Chemistry – An Asian Journal

Cover image for Vol. 8 Issue 1

January 2013

Volume 8, Issue 1

Pages 1–295

  1. Cover Pictures

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Cover Picture: Biorecognition on Graphene: Physical, Covalent, and Affinity Immobilization Methods Exhibiting Dramatic Differences (Chem. Asian J. 1/2013) (page 1)

      Adeline Huiling Loo, Dr. Alessandra Bonanni and Prof. Martin Pumera

      Version of Record online: 20 DEC 2012 | DOI: 10.1002/asia.201290051

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      The preparation of biorecognition layers on the surface of a sensing platform is a very crucial step for the development of sensitive and selective biosensors. In their Full Paper on page 198 ff., Martin Pumera et al. compare the performance of three thrombin aptasensors using either physical, covalent, or affinity immobilization on graphene oxide surfaces. The graphene oxide layers are symbolized by the colorful sand deposits of the Antelope Canyon (Arizona, USA) at which an aptamer (pink) is immobilized and interacts with thrombin (blue).

    2. You have free access to this content
      Inside Cover: Enhanced Performance of Quasi-Solid-State Dye-Sensitized Solar Cells by Branching the Linear Substituent in Sensitizers Based on Thieno[3,4-c]pyrrole-4,6-dione (Chem. Asian J. 1/2013) (page 2)

      Quanyou Feng, Weiyi Zhang, Prof. Dr. Gang Zhou and Prof. Dr. Zhong-Sheng Wang

      Version of Record online: 20 DEC 2012 | DOI: 10.1002/asia.201290053

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      Dye-sensitized solar cells are regarded as a candidate for renewable energy source owing to their low cost, abundance of raw materials, ease of fabrication, and low energy consumption in the production process. In their Full Paper on page 168 ff., Gang Zhou, Zhong-Sheng Wang et al. introduced an ethyl group into a sensitizer with a linear hexyl group. With this branched 2-ethylhexyl group, the corresponding quasi-solid-state DSSC displayed a significantly reduced charge recombination rate, a longer electron lifetime, a higher photovoltage, and consequently an improved power conversion efficiency.

  2. Editorial

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    1. You have free access to this content
      All in the Family (pages 4–6)

      Dr. Theresa Kueckmann

      Version of Record online: 20 DEC 2012 | DOI: 10.1002/asia.201201054

  3. Graphical Abstract

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
  4. News

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
  5. Focus Reviews

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    1. Photocatalysis

      The Development of Better Photocatalysts through Composition- and Structure-Engineering (pages 26–40)

      Dr. Dieqing Zhang, Prof. Dr. Guisheng Li, Prof. Dr. Hexing Li and Prof. Dr. Yunfeng Lu

      Version of Record online: 7 AUG 2012 | DOI: 10.1002/asia.201200123

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      Better together: A cleaner world may be built through the development of improved photocatalysts that are powered by solar irradiation. Realizing this goal requires the design and synthesis of photocatalysts with precise control of their composition and structure over multiple length scales.

    2. Cycloaddition

      N-Alkylsulfonylimines as Dipolarophiles in Cycloaddition Reactions (pages 42–48)

      Louise A. Stubbing, Dr. G. Paul Savage and Prof. Margaret A. Brimble

      Version of Record online: 4 SEP 2012 | DOI: 10.1002/asia.201200584

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      Step by step: First described in the late 1960s, N-alkylsulfonylimines (1) are heterocumulenes that participate in reactions with a range of 1,3-dipoles to afford interesting 3-, 4-, 5-, and 6-membered heterocycles. This review provides a full report of the cycloaddition reactions of 1 with alkenes, enamines, ynamines, diazocompounds, azirines, silyloxydienes, and azadienes. The distribution of adducts obtained suggests that multistage, stepwise mechanistic pathways rather than a concerted process are in operation.

  6. Communications

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    1. Hydroboration

      Straightforward Iron-Catalyzed Synthesis of Vinylboronates by the Hydroboration of Alkynes (pages 50–54)

      Michael Haberberger and Dr. Stephan Enthaler

      Version of Record online: 12 NOV 2012 | DOI: 10.1002/asia.201200931

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      An iron-catalyzed hydroboration of alkynes to produce vinylboronates has been examined. With a straightforward system composed of iron carbonyls and pinacolborane, good to excellent yields and chemoselectivities were achieved for a variety of alkynes.

