

    1. Multifunctional Floating Titania-Coated Macro/Mesoporous Photocatalyst for Efficient Contaminant Removal

      Linlin Zhang, Prof. Zipeng Xing, Hang Zhang, Prof. Zhenzi Li, Xiaodong Zhang, Yan Zhang, Prof. Li Li and Prof. Wei Zhou

      Article first published online: 22 DEC 2014 | DOI: 10.1002/cplu.201402327

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      Multifunctional catalyst: A multifunctional floating titania-coated macro/mesoporous photocatalyst is fabricated through a low-temperature ultrasonic and deposition route. The well-ordered mesoporous TiO2 is coated on polyurethane foam, which is key for its multifunctional properties. It possesses synergy of contaminant adsorption, dye degradation, and CrVI removal under sunlight (see figure).

    2. β-Ionic Conjugated Chlorin-Type Photosensitizers Based on Porpholactone: Synthesis, Photophysical Properties, and Photodynamic Activity

      Xian-Sheng Ke, Juan Tang, Juan-Juan Chen, Zheng-Yang Zhou and Prof. Dr. Jun-Long Zhang

      Article first published online: 22 DEC 2014 | DOI: 10.1002/cplu.201402356

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      It's terminal: Six tetrapentafluorophenylporpholactol zinc(II) complexes with β-hydrophilic chains terminated by glucosyl (neutral, ZnL1), sulfonic (anionic, ZnL2), zwitterionic (ZnL3), and quaternary ammonium groups (cationic, ZnL4–6) were synthesized and characterized (see figure). The relationship of β-ionic conjugates, cellular uptake, and intracellular photodynamic therapy activity was demonstrated and the mechanism of photoinduced cell death was studied.

    3. Subtle Differences in Initial Membrane Interactions Underpin the Selectivity of Small Antimicrobial Peptides

      Dr. Slavica Praporski, Dr. Adam Mechler, Prof. Frances Separovic and Prof. Lisandra L. Martin

      Article first published online: 22 DEC 2014 | DOI: 10.1002/cplu.201402318

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      Insane for the membrane: The membrane specificity of action of citropin 1.1, a 16-residue antimicrobial peptide, was studied by quartz crystal microbalance (QCM) measurements (see figure). The initial membrane interaction might determine whether the peptide transforms into the membrane-disrupting α-helical conformation. Subtle differences in the viscoelasticity measured by QCM signify the mechanistic pathway towards membrane disruption.

    4. Organoruthenium and Osmium Anticancer Complexes Bearing a Maleimide Functional Group: Reactivity to Cysteine, Stability, and Cytotoxicity

      Sally Moon, Dr. Muhammad Hanif, Mario Kubanik, Hannah Holtkamp, Dr. Tilo Söhnel, Dr. Stephen M. F. Jamieson and Prof. Christian G. Hartinger

      Article first published online: 21 DEC 2014 | DOI: 10.1002/cplu.201402390

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      Right on target: Functionalization of anticancer-active metal complexes with a maleimide moiety is aimed to facilitate the selective reaction with human serum albumin to exploit passive targeting of tumors through the enhanced permeability and retention (EPR) effect (see figure).

  2. Interviews

    1. You have free access to this content
      Jun-Long Zhang

      Article first published online: 18 DEC 2014 | DOI: 10.1002/cplu.201402409

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      My favorite molecule is porpholactone, because its structure between porphyrin and chlorin can lead to more derivatives having chemical and physical properties that are applicable in catalysis, optical materials, and biological research.

  3. Full Papers

    1. Synthesis and Characterization of a Biotinylated Multivalent Targeted Contrast Agent

      Dr. Serhat Gündüz, Dr. Anthony Power, Prof. Dr. Martin E. Maier, Prof. Dr. Nikos K. Logothetis and Priv.-Doz. Dr. Goran Angelovski

      Article first published online: 12 DEC 2014 | DOI: 10.1002/cplu.201402329

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      Target and amplify: A nanosized target-specific bimodal and multivalent contrast agent (CA) has been prepared and characterized. This dendrimeric CA bears the ligand biotin and allows dual modal readout by means of magnetic resonance and optical imaging techniques. The demonstrated specific binding to avidin-coated agarose gels and microspheres (see figure) opens new perspectives for high-affinity and high-resolution MRI of various cellular targets.

    2. Preparation, Formation Mechanism, and Photoresponse Properties of GeSe Microtubes with a Rectangular Cross Section

      Prof. Liang Shi, Yanan Li and Yumei Dai

      Article first published online: 11 DEC 2014 | DOI: 10.1002/cplu.201402333

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      Controlled growth: A solution approach for the fabrication of GeSe single-crystalline microtubes with rectangular cross sections has been developed, and the GeSe microtubes have a growth axis in the [010] direction and diameters in the range of 1–2 μm (see figure). Clear photoresponsive behavior is recorded for the as-synthesized GeSe microtubes.

  4. Communications

    1. Carbazolo[2,1-a]carbazole Diimide: A Building Block for Organic Electronic Materials

      Dr. Zheng Zhao, Zhongli Wang, Xu Zhang, Simin Gao, Dr. Xiaodi Yang, Dr. Zhiming Duan and Prof. Dr. Xike Gao

      Article first published online: 4 DEC 2014 | DOI: 10.1002/cplu.201402360

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      Designer molecules: A new class of carbazolo[2,1-a]carbazole diimides (1) has been designed (see figure). The synthesis, X-ray crystal structure, absorption spectra, and electrochemical properties of 1 as well as the charge transport properties and density functional calculations were investigated.

    2. A Nanostructured PLGA System for Cell Delivery of a Tetrathiahelicene as a Model for Helical DNA Intercalators

      Dr. Silvia Cauteruccio, Dr. Cristina Bartoli, Dr. Claudio Carrara, Davide Dova, Dr. Cesare Errico, Dr. Giulia Ciampi, Dr. Dinuccio Dinucci, Prof. Emanuela Licandro and Dr. Federica Chiellini

      Article first published online: 4 DEC 2014 | DOI: 10.1002/cplu.201402347

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      Deliver the goods: A preliminary study of the cellular uptake of a nanoconstruct obtained by loading poly(lactic-co-glycolic acid) (PLGA) nanoparticles with a tetrathiahelicene conjugated to a fluorescent rhodamine probe has been carried out. The ability to internalize the tetrathiahelicene and deliver it intracellularly has been investigated by means of cytotoxicity and cell uptake tests on Balb/3T3 clone A31 fibroblasts (see figure).

  5. Full Papers

    1. Single Flexible Janus Nanobelts to Realize Tunable and Enhanced Simultaneous Photoluminescent, Electrical, and Magnetic Trifunctionality

      Duanduan Yin, Qianli Ma, Prof. Xiangting Dong, Nan Lv, Jinxian Wang, Wensheng Yu and Guixia Liu

      Article first published online: 3 DEC 2014 | DOI: 10.1002/cplu.201402334

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      Multifunctional nanostructures: A novel nanostructure of a Janus nanobelt has been fabricated through a simple electrospinning process using a parallel spinneret. Compared with composite nanobelts, these Janus nanobelts possess higher fluorescent intensity, saturation magnetization, and conductivity owing to the isolation of Y2O3:Eu3+ nanoparticles from polyaniline and Fe3O4 nanoparticles (see figure).