    2. Phthalocyanines

      Mono-PEGylated Zinc(II) Phthalocyanines: Preparation, Nanoparticle Formation, and In Vitro Photodynamic Activity (pages 55–59)

      Dr. Baozhong Zhao, Prof. Wubiao Duan, Prof. Pui-Chi Lo, Lei Duan, Prof. Chi Wu and Prof. Dennis K. P. Ng

      Version of Record online: 9 NOV 2012 | DOI: 10.1002/asia.201200897

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      PEGged! A series of mono-PEGylated zinc(II) phthalocyanines for photodynamic therapy with singlet oxygen have been prepared and formulated in aqueous media with different methods. The system based on silica nanoparticles exhibits remarkably high stability and in vitro photocytotoxicity.

    3. Heteroacenes

      Solution-Processed Optoelectronic Properties of Functionalized Anthradifuran (pages 60–64)

      Dr. Motonori Watanabe, Wei-Teing Su, Prof. Dr. Yuan Jay Chang, Dr. Ting-Han Chao, Dr. Yuh-Sheng Wen and Prof. Dr. Tahsin J. Chow

      Version of Record online: 30 OCT 2012 | DOI: 10.1002/asia.201200834

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      Layering up: The synthesis, physical properties, crystal structures, and optoelectronic properties of trialkylsilylethynylanthradifuran derivatives have been reported. Their high solubility enabled them to be processed through a solution phase for the fabrication of organic field-effect transistors (OFETs) and photovoltaic devices.

    4. Synthetic Methods

      Reverse Regioselectivity in the Palladium(II) Thiourea Catalyzed Intermolecular Pauson–Khand Reaction (pages 65–68)

      Na Wu, Lujiang Deng, Lianzhu Liu, Qi Liu, Prof. Chuangchuang Li and Prof. Zhen Yang

      Version of Record online: 19 OCT 2012 | DOI: 10.1002/asia.201200783

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      Which way? Palladium thiourea catalyzed Pauson–Khand reaction of norbornene with substituted alkynoates to afford selectively either α-carboxylated adducts or β-carboxylated adducts with the reverse regioselectivity has been demonstrated for the first time. Control of the regioselectivity in this transformation is governed by the addition of LiCl. A mechanistic interpretation to account for this observed regioselectivity is presented.

    5. Metal-Organic Frameworks

      Synthesis and Self-Assembly of Monodispersed Metal-Organic Framework Microcrystals (pages 69–72)

      Dr. Guang Lu, Chenlong Cui, Weina Zhang, Yayuan Liu and Prof. Fengwei Huo

      Version of Record online: 12 OCT 2012 | DOI: 10.1002/asia.201200754

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      How to make super latt(ic)e: Monodispersed octahedral microcrystals of a zirconium-carboxylate metal-organic framework (MOF), UiO-66, were synthesized, under optimized experimental conditions, by using acetic acid as a modulator. Due to their uniform size and shape, the obtained MOF microcrystals can be assembled not only into large-area two-dimensional (2D) monolayers with oriented facets through a liquid-air interfacial assembly technique, but also into long-range three-dimensional (3D) superlattices by sedimentation.

    6. Nanoparticles

      Preparation of Sub-10 nm AgI Nanoparticles and a Study on their Phase Transition Temperature (pages 73–75)

      Shuhei Yamasaki, Dr. Teppei Yamada, Dr. Hirokazu Kobayashi and Prof. Hiroshi Kitagawa

      Version of Record online: 25 OCT 2012 | DOI: 10.1002/asia.201200790

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      When size matters! Silver iodide nanoparticles (AgI NPs) with a mean diameter of 6.3±4.2 nm were synthesized using potassium iodide. The α phase of the AgI NPs was stable up to 37 °C, as determined by differential scanning calorimetry, which is in good agreement with variable temperature XRD measurements.

    7. Supramolecular Polymer

      A Green Copper-Based Metallo-Supramolecular Polymer: Synthesis, Structure, and Electrochromic Properties (pages 76–79)

      Dr.  Md. Delwar Hossain, Dr. Takashi Sato and Dr. Masayoshi Higuchi

      Version of Record online: 5 OCT 2012 | DOI: 10.1002/asia.201200668

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      Stepwise complexation: A green copper-based metallo-supramolecular polymer was successfully synthesized through complexation of CuII ions with new bis(1,10-phenanthroline) ligands. The obtained polymer showed an excellent electrochromic color change from green to colorless upon electrochemical reduction of CuII to CuI.

    8. Diastereoselective Synthesis

      Preparation of Chiral α-Substituted Alaninates through an Efficient Diastereoselective Synthesis of Trisubstituted Allylic Alcohols (pages 80–83)

      Balraj Gopula, Prof. Dr. Way-Zen Lee and Prof. Dr. Hsyueh-Liang Wu

      Version of Record online: 6 NOV 2012 | DOI: 10.1002/asia.201200859

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      Tri without fail: The highly diastereoselective addition of vinylaluminum reagents, generated in situ from the zirconium-catalyzed carboalumination of various alkynes and Me3Al, to the easily accessible (2S,5R,6R)-5,6-dimethyl-[1,4]dioxane-2-carbaldehyde (1 b) afforded the corresponding trisubstituted allylic alcohols, and a subsequent Overman reaction yielded allylic amines that contain chiral quaternary carbon stereocenters.

    9. Host–Guest Systems

      Molecular Recognition of Zwitterions: Enhanced Binding and Selective Recognition of Miltefosine by a Squaramide-Based Host (pages 84–87)

      Carlos López, Elena Sanna, Lucas Carreras, Manel Vega, Prof. Carmen Rotger and Prof. Antoni Costa

      Version of Record online: 5 NOV 2012 | DOI: 10.1002/asia.201200881

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      The importance of a synergic combination between electrostatic and hydrogen-bonding interactions has been demonstrated. A self-complementary amidosquarate-squaramide host for miltefosine has been disclosed. In DMSO, this rather structurally simple host exhibits high affinity and enhanced selectivity for miltefosine owing to the goal-keeping effect of the amidosquarate unit.

  7. Full Papers

    1. Top of page
    2. Cover Pictures
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    1. Nanostructures

      Fructose 1,6-Bisphosphate Trisodium Salt as A New Phosphorus Source for the Rapid Microwave Synthesis of Porous Calcium–Phosphate Microspheres and their Application in Drug Delivery (pages 88–94)

      Chao Qi, Prof. Dr. Ying-Jie Zhu and Feng Chen

      Version of Record online: 28 NOV 2012 | DOI: 10.1002/asia.201200901

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      Salty and sweet: Amorphous calcium–phosphate nanostructures were synthesized from fructose 1,6-bisphosphate trisodium salt as an organic phosphorus source in a microwave-assisted reaction. These structures showed good drug-loading/-release behavior.

    2. Metal–Organic Frameworks

      Luminescence Tuning and White-Light Emission of Co-doped Ln–Cd–Organic Frameworks (pages 95–100)

      Ayjamal Ablet, Shu-Mu Li, Wei Cao, Dr. Xiang-Jun Zheng, Prof. Wing-Tak Wong and Prof. Lin-Pei Jin

      Version of Record online: 18 OCT 2012 | DOI: 10.1002/asia.201200813

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      A ligand that displays intense blue luminescence was selected to construct four new Ln–Cd metal–organic frameworks (MOFs). Tunable luminescence was successfully achieved by co-doping different ratios of Eu3+ and Tb3+ ions in the Gd–Cd or Pr–Cd MOFs. The relative emission intensity of white light for Gd–Cd:Eu3+,Tb3+ MOFs is stronger than that of Pr–Cd:Eu3+,Tb3+ MOFs.

    3. Fluorescence Sensors

      Alternative Copolymerization of a Conjugated Segment and a Flexible Segment and Fabrication of a Fluorescent Sensing Film for HCl in the Vapor Phase (pages 101–107)

      Hongyue Wang, Hong Cui, Xinglei Liu, Lanlan Li, Yuan Cao, Dr. Taihong Liu and Prof. Dr. Yu Fang

      Version of Record online: 10 OCT 2012 | DOI: 10.1002/asia.201200561

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      HCl-bent: A novel fluorescent oligomer has been designed and prepared by alternative co-polymerization of oligo(p-phenyleneethynylene) possessing two cholesterol-containing side chains, and ethanediamine. The fluorescence emission of a film fabricated from the oligomer is very sensitive and selective to the presence of trace amounts of HCl in air.