  6. Cover Profiles

    1. You have free access to this content
      Lithium–Air Oxygen Shuttle Battery with a ZrO2-Based Ion-Conducting Oxide Electrolyte

      Dr. Atsushi Inoishi, Maki Matsuka, Prof. Takaaki Sakai, Dr. Young-Wan Ju, Prof. Shintaro Ida  and Prof. Tatsumi Ishihara 

      Article first published online: 2 DEC 2014 | DOI: 10.1002/cplu.201402380

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      “ …the new concept of an ”oxygen shuttle“ using a calcium-stabilized ZrO2 oxide ion conductor as the electrolyte is proposed …” Read more about the story behind the cover in the Cover Profile and about the research itself on page (DOI: 10.1002/cplu.201402041).

  7. Full Papers

    1. Zirconium and Hafnium Twin Monomers for Mixed Oxides

      Christian Schliebe, Dr. Thomas Gemming, Julian Noll, Lutz Mertens, Prof. Michael Mehring, Dr. Andreas Seifert, Prof. Stefan Spange and Prof. Heinrich Lang

      Article first published online: 2 DEC 2014 | DOI: 10.1002/cplu.201402338

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      Mixed doubles: The polymerization and copolymerization of M-containing twin monomers (M=Zr, Hf) is presented. The obtained hybrid materials were air-oxidized (see Figure) and the inorganic lattice (MO2 or SiO2/MO2) was examined by scanning and transmission electron microscopy, thermogravimetry, and temperature-dependent X-ray powder diffraction. The high-temperature crystallization of the mixed oxides was also studied.

  8. Cover Profiles

    1. You have free access to this content
      Selenium–Selenium Bond Cleavage of Diaryl Diselenide Radical Anions During Pulse Radiolysis

      Sachiko Tojo, Dr. Mamoru Fujitsuka, Dr. Akihiko Ouchi and Prof. Dr. Tetsuro Majima

      Article first published online: 2 DEC 2014 | DOI: 10.1002/cplu.201402376

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      “By using radiation chemical techniques, each step such as radical anion formation, Se[BOND]Se bond stretching, and cleavage, was observed and the kinetics was characterized quantitatively.” Read more about the story behind the cover in the Cover Profile and about the research itself on page (DOI: 10.1002/cplu.201402300).

  9. Cover Pictures

    1. You have free access to this content
      Selenium–Selenium Bond Cleavage of Diaryl Diselenide Radical Anions During Pulse Radiolysis

      Sachiko Tojo, Dr. Mamoru Fujitsuka, Dr. Akihiko Ouchi and Prof. Dr. Tetsuro Majima

      Article first published online: 25 NOV 2014 | DOI: 10.1002/cplu.201402375

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      The cover picture shows the mechanism of Se–Se σ-bond cleavage of the di-α-naphthyl diselenide radical anion (orange) to form an α-naphthylselenyl radical (dark blue) and an α-naphthylselenyl anion based on the transient absorption spectroscopic change during pulse radiolysis. An unpaired electron is initially localized in the σ* orbital of an elongated Se–Se σ-bond (orange), and then delocalized over two naphthalene rings and Se–Se bond (green) as a result of the interaction between two naphthalene π* orbitals and a Se–Se σ* orbital. Details are given in the Full Paper by Tetsuro Majima et al. (DOI: 10.1002/cplu.201402300).

    2. You have free access to this content
      Lithium–Air Oxygen Shuttle Battery with a ZrO2-Based Ion-Conducting Oxide Electrolyte

      Dr. Atsushi Inoishi, Maki Matsuka, Prof. Takaaki Sakai, Dr. Young-Wan Ju, Prof. Shintaro Ida and Prof. Tatsumi Ishihara

      Article first published online: 25 NOV 2014 | DOI: 10.1002/cplu.201402379

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      The cover picture shows a newly proposed concept for solid-state Li–air batteries. These batteries are investigated based on an “oxygen shuttle” using a calcium-stabilized ZrO2 electrolyte. The observed open-circuit voltage and discharge capacity are 1.81 V and 2179 mAh per gram of lithium at 1273 K, respectively. Details are given in the Full Paper by Tatsumi Ishihara et al. (DOI: 10.1002/cplu.201402041).

  10. Full Papers

    1. A Combinatorial Study of Photoelectrochemical Properties of Fe-W-O Thin Films

      Kirill Sliozberg, Dr.  Dominik. Schäfer, Robert Meyer, Prof. Dr. Alfred Ludwig and Prof. Dr. Wolfgang Schuhmann

      Article first published online: 24 NOV 2014 | DOI: 10.1002/cplu.201402277

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      Film library: The photoelectrochemical properties of compositions from a ternary Fe-W-O materials library strongly depend on the Fe/W ratio as well as the processing parameters. Photoelectrochemical screening was performed by using an automated optical scanning droplet cell on a continuous thin-film materials library with a controlled gradient of compositions. The maximal photocurrent was obtained from a measurement area containing 55 at % Fe (see figure).

    2. Control of Spatial Organization of Electrospun Fibers in a Carbon Felt for Enhanced Bioelectrode Performance

      Adriana Both Engel, Aziz Cherifi, Dr. Mikhael Bechelany, Dr. Sophie Tingry and Prof. Dr. David Cornu

      Article first published online: 24 NOV 2014 | DOI: 10.1002/cplu.201402324

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      How does it feel? Electrospun carbon felts were synthesized with either aligned or randomly distributed fibers (see picture). Resistivity measurements were realized to try to establish a normalized procedure for fibrous materials. Felts were modified with the enzyme laccase and tested towards the oxygen reduction reaction, which is typical for the cathode part of a biofuel cell.

  11. Communications

    1. A Naphthalenediimide-Based Fluorescent Sensor for Detecting the pH within the Rough Endoplasmic Reticulum of Living Cells

      Namdev V. Ghule, Dr. Rajesh S. Bhosale, Dr. Kiran Kharat, Dr. Avinash L. Puyad, Dr. Sheshanath V. Bhosale and Dr. Sidhanath V. Bhosale

      Article first published online: 20 NOV 2014 | DOI: 10.1002/cplu.201402307

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      Doing the two-step: An amino-core-substituted naphthalenediimide (NDI) derivative has been synthesized in good yield in two steps. The NDI bearing a diamine moiety undergoes a reversible protonation–deprotonation process, which results in intensity changes in the absorption and emission spectra (see figure). This derivative exhibits good photostability, good selectivity, and high sensitivity and is found to exhibit pH selectivity within the rough endoplasmic reticulum of living cells.