    4. Polymers

      Local Extraction and Condensation under a Microscope Using the Optically Controlled Phase Separation of a Thermoresponsive Polymer (pages 108–112)

      Hayato Inoue, Takayuki Yamamoto, Dr. Shota Kuwahara and Prof. Dr. Kenji Katayama

      Version of Record online: 22 OCT 2012 | DOI: 10.1002/asia.201200591

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      Local heat advisory: In-situ extraction/condensation of various dyes was carried out in a local phase-separation region of a thermoresponsive polymer aqueous solution, which was induced through heating by an NIR laser under a microscope. A necessary condition for extraction/condensation is the hydrophobicity of the dye, and the main reason for the condensation is the molecular interaction between the side chain of the polymer and the functional group of the dyes.

    5. Organogels

      A Synthetic Amino Acid Residue Containing A New Oligopeptide-Based Photosensitive Fluorescent Organogel (pages 113–120)

      Dibakar Kumar Maiti and Prof. Arindam Banerjee

      Version of Record online: 19 OCT 2012 | DOI: 10.1002/asia.201200617

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      Light switch: A photoresponsive fluorescent peptide-based gelator molecule with a stilbene-containing amino acid residue has been discovered. A transcis isomerization of the stilbene portion of the gelator molecule is responsible for the gel–sol transition triggered by UV irradiation (see figure).

    6. Fullerenes

      1-Aryl-4-Silylmethyl[60]fullerenes: Synthesis, Properties, and Photovoltaic Performance (pages 121–128)

      Prof. Dr. Yutaka Matsuo, Hiromi Oyama, Dr. Iwao Soga, Dr. Toshihiro Okamoto, Dr. Hideyuki Tanaka, Dr. Akinori Saeki, Prof. Dr. Shu Seki and Prof. Dr. Eiichi Nakamura

      Version of Record online: 28 SEP 2012 | DOI: 10.1002/asia.201200726

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      pin-ball wizard: Electron-accepting 1-aryl-4-silylmethyl[60]fullerenes were synthesized for organic photovoltaic devices. Their synthesis, electrochemical properties, X-ray structures, photoconductivity, electron mobility, and photovoltaic performance are reported. The most efficient device exhibited a power-conversion efficiency of 3.4 % (short-circuit current density: 8.1 mA cm−2, open-circuit voltage: 0.69 V, fill factor: 0.59).

    7. Oligomers

      Self-Assembly of Aniline Oligomers (pages 129–137)

      Yanchai Zhao, Dr. Elena Tomšík, Prof. Jixiao Wang, Zuzana Morávková, Dr. Alexander Zhigunov, Dr. Jaroslav Stejskal and Prof. Dr. Miroslava Trchová

      Version of Record online: 8 NOV 2012 | DOI: 10.1002/asia.201200836

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      Mystery of flower growth explained: Flower-like hierarchical architectures assembled from aniline oligomers by a template-free method are reported. Their formation process is ascribed to the directional growth of oligoanilines through non-covalent interactions, such as hydrogen bonding, hydrophobic forces, and π–π stacking.

    8. Mixed-Valent Compounds

      Asymmetric Mixed-Valence Complexes that Consist of Cyclometalated Ruthenium and Ferrocene: Synthesis, Characterization, and Electronic-Coupling Studies (pages 138–147)

      Si-Hai Wu, Jun-Jian Shen, Prof. Jiannian Yao and Prof. Dr. Yu-Wu Zhong

      Version of Record online: 30 OCT 2012 | DOI: 10.1002/asia.201200900

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      Penny mix: Three bis-tridentate ferrocene-containing cyclometalated ruthenium complexes have been prepared and characterized, in which the ferrocene units are either substituted on the NNN ligand, on the NCN ligand, or on both sides. A combined experimental and computational study has shown that the electronic coupling between the iron and ruthenium sites is strongly dependent on the connection mode between the two redox-active centers.

    9. Energetic Materials

      A Study of Cyanotetrazole Oxides and Derivatives thereof (pages 148–159)

      Franziska Boneberg, Angie Kirchner, Prof. Dr. Thomas M. Klapötke, Davin G. Piercey, Maximilian J. Poller and Jörg Stierstorfer

      Version of Record online: 21 NOV 2012 | DOI: 10.1002/asia.201200903

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      Instant energy boosters: The syntheses of energetic salts of cyanotetrazolate-1- and -2-oxides and their ability to form tetrazole-carboxamides, dihydrotetrazines, and tetrazines are reported. These compounds may provide base materials or synthetic strategies to new energetic materials.