    2. The Generation Effect: Cavity Accessibility in Dense-Shell Polyphenylene Dendrimers

      Dr. Malte Brutschy, Dr. René Stangenberg, Cornelia Beer, Dr. Daniel Lubczyk, Prof. Martin Baumgarten, Prof. Klaus Müllen and Prof. Siegfried R. Waldvogel

      Article first published online: 18 NOV 2014 | DOI: 10.1002/cplu.201402298

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      It’s all relative: The confined geometry of polyphenylene dendrimers leads to a clear generation effect because the size and access to the voids in these dendrimers is determined by their generation. Host–guest behavior to benzene, toluene, and xylenes (BTX) analytes was investigated by using quartz crystal microbalances.

  12. Full Papers

    1. d7/d8 Metal Complexes Constructed from 2,6-Bis(2-benzimidazolyl)pyridyl or 2,6-Di-(pyrazol-3-yl)pyridine Derivatives: Synthesis, Structure, Characterization, and Photocatalytic Activity

      Si Yue Wei, Jian Ling Wang, Cai Shun Zhang, Xue-Ting Xu, Xiao Xi Zhang, Ji Xiao Wang and Prof. Yong-Heng Xing

      Article first published online: 17 NOV 2014 | DOI: 10.1002/cplu.201402255

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      A coordinated approach: The coordination complexes [Co(HL1)2], [Ni(HL1)2], and [Ni3(H2L2)2(HL2)2](OH)3(Ac)H2O (H2L1=2,6-bis(benzimidazol-2-yl)pyridine, H2L2=2,6-di-(5-phenyl-1H-pyrazol-3-yl)pyridine) have been synthesized and characterized systematically. Surface photovoltage spectroscopy indicates p-type semiconductor characteristics and the ability to act as a photocatalyst to degrade the dye methylene blue (MB; see figure).

    2. Facile Synthesis of Hierarchical Magnesium Silicate Hollow Nanofibers Assembled by Nanosheets as an Efficient Adsorbent

      Renxi Jin, Yang Yang, Yunfeng Li, Dr. Xiaodan Yu, Prof. Yan Xing, Dr. Shuyan Song and Prof. Zhan Shi

      Article first published online: 14 NOV 2014 | DOI: 10.1002/cplu.201402293

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      Drop out! A synthetic route is described for the fabrication of magnesium silicate double-walled hollow nanofibers (MSHNFs; see picture), which exhibit excellent adsorption performance and can be easily separated from solution, from electrospun silica hollow nanofibers (SHNFs). The MSHNFs are demonstrated to be an efficient adsorbent for water purification.

  13. Reviews

    1. The Development of Zn–Ce Hybrid Redox Flow Batteries for Energy Storage and Their Continuing Challenges

      Prof. Frank C. Walsh, Dr. Carlos Ponce de Léon, Dr. Len Berlouis, Dr. George Nikiforidis, Luis F. Arenas-Martínez, Dr. David Hodgson and Dr. David Hall

      Article first published online: 13 NOV 2014 | DOI: 10.1002/cplu.201402103

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      The ebb and flow: The hybrid redox flow battery (RFB) Zn–Ce has the highest open-circuit cell potential at 2.4 V, amongst other aqueous RFBs. This review considers the thermodynamics and kinetics aspects of the CeIV/CeIII and Zn/ZnII redox couples and the operational variables, materials, cell design and performance used in RFBs (see figure). Challenges and the need for further science and technological development are highlighted.

  14. Full Papers

    1. Facile Synthesis of Gold-Modified Platinum Catalysts with High Performance for Formic Acid Electro-oxidation

      Ke Zhang, Fangfang Ren, Huiwen Wang, Caiqing Wang, Dr. Mingshan Zhu and Prof. Yukou Du

      Article first published online: 12 NOV 2014 | DOI: 10.1002/cplu.201402231

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      Superior replacement: Bimetallic gold/platinum electrocatalysts with different atomic ratios can be facilely fabricated through a galvanic replacement reaction. Electrochemical measurements reveal that these catalysts exhibit highly efficient and stable electrocatalytic performances towards formic acid oxidation in an acidic medium (see figure).

    2. Halide-Ion-Assisted Synthesis of Different α-Fe2O3 Hollow Structures and Their Lithium-Ion Storage Properties

      Dr. Ruguang Ma, Man Wang, Duc Tai Dam, Dr. Yucheng Dong, Prof. Yu Chen, Prof. Seung Ki Moon, Prof. Yong-Jin Yoon and Prof. Jong-Min Lee

      Article first published online: 12 NOV 2014 | DOI: 10.1002/cplu.201402236

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      A hollow victory: Hollow α-Fe2O3 self-assemblies with different structures have been synthesized by a halide-ion-assisted solvothermal method. Selective absorption of halide ions plays an important role in shaping the self-assemblies (see scheme), and Ostwald ripening speeded up by acidic etching determines the final hollow structures.

    3. Folate–Cyclodextrin Conjugates as Carriers of the Platinum(IV) Complex LA-12

      Valentina Giglio, Dr. Valentina Oliveri, Dr. Maurizio Viale, Rosaria Gangemi, Prof. Giovanni Natile, Dr. Francesco P. Intini and Prof. Graziella Vecchio

      Article first published online: 11 NOV 2014 | DOI: 10.1002/cplu.201402342

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      Drugs included: The antitumor drug cistranscis-[PtCl2(CH3CO2)2(adamantlyamine)(NH3)] (LA-12) co-administered with 3- or 6-functionalised β-cyclodextrin conjugated with γ-folate (βCyD3-FAγ or βCyD6-FAγ) as an inclusion complex showed IC50 values significantly lower than that of LA-12 alone or LA-12 co-administered with βCyD in folate receptor-overexpressing cancer cells (see figure).

  15. Communications

    1. Competitive Adsorption of PbII, NiII, and SrII Ions on Graphene Oxides: A Combined Experimental and Theoretical Study

      Dr. Shubin Yang, Prof. Dr. Changlun Chen, Dr. Yue Chen, Jiaxing Li, Prof. Dr. Dongqi Wang, Prof. Dr. Xiangke Wang and Prof. Dr. Wenping Hu

      Article first published online: 7 NOV 2014 | DOI: 10.1002/cplu.201402284

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      Ready, set, GO! The adsorption of PbII, NiII, and SrII on graphene oxides (GOs) has been investigated by experimental and density functional theory studies. The results indicate that PbII and NiII prefer to interact with COH, whereas SrII interacts with COH and COC comparably and PbII can abstract OH from GOs to form the more stable Pb(OH)–GO complex (see figure).

  16. Full Papers

    1. Electropolymerisation of Catalytically Active PEDOT from an Ionic Liquid on a Flexible Carbon Cloth Using a Sandwich Cell Configuration

      Muhammad E. Abdelhamid, Dr. Graeme A. Snook and Dr. Anthony P. O'Mullane

      Article first published online: 4 NOV 2014 | DOI: 10.1002/cplu.201402235

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      Taking the cloth: The electropolymerization of poly(3,4-ethylenedioxythiophene) from the ionic liquid butyl-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide on flexible carbon cloth electrodes is reported (see figure). Compact films with high doping levels and conductivity are fabricated that demonstrate catalytic activity over a wide pH range for the oxygen reduction reaction, which is also tolerant to the presence of methanol.

    2. Mechanistic Details of the Membrane Perforation and Passive Translocation of TAT Peptides

      Stefania Piantavigna, Muhammad E. Abdelhamid, Dr. Chuan Zhao, Dr. Xiaohu Qu, George A. McCubbin, Dr. Bim Graham, Prof. Leone Spiccia, Dr. Anthony P. O'Mullane and Prof. Lisandra L. Martin

      Article first published online: 30 OCT 2014 | DOI: 10.1002/cplu.201402209

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      The worm turns: How does the TAT peptide translocate across a mammalian cell membrane? Three biophysical methods, which can spatially resolve scales from millimeter (quartz crystal microbalance with dissipation (QCM-D)) and micrometer (scanning electrochemical microscopy (SECM)) to nanometer (AFM), provide evidence for wormhole-like pores (see figure). The SECM image shows that these pores allow redox mediators to pass through to the sensor, but TAT disrupts bacterial-mimetic membranes.

    3. Electrospun SnSb Crystalline Nanoparticles inside Porous Carbon Fibers as a High Stability and Rate Capability Anode for Rechargeable Batteries

      Dr. Konda Shiva, Hongahally B. Rajendra and Prof. Aninda J. Bhattacharyya

      Article first published online: 30 OCT 2014 | DOI: 10.1002/cplu.201402291

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      An alloy spin-off: An optimum configuration of SnSb nanoparticles inside uniform porous carbon nanofibers (SnSb–C) has been synthesized by the electrospinning technique combined with a sintering protocol (see figure). The SnSb–C exhibits high electrochemical lithium stability and current capabilities over a wide range of currents. Apart from storing high amounts of lithium, SnSb–C also exhibits excellent sodium-ion cyclability.

    4. Electrochromic Devices Based on Disubstituted Oxo-Bipyridinium Ionic Liquids

      Noémi Jordão, Dr. Hugo Cruz, Aida Branco, Prof. Fernando Pina and Dr. Luis C. Branco

      Article first published online: 30 OCT 2014 | DOI: 10.1002/cplu.201402232

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      Switchable electrochromism: Electrochromic symmetric and non-symmetric disubstituted oxo-bipyridinium ionic liquids are synthesised and characterised (see figure). Efficient and reversible electrochromic devices are developed through the combination of the most capable disubstituted oxo-bipyridinium ionic liquids with transparent electrolytes. These electrochromic devices may open perspectives for future applications as alternative electrochromic car rear-view mirrors and smart windows.

    5. Effect of Bromine Complexing Agents on the Performance of Cation Exchange Membranes in Second-Generation Vanadium Bromide Battery

      Suminto Winardi, Grace Poon, Mani Ulaganathan, Aishwarya Parasuraman, Qingyu Yan, Nyunt Wai, Tuti Mariana Lim and Maria Skyllas–Kazacos

      Article first published online: 27 OCT 2014 | DOI: 10.1002/cplu.201402260

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      Battery performance: Complexing agents affect the performance of both ChiNaf and VF11 membranes used in vanadium bromide redox flow cells owing to the formation of an organic layer on the membrane surface, which acts as an insulation barrier, and thus, increases membrane resistance. The VF11 membrane performs better than ChiNaf, with a higher coulombic efficiency and energy efficiency (see figure).

    6. Facile Synthesis of Copper-Based Metal Oxide Nanoparticles with Exceptional Catalytic Activity for the Selective Oxidation of Styrenes into Benzaldehydes

      Danhua Ge, Jiaqing Wang, Hongbo Geng, Shuanglong Lu, Dongtao Wang, Prof. Xinming Li, Xianli Zhao, Prof. Xueqin Cao and Prof. Hongwei Gu

      Article first published online: 24 OCT 2014 | DOI: 10.1002/cplu.201402319

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      Talkin′ about our generation: Copper-based metal oxide (CuO, CuO/Co3O4) nanoparticles have been synthesized from coordination-driven self-assembling aggregates and calcination treatment. They exhibited exceptional catalytic activity and stability for the selective oxidation of styrene and its derivatives to generate the corresponding aldehydes (see figure; TBHP=tert-butyl hydroperoxide).

    7. Selenium–Selenium Bond Cleavage of Diaryl Diselenide Radical Anions During Pulse Radiolysis

      Sachiko Tojo, Dr. Mamoru Fujitsuka, Dr. Akihiko Ouchi and Prof. Dr. Tetsuro Majima

      Article first published online: 24 OCT 2014 | DOI: 10.1002/cplu.201402300

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      Studying ArSe: An unpaired electron of αNpSeSeαNp. is localized in the Se[BOND]Se σ* orbital with an elongated Se[BOND]Se bond at 77 K. As the temperature increases, αNpSeSeαNp. changes to Intermediate. with an absorption at longer wavelength owing to the conformational change, in which an unpaired electron is delocalized in the interaction between the π* and σ* orbital (see scheme).

  17. Communications

    1. Size-Induced Chiral Discrimination Switching by (S)-(−)-2(α-Hydroxyethyl)Benzimidazole-Derived Azacrowns

      Dr. Anita D. Pandey, Hasan Mohammed, Dr. Raghuvir R. S. Pissurlenkar and Prof. Anil V. Karnik

      Article first published online: 21 OCT 2014 | DOI: 10.1002/cplu.201402141

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      Switching sides: The size of a chiral azacrown rather than the configuration of the chiral center/s in the hosts is the dominant influence on the enantioselective binding of guests. Thus, S-(−)-2(α-hydroxyethyl)benzimidazole-derived [15]crown-5 azacrown exhibit a preference for the S enantiomer of amino guests, whereas S-(−)-2(α-hydroxyethyl)benzimidazole-derived [18]crown-6 azacrowns exhibit a preference for the R enantiomer (see scheme).

  18. Reviews

    1. Air Electrode for the Lithium–Air Batteries: Materials and Structure Designs

      Prof. Zhaoyin Wen, Chen Shen and Dr. Yan Lu

      Article first published online: 21 OCT 2014 | DOI: 10.1002/cplu.201402104

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      Air power: The energy storage capacity and power capability of Li–air batteries are determined by the air electrode. The electrocatalytic oxygen reaction occurs at a three-phase contact zone between air, liquid electrolyte, and solid catalyst. In aqueous electrolytes, oxygen is reduced to OH, which is dissolved into the electrolyte (see figure). In cells based on organic electrolyte, only the oxygen dissolved in the electrolyte participates in the oxygen reduction.

  19. Communications

    1. Azacrown Ethers from Mustard Carbonate Analogues

      Dr. Fabio Aricò, Ilina Udrea, Marco Crisma and Pietro Tundo

      Article first published online: 16 OCT 2014 | DOI: 10.1002/cplu.201402299

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      Crowning glory: Several diazacrown ethers incorporating nitrogen mustard moieties have been prepared by treating harmless mustard carbonates with aromatic diols in the absence of any base under pseudo-high dilution conditions (see scheme). This novel synthesis relied upon the anchimeric effect of the nitrogen mustard carbonate.