    10. Mesoporous Materials

      General Information to Obtain Spherical Particles with Ordered Mesoporous Structures (pages 160–167)

      Dr. Tatsuo Kimura and Dr. Yusuke Yamauchi

      Version of Record online: 19 OCT 2012 | DOI: 10.1002/asia.201200649

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      Holey order: Aerosol-assisted synthesis of aluminum organophosphonate (AOP) and aluminophosphate (AlPO) materials with uniform mesopores was characterized by using the difference in relative density of soluble oligomers that interact with ethylene oxide units in EOnPOmEOn triblock copolymer. The result gave general information for morphological control of surfactant-assisted synthesis of mesoporous materials. In particular, the role of temperature was found to be very important.

    11. Dye-Sensitized Solar Cells

      Enhanced Performance of Quasi-Solid-State Dye-Sensitized Solar Cells by Branching the Linear Substituent in Sensitizers Based on Thieno[3,4-c]pyrrole-4,6-dione (pages 168–177)

      Quanyou Feng, Weiyi Zhang, Prof. Dr. Gang Zhou and Prof. Dr. Zhong-Sheng Wang

      Version of Record online: 18 OCT 2012 | DOI: 10.1002/asia.201200720

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      Branching out: Novel organic sensitizers were synthesized by incorporating a branched substituent in dyes based on thieno[3,4-c]pyrrole-4,6-dione. The novel dyes led to improvements in the photovoltaic performance of quasi-solid-state dye-sensitized solar cells.

    12. Polycyclic Aromatic Hydrocarbons

      Functionalization of Hexa-peri-hexabenzocoronenes: Investigation of the Substituent Effects on a Superbenzene (pages 178–190)

      Ryuichi Yamaguchi, Satoru Ito, Byung Sun Lee, Dr. Satoru Hiroto, Prof. Dr. Dongho Kim and Prof. Dr. Hiroshi Shinokubo

      Version of Record online: 24 OCT 2012 | DOI: 10.1002/asia.201200723

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      The synthesis of ortho-, meta-, and para-substituted HBCs with various functional groups was accomplished through a direct C[BOND]H borylation strategy. We have elucidated that the substituents significantly influenced the photophysical properties of HBCs. DFT calculations revealed that the substituents cause changes in the molecular orbitals, thereby resulting in an increase in the transition probability from the S0[RIGHTWARDS ARROW]S1 states.

    13. Electrochemical Sensing

      Facile Assembly of Graphene on Anion Exchange Resin Microspheres for Electrochemical Sensing and Biosensing (pages 191–197)

      Shijun Sheng, Dr. Shuang Liu, Dr. Luyan Zhang and Prof. Gang Chen

      Version of Record online: 25 OCT 2012 | DOI: 10.1002/asia.201200745

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      Ace in the hole: Graphene sheets were assembled on anion exchange resin (AER) microspheres based on the electrostatic interactions between graphene oxide and AER and subsequent chemical reduction. The prepared graphene-coated AER microspheres were then embedded in the bores of pipette tips to fabricate disposable electrodes and biosensors for sensing of biologically active substances.

    14. Biosensors

      Biorecognition on Graphene: Physical, Covalent, and Affinity Immobilization Methods Exhibiting Dramatic Differences (pages 198–203)

      Adeline Huiling Loo, Dr. Alessandra Bonanni and Prof. Martin Pumera

      Version of Record online: 22 OCT 2012 | DOI: 10.1002/asia.201200756

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      Preparation is half the battle: The performance of three aptasensors, prepared by either physical, covalent, or affinity immobilization on graphene-modified DEP electrodes, for the detection of thrombin (THR) was compared. It was found that the former two immobilization methods result in higher selectivity as compared to affinity immobilization, while all three methods of immobilization show a similar optimum amount of immobilized aptamer.