  20. Full Papers

    1. Synthesis of NiGa2O4 Octahedron Nanocrystal with Exposed {111} Facets and Enhanced Efficiency of Photocatalytic Water Splitting

      Shi-Xiong Zhou, Dr. Xiao-Jun Lv, Chen Zhang, Dr. Xing Huang, Lei Kang, Prof. Zhe-shuai Lin, Prof. Yong Chen and Prof. Wen-Fu Fu

      Article first published online: 16 OCT 2014 | DOI: 10.1002/cplu.201402279

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      Photocatalytic activity: Octahedral NiGa2O4 with highly reactive pH-dependent {111} facets have been synthesized through a facile hydrothermal route without using any template or organic surfactant. The {111} facets of octahedral NiGa2O4 display enhanced photocatalytic generation of hydrogen from water splitting and good photocatalytic stability (see figure).

    2. NaGdF4 Nanoparticles Coated with Functionalised Ethylenediaminetetraacetic Acid as Versatile Probes for Dual Optical and Magnetic Resonance Imaging

      Dr. Fabio Carniato, Dr. Lorenzo Tei, Dr. Suratchanee Phadngam, Prof. Ciro Isidoro and Prof. Mauro Botta

      Article first published online: 16 OCT 2014 | DOI: 10.1002/cplu.201402245

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      Caught on camera: NaGdF4 nanoparticles coated with ethylenediaminetetraacetic acid (EDTA) chelators functionalized with organic moieties and luminescent dyes were prepared and characterized, and their potential as dual probes for optical/magnetic resonance imaging (MRI) imaging was investigated (see figure).

  21. Communications

    1. Manipulation and Orientation of Zeolite L by Using a Magnetic Field

      Dr. Sandra Fibikar, Dr. Gianluigi Luppi, Dr. Victor Martínez-Junza, Dr. Miguel Clemente-León and Prof. Dr. Luisa De Cola

      Article first published online: 16 OCT 2014 | DOI: 10.1002/cplu.201402252

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      Made to measure: A simple approach for the functionalization of cylindrically shaped zeolite L crystals with iron oxide magnetic nanoparticles is reported. These functionalized zeolites can be aligned very easily by applying a magnetic field in solution, on different substrates, and in a polymeric matrix (see figure).

  22. Full Papers

    1. Thermoresponsive Polymer Nanoparticles Based on Viologen Cavitands

      Elza D. Sultanova, Ekaterina G. Krasnova, Dr. Sergey V. Kharlamov, Gulnaz R. Nasybullina, Prof. Vitaly V. Yanilkin, Dr. Irek R. Nizameev, Prof. Marsil K. Kadirov, Rezeda K. Mukhitova, Prof. Lucia Y. Zakharova, Dr. Albina Y. Ziganshina and Prof. Alexander I. Konovalov

      Article first published online: 14 OCT 2014 | DOI: 10.1002/cplu.201402221

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      An act of viologens: The study of new polymer nanoparticles that consist of viologen cavitands linked with styrene bridges is reported. The nanoparticles feature temperature-controlled binding and release of substrates, as shown by the fluorescent dye rhodamine B (see scheme). Changing the temperature from 25 to 40 °C resulted in a significant enhancement in the permeability of the nanoparticle shell for the passage of rhodamine B.

  23. Communications

    1. Self-Assembled Squalene-based Fluorescent Heteronanoparticles

      Dr. Stella Borrelli, Dr. Daniele Cartelli, Dr. Francesco Secundo, Dr. Gaia Fumagalli, Dr. Michael S. Christodoulou, Dr. Ambra Borroni, Dr. Dario Perdicchia, Prof. Dr. Franco Dosio, Dr. Paola Milla, Prof. Dr. Graziella Cappelletti and Prof. Dr. Daniele Passarella

      Article first published online: 10 OCT 2014 | DOI: 10.1002/cplu.201402239

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      Illuminating the dynamic of internalization: Fluorescent heteronanoparticles have been prepared by exploiting the self-assembling property of squalene-based conjugate compounds. The internalization of these nanoparticles was visualized in cultured A549 cancer cells (see picture).

  24. Full Papers

    1. Diastereoselective Nitroaldol Reaction Catalyzed by Binuclear Copper(II) Complexes in Aqueous Medium

      Rajendran Arunachalam, Chirayil S. Aswathi, Dr. Anjan Das, Dr. Rukhsana I. Kureshy and Dr. Palani S. Subramanian

      Article first published online: 8 OCT 2014 | DOI: 10.1002/cplu.201402200

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      In a twist: Binuclear double-stranded CuII helicates were explored as catalyst for the nitroaldol reaction in aqueous medium (see figure).

    2. One-Pot Fabrication of Layered α-Phase Nickel–Cobalt Hydroxides as Advanced Electrode Materials for Pseudocapacitors

      Dr. Haichao Chen, Prof. Dr. Jianjun Jiang, Dr. Li Zhang, Yuandong Zhao, Danqing Guo, Yunjun Ruan and Dandan Xia

      Article first published online: 2 OCT 2014 | DOI: 10.1002/cplu.201402214

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      Nanosheet arrays: Nickel-cobalt hydroxide nanosheets in the α phase and their arrays on Ni foam are synthesized with the help of 1-methyl-2-pyrrolidone. Their electrochemical properties are tuned by varying the Ni and Co contents. The bimetallic Ni–Co hydroxides exhibit much higher specific capacitances with improved rate capabilities and cycling stabilities compared with monometallic Ni hydroxide (see figure).

    3. Design of Highly Porous Single-Site Catalysts through Two-Step Postsynthetic Modification of Mixed-Linker MIL-53(Al)

      Dipl.-Chem. Meike A. Gotthardt, Dipl.-Chem. Roland Schoch, Dipl.-Chem. Tobias S. Brunner, Prof. Dr. Matthias Bauer and Dr. Wolfgang Kleist

      Article first published online: 2 OCT 2014 | DOI: 10.1002/cplu.201402123

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      Holey MOFs! Defined single-site palladium catalysts have been synthesized through postsynthetic modification (PSM) of mixed-linker metal–organic frameworks (MIXMOFs). The high porosity of the MIXMOF catalysts was retained throughout the modification process. This resulted in accessible and highly active catalytic sites for Heck-type C[BOND]C coupling reactions.

  25. Minireviews

    1. A Review of the Iron–Air Secondary Battery for Energy Storage

      Dr. R. D. McKerracher, Dr. Carlos Ponce de Leon, Dr. R. G. A. Wills, Dr. A. A. Shah and Prof. Frank C. Walsh

      Article first published online: 26 SEP 2014 | DOI: 10.1002/cplu.201402238

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      Breathing space: The figure shows a unit iron–air cell with the structure of the bifunctional air-breathing cathode for the reduction and evolution of oxygen, the electrolyte, and the iron anode. This Minireview analyzes the history and recent developments of this system and highlights the challenges and opportunities that the low-cost iron–air cell provides.

  26. Full Papers

    1. Assembling Mixed Carboxylic Acid Molecules on Hierarchical Structured Aluminum Substrates for the Fabrication of Superoleophobic Surfaces with Controlled Oil Adhesion

      Prof. Dr. Zhongjun Cheng, Dr. Hua Lai, Dr. Ying Du, Dr. Rui Hou, Dr. Chong Li, Prof. Dr. Naiqing Zhang and Prof. Dr. Kening Sun

      Article first published online: 22 SEP 2014 | DOI: 10.1002/cplu.201402237

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      Like oil and water: Superoleophobic surfaces with tunable adhesion were obtained by assembling mixed carboxylic acid on nanostructured aluminum substrates. The surface adhesion can be controlled by simply controlling the surface chemical composition (see figure).

    2. DNA Targeting by Cationic Porphyrin–Ruthenium(II) Conjugates

      Dr. Caterina Musetti, Dr. Cinzia Spagnul, Dr. Giuliana Mion, Dr. Sivia Da Ros, Prof. Teresa Gianferrara and Prof. Claudia Sissi

      Article first published online: 22 SEP 2014 | DOI: 10.1002/cplu.201402275

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      Making light work: Cationic porphyrin–ruthenium(II) conjugates (see figure) bind DNA and are extremely efficient in cleaving it upon irradiation, regardless of its structural arrangement. The conjugates are promising photosensitizer agents for photodynamic therapy.

    3. Understanding Aqueous Electrolyte Stability through Combined Computational and Magnetic Resonance Spectroscopy: A Case Study on Vanadium Redox Flow Battery Electrolytes

      Dr. Murugesan Vijayakumar, Zimin Nie, Dr. Eric Walter, Dr. Jianzhi Hu, Dr. Jun Liu, Vincent Sprenkle and Dr. Wei Wang

      Article first published online: 18 SEP 2014 | DOI: 10.1002/cplu.201402139

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      Go with the flow: Combined NMR spectroscopy and computational analysis has provided a comprehensive understanding of vanadium solvation chemistry. Such molecular-level knowledge helped in the design of optimal electrolytes, which led to a highly stable and better performing redox flow battery (see figure).

    4. Activated-Carbon-Supported Gold–Cesium(I) as Highly Effective Catalysts for Hydrochlorination of Acetylene to Vinyl Chloride

      Dr. Jia Zhao, Jiangtao Xu, Jinhui Xu, Jun Ni, Tongtong Zhang, Xiaoliang Xu and Prof. Dr. Xiaonian Li

      Article first published online: 18 SEP 2014 | DOI: 10.1002/cplu.201402176

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      Performance-enhanced doping: CsCl was employed as an additive to gold supported on an activated carbon (AC) catalyst, with the aim of mitigating deactivation of monometallic gold/AC caused mainly by the reduction of Au3+ at the reaction temperature of 180 °C (see figure). The prepared bimetallic Au[BOND]CsI/AC turned out to be an ideal catalyst, with not simply slightly enhanced activity, but clearly improved stability.

    5. In Situ Synthesis of Neutral Dinuclear Rhodium Diphosphine Complexes [{Rh(diphosphine)(μ2-X)}2]: Systematic Investigations

      Antje Meißner, Dr. Angelika Preetz, Dr. Hans-Joachim Drexler, Priv.-Doz. Dr. Wolfgang Baumann, Dr. Anke Spannenberg, Anja König and Prof. Dr. Detlef Heller

      Article first published online: 18 SEP 2014 | DOI: 10.1002/cplu.201402213

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      Rh revisited: The commonly applied in situ method for the preparation of neutral Rh complexes of the type [{Rh(PP)(μ2-X)}2] by addition of diphosphine ligand (2 equiv) to different rhodium precursors might not be as straightforward and selective as generally thought. The outcome is strongly affected by the nature of the diolefin present in the ancillary (diphosphine) ligand, the catalyst precursor, the solvent, and the temperature (see figure).

  27. Cover Pictures

    1. You have free access to this content
      Electropolymerisation of Catalytically Active PEDOT from an Ionic Liquid on a Flexible Carbon Cloth Using a Sandwich Cell Configuration

      Muhammad E. Abdelhamid, Dr. Graeme A. Snook and Dr. Anthony P. O'Mullane

      Article first published online: 18 SEP 2014 | DOI: 10.1002/cplu.201402303

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      The back cover picture shows a carbon cloth electrode being coated with the conducting polymer poly(3,4-ethylenedioxythiopene) PEDOT via an electrochemical process using a sandwich cell configuration. The cloth maintains its flexibility while ensuring a homogeneous coverage with PEDOT. The electrode is then used as an oxygen reduction catalyst which operates under both alkaline and acidic conditions while also being tolerant to the presence of methanol in the electrolyte. Details are given in the Full Paper by Anthony P. O’Mullane et al. (DOI: 10.1002/cplu.201402235).

  28. Communications

    1. Two-Step Directional Surface Modification of Iron Oxide Nanoparticles with Protected Siloxanes

      Maarten Bloemen, Ben Sutens, Dr. Ward Brullot, Prof. Ann Gils, Dr. Nick Geukens and Prof. Thierry Verbiest

      Article first published online: 15 SEP 2014 | DOI: 10.1002/cplu.201402283

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      Nanoparticle functionality: Iron oxide nanoparticles are functionalized by protected functional siloxanes. The functional group is deprotected on the nanoparticle itself, solving multiple issues related to the use of siloxanes. This procedure is highly reproducible and not limited to the discussed functionalities.

    2. Reactive Sputtering of Plasmonic Pt/ZnO Films for Decomposition of Gas-Phase Methanol under Visible Light

      Prof. Hongjun Wu, Yue Ma, Yang Wang, Yang Gao, Dandan Yuan and Prof. Zhonghai Zhang

      Article first published online: 11 SEP 2014 | DOI: 10.1002/cplu.201402175

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      Plasmon resonance: Photocatalytic films of ZnO coated with ultrathin (2 nm) Pt (see figure) are prepared by a sputtering method, and the Pt/ZnO films show an efficient visible-light photoresponse for the decomposition of gas-phase methanol owing to the unique surface plasmon resonance of the Pt film.

  29. Full Papers

    1. Enantioselective Oxidation of Thioethers to Sulfoxides by Means of a Structural Template with Chiral-at-Metal Ruthenium Complexes

      Zheng-Zheng Li, Su-Yang Yao and Prof. Dr. Bao-Hui Ye

      Article first published online: 11 SEP 2014 | DOI: 10.1002/cplu.201402243

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      Delta force: Treatment of Δ-[Ru(bpy)2(py)2]2+ (bpy=2,2′-bipyridine, py=pyridine) or Λ-[Ru(bpy)2(py)2]2+ with thioether ligands, then oxidation in situ, provides the corresponding Δ-[Ru(bpy)2{(R)-OSO[BOND]R}]+ or Λ-[Ru(bpy)2{(S)-OSO[BOND]R}]+ with 98 % ee values, which can be converted into the corresponding chiral sulfoxides in yields of 90 % with 83–93 % ee values (see scheme).

    2. Soluble Xanthate Compounds for the Solution Deposition of Metal Sulfide Thin Films

      Lauren K. Macreadie, Dr. Helen E. Maynard-Casely, Prof. Stuart R. Batten, Dr. David R. Turner and Dr. Anthony S. R. Chesman

      Article first published online: 8 SEP 2014 | DOI: 10.1002/cplu.201402110

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      Film studies: A range of metal ethylxanthate compounds that are highly soluble in benign solvents have been demonstrated to thermolyse cleanly to give metal sulfide thin films (see figure). The evolution of the crystalline metal sulfide thin films deposited by solution-processable methods were examined by using synchrotron-based in situ variable-temperature X-ray diffraction measurements.

    3. Oxygen-Plasma-Functionalized Carbon Nanotubes as Supports for Platinum–Ruthenium Catalysts Applied in Electrochemical Methanol Oxidation

      Dr. Raghuram Chetty, Dr. Kranthi Kumar Maniam, Prof. Dr. Wolfgang Schuhmann and Prof. Dr. Martin Muhler

      Article first published online: 5 SEP 2014 | DOI: 10.1002/cplu.201402192

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      Oxidation after treatment: Carbon nanotubes functionalized by oxygen plasma have been used as supports for platinum–ruthenium nanoparticles for electrochemical methanol oxidation. The plasma treatment time has been optimized, and platinum–ruthenium nanoparticles dispersed on optimum oxygen-plasma-treated carbon nanotubes exhibit maximum catalytic activity towards methanol oxidation (see figure).

    4. Functionalizing the Surface of Lithium-Metal Anodes

      Megan Buonaiuto, Susanna Neuhold, David J. Schroeder, Carmen M. Lopez and John T. Vaughey

      Article first published online: 3 SEP 2014 | DOI: 10.1002/cplu.201402084

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      Interfacing: Stabilizing the surface of lithium metal is an important challenge that must be overcome to enable lithium–air or lithium–sulfur batteries to succeed. Controlling the interface between the electrolyte and lithium is thus critical. By attaching vinyl-containing silanes to the hydroxy-terminated surface of lithium metal, a critical functional group is introduced at this interface that can be used to tailor this critical interaction (see figure; scale bars: 500 μm).

    5. Functionalized Tri- and Tetraphosphine Ligands as a General Approach for Controlled Implantation of Phosphorus Donors with a High Local Density in Immobilized Molecular Catalysts

      Dr. Matthieu Beaupérin, Dr. Radomyr Smaliy, Dr. Hélène Cattey, Prof. Dr. Philippe Meunier, Dr. Jun Ou, Prof. Dr. Patrick H. Toy and Prof. Dr. Jean-Cyrille Hierso

      Article first published online: 26 AUG 2014 | DOI: 10.1002/cplu.201402195

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      Lean on Me: Modular formation of functionalized polyphosphines is a general solution for generating localized high-density phosphorus donors on supports. The conformational arrangement of P donors in the immobilized catalysts is evidenced by 31P NMR spectroscopic “through-space” coupling. Pd-catalyzed direct C[BOND]H arylation of heteroaromatics with chloroarenes illustrates the performance of these polydentate catalytic materials.

    6. Very Important Paper

      5-(1H-Tetrazolyl)-2-Hydroxy-Tetrazole: A Selective 2N-Monoxidation of Bis(1H-Tetrazole)

      Prof. Dr. Thomas M. Klapötke, Matthias Q. Kurz, Regina Scharf, Philipp C. Schmid, Jörg Stierstorfer and Dr. Muhamed Sućeska

      Article first published online: 19 AUG 2014 | DOI: 10.1002/cplu.201402124

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      Energetic materials: Following the recent trend in the synthesis of new energetic materials with high densities and stabilities, the first bistetrazole 2N-monoxide was prepared (see figure). 5-(1H-Tetrazolyl)-2-hydroxy-tetrazole and several energetic salts were synthesized, characterized, and compared with RDX and other energetic tetrazole-N-oxides.

    7. A Vanadium–Cerium Redox Flow Battery with an Anion-Exchange Membrane Separator

      Sukhwan Yun, Dr. Javier Parrondo and Prof. Vijay Ramani

      Article first published online: 8 AUG 2014 | DOI: 10.1002/cplu.201402096

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      Membranes in charge: Quaternized cardo-poly(etherketone) (QPEK-C) anion-exchange membranes (AEMs) have been prepared and employed as a separator in a redox flow battery [carbon felt|V3+, V2+ (0.5 M)||carbon felt|Ce4+, Ce3+ (0.5 M)]. The low cation permeability of the AEM together with its good mechanical and chemical stability give this material improved coulombic efficiency (CE) and energy efficiency (EE) during cycling (see figure).

  30. Communications

    1. Mechanical Model of Globular Transition in Polymers

      Dr. Simon Tricard, Dr. Robert F. Shepherd, Dr. Claudiu A. Stan, Dr. Phillip W. Snyder, Dr. Rebecca Cademartiri, Danny Zhu, Dr. Igor S. Aranson, Prof. Eugene I. Shakhnovich and Prof. George M. Whitesides

      Article first published online: 30 JUL 2014 | DOI: 10.1002/cplu.201402203

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      Different phases: A millimeter-scale granular model of coil-to-globule transitions: one “polymer” chain—a cylinders-on-a-string “pearl necklace”—and many spheres, all shaken on a horizontal surface, is described by using formalisms generally applied in statistical physics of polymers, namely, first- and second-order coil-to-globule transitions, to give insight into molecular behavior through granular experiments (see picture).

  31. Full Papers

    1. Lithium–Air Oxygen Shuttle Battery with a ZrO2-Based Ion-Conducting Oxide Electrolyte

      Dr. Atsushi Inoishi, Maki Matsuka, Prof. Takaaki Sakai, Dr. Young-Wan Ju, Prof. Shintaro Ida and Prof. Tatsumi Ishihara

      Article first published online: 28 JUL 2014 | DOI: 10.1002/cplu.201402041

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      Full of hot air! A lithium–air cell based on the concept of an “oxygen shuttle” in a calcium-stabilized ZrO2 (CSZ) electrolyte is described. The observed open-circuit voltage and discharge capacity are 1.81 V and 2179 mAh per gram of Li, respectively, at 1073 K (see picture). The observed overpotential in the anode is similar to that in a Mg–air cell reported previously, and much smaller than that of a H2–air fuel cell.

  32. Communications

    1. PEG600-Carboxylates as Efficient Reusable Reaction Media and Acylating Agents for the Resolution of sec-Alcohols

      Dr. Carlos M. Monteiro, Dr. Nuno M. T. Lourenço, Dr. Frederico C. Ferreira and Prof. Dr. Carlos A. M. Afonso

      Article first published online: 28 JUL 2014 | DOI: 10.1002/cplu.201402049

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      Simple and common: We describe a simple, attractive, and reusable methodology for one-pot resolution/separation of free sec-alcohols by the combination of sustainable acylating agents/solvents (polyethylene glycol derivatives) and a common biocatalyst (Candida antarctica lipase B) under irreversible conditions, and a separation process by extraction or distillation (see figure).

  33. Minireviews

    1. Next-Generation, High-Energy-Density Redox Flow Batteries

      Qizhao Huang and Dr. Qing Wang

      Article first published online: 25 JUL 2014 | DOI: 10.1002/cplu.201402099

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      Go with the flow: The latest advances in redox flow battery (RFB) related technologies are highlighted in the context of a few decades of development. The technology has mainly advanced through a process of enlarging the electrochemical window by using organic solvents and replacing liquid electrolytes with solid or semisolid materials (see picture).

    2. Implications of the Unpaired Spins in Li–O2 Battery Chemistry and Electrochemistry: A Minireview

      Dr. Kah Chun Lau, Dr. Jun Lu, Xiangyi Luo, Dr. Larry A. Curtiss and Dr. Khalil Amine

      Article first published online: 17 JUL 2014 | DOI: 10.1002/cplu.201402053

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      Battery design: An overview is given of unpaired electron spins related to the chemical species in a Li–O2 cell environment and their possible impact on the design and development of a practical Li–O2 cell. The discharge products consist of composite structures of Li/O2 compounds, such as Li2O2, O-rich Li2O2, LiO2-like superoxide, and Li2O (see figure).

  34. Full Papers

    1. Hierarchical Graphene-Rich Carbon Materials with Trace Nonprecious Metals for High-Performance Li–O2 Batteries

      Jing Li , Prof. Yining Zhang, Wei Zhou , Hongjiao Nie , Baoshan Wu and Prof. Huamin Zhang

      Article first published online: 1 JUL 2014 | DOI: 10.1002/cplu.201402044

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      Improving cathodes: Added transition-metal components, as assisting templates and graphitization catalysts, have a great effect on the pore optimization and graphene-rich structure formation in carbon frameworks (see figure). The obtained hierarchical carbon materials doped with trace metals exhibit enhanced discharge capacities, electrocatalytic activities, and stabilities for use in Li–O2 batteries.

    2. Characterization of Layered LiMO2 Oxides for the Oxygen Evolution Reaction of Metal–Air Batteries (M=Mn, Co, Ni)

      Dr. Veronica Augustyn and Prof. Arumugam Manthiram

      Article first published online: 11 JUN 2014 | DOI: 10.1002/cplu.201402107

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      Evolutionary behavior: The behavior of layered LiMO2 (M=Mn, Co, Ni) has been systematically characterized for the oxygen evolution reaction. Nickel-rich compositions exhibit the highest activities, whereas the substitution of manganese in LiM1−xMnxO2 (M=Co and Ni) decreases the activity (see figure). Electrochemical evidence suggests that the LiMO2 surface is transformed in situ into a highly active catalyst.

    3. Cyclic Performance Analysis of Hydrogen/Bromine Flow Batteries for Grid-Scale Energy Storage

      Dr. Kyu Taek Cho, Dr. Michael C. Tucker, Markus Ding, Paul Ridgway, Dr. Vincent S. Battaglia, Dr. Venkat Srinivasan and Dr. Adam Z. Weber

      Article first published online: 3 JUN 2014 | DOI: 10.1002/cplu.201402043

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      Reversible energy storage: Hydrogen/bromine flow batteries are analyzed in terms of their efficiency, self-discharge, side reactions, and anode Pt dissolution over a wide range of operating conditions. A single cell cycled more than 600 times shows good stability and an energy efficiency of around 75 % (see figure). The system shows promise for grid-scale energy storage.

    4. Impact of Proton Concentration on Equilibrium Potential and Polarization of Vanadium Flow Batteries

      Xiaoli Xi, Prof. Xianfeng Li, Chenhui Wang, Prof. Qinzhi Lai, Yuanhui Cheng, Wei Zhou, Cong Ding and Prof. Huamin Zhang

      Article first published online: 21 MAY 2014 | DOI: 10.1002/cplu.201402040

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      Maximizing potential: The impact of proton concentration in an electrolyte on the equilibrium potential and polarization of a vanadium flow battery (VFB) are investigated systematically with the aim of utilizing VFB electrolyte effectively. (see picture).

    5. Surfactant for Enhanced Rheological, Electrical, and Electrochemical Performance of Suspensions for Semisolid Redox Flow Batteries and Supercapacitors

      Lénaïc Madec, Mohamed Youssry, Manuella Cerbelaud, Patrick Soudan, Dominique Guyomard and Bernard Lestriez

      Article first published online: 20 MAY 2014 | DOI: 10.1002/cplu.201402042

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      Anolyte performance: A non-ionic surfactant is used to improve the rheological, electrical, and electrochemical properties of a suspension used as the anolyte for nonaqueous lithium-based redox flow batteries (see figure).

  35. Communications

    1. Reversibility of Lithium-Ion–Air Batteries Using Lithium Intercalation Compounds as Anodes

      Jinyoung Chun, Hyojin Kim, Changshin Jo, Eunho Lim, Prof. Jinwoo Lee and Prof. Youngsik Kim

      Article first published online: 6 MAY 2014 | DOI: 10.1002/cplu.201402035

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      Out of thin air: A lithium (ion)–air battery was designed, in which 0.1 M LiOH(aq) was used as the catholyte with oxygen from the air and lithium intercalation compounds such as graphite (C6) and Li4Ti5O12 (LTO) were used as the anodes (see figure). In this system, reversible utilization of Li harvested from the cathode was investigated.

    2. An Aqueous Lithium–Iodine Battery with Solid Polymer Electrolyte-Coated Metallic Lithium Anode

      Dr. Yu Zhao, Nadège Bonnet Mercier and Dr. Hye Ryung Byon

      Article first published online: 15 APR 2014 | DOI: 10.1002/cplu.201402038

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      On solid ground: Aqueous lithium–iodine (Li–I2) cells with solid polymer electrolyte-passivated metallic lithium have been demonstrated (see figure). The solid-state polymer electrolyte protects the metallic Li and the aqueous Li–I2 cells deliver a capacity of approximately 190 mA h g−1 with ideal Coulombic efficiency and a discharge potential of 3.4 V versus Li+/Li.

  36. Full Papers

    1. Simulation Analysis of Regional Temperature Effects and Battery Management Schedules for a Residential-Scale Vanadium Redox Flow Battery System

      Dr. Ao Tang and Prof. Maria Skyllas-Kazacos

      Article first published online: 11 APR 2014 | DOI: 10.1002/cplu.201400034

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      Battery management: For all-vanadium redox flow batteries (see figure), prevention of vanadium-component precipitation and restoration of capacity loss are two critical concerns. Dynamic modelling and simulation analysis were thus performed to explore electrolyte temperature variations associated with different regional temperature effects and provide deeper insights into scheduling necessary battery operation management.

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