    15. Nanoparticles

      A Facile One-Pot Synthesis of Layered Protonated Titanate Nanosheets Loaded with Silver Nanoparticles with Enhanced Visible-Light Photocatalytic Performance (pages 204–211)

      Yuanpeng Gao, Prof. Pengfei Fang, Zhi Liu, Feitai Chen, Yang Liu, Prof. Dahai Wang and Prof. Yiqun Dai

      Version of Record online: 13 NOV 2012 | DOI: 10.1002/asia.201200768

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      You make me shine! A novel one-pot approach for preparing layered protonated titanate nanosheets (LPTNs) loaded with highly dispersed silver nanoparticles is proposed. Silver particles act as the electron pumps to transport electrons into the conduction band of the LPTNs to enhance the visible-light photocatalytic activity.

    16. Frustrated Lewis Pairs

      Reaction of an “Invisible” Frustrated N/B Lewis Pair with Dihydrogen (pages 212–217)

      Sina Schwendemann, Shunsuke Oishi, Prof. Dr. Susumu Saito, Dr. Roland Fröhlich, Dr. Gerald Kehr and Prof. Dr. Gerhard Erker

      Version of Record online: 25 OCT 2012 | DOI: 10.1002/asia.201200776

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      I′m frustrated—why do I seem so invisible to you: Piers' borane [HB(C6F5)2] forms a Lewis acid/Lewis base adduct B with the enamine A. This reacts with dihydrogen via the “invisible” frustrated N/B Lewis pair C, probably formed by means of hydroboration under equilibrium conditions, to yield the zwitterionic ammonium/hydrido-borate product D.

    17. Photocatalysts

      Synthesis and Photocatalytic Activity of Poly(triazine imide) (pages 218–224)

      Yeilin Ham, Dr. Kazuhiko Maeda, Dr. Dongkyu Cha, Dr. Kazuhiro Takanabe and Prof. Dr. Kazunari Domen

      Version of Record online: 22 OCT 2012 | DOI: 10.1002/asia.201200781

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      One ring does the job: Poly(triazine imide) was synthesized with incorporation of Li+ and Cl ions. When a dicyanodiamide precursor was used in the presence of LiCl, this less stable framework was formed instead of carbon nitride based on the tri-s-triazine unit. This new photocatalyst evolved hydrogen or oxygen from water containing proper sacrificial reagents under light irradiation.

    18. Carbon Nanomaterials

      Facile Synthesis of High-Quality Plasma-Reduced Graphene Oxide with Ultrahigh 4,4′-Dichlorobiphenyl Adsorption Capacity (pages 225–231)

      Dr. Qi Wang, Dr. Jiaxing Li, Dr. Ye Song and Prof. Xiangke Wang

      Version of Record online: 22 OCT 2012 | DOI: 10.1002/asia.201200782

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      Ultra adsorbent: A novel H2 plasma approach to prepare high-quality reduced graphene (denoted as PG) and its use as adsorbent to remove 4,4′-dichlorobiphenyl (4,4′-DCB) from aqueous solutions is reported.

    19. Carbon Nanotubes

      Insight into the Origin of the Positive Effects of Imidazolium Salt on Electrocatalytic Activity: Ionic Carbon Nanotubes as Metal-Free Electrocatalysts for Oxygen Reduction Reaction (pages 232–237)

      Youn Soo Kim, Ju Yeon Shin, Hyun Ji Jeon, Areum Cha, Prof. Dr. Chongmok Lee and Prof. Dr. Sang-gi Lee

      Version of Record online: 5 NOV 2012 | DOI: 10.1002/asia.201200800

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      Zwitterionic CNTs functionalized with poly(imidazolium sulfonate) showed a remarkable metal-free electrocatalytic activity in the oxygen reduction reaction. The electrocatalytic activity can be attributed to the induced polarization of π-electrons of CNTs, thus accelerating interfacial electron transfer.

    20. Conjugated Polymers

      Synthesis, Crystal Structure, and Physical Property of Sterically Unprotected Thiophene/Phenylene Co-Oligomer Radical Cations: A Conductive ππ Bonded Supermolecular meso-Helix (pages 238–243)

      Xiaoyu Chen, Binbin Ma, Shuang Chen, Prof. Yizhi Li, Prof. Wei Huang, Prof. Jing Ma and Prof. Xinping Wang

      Version of Record online: 6 NOV 2012 | DOI: 10.1002/asia.201200819

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      No face-to-face interaction: Sterically unprotected thiophene/phenylene co-oligomer radical cation salts BPnT.+[Al(ORF)4] (ORF=OC(CF3)3, n=1–3) have been successfully synthesized. Their conductivity increases with chain length. The formed meso-helical stacking by cross-overlapping radical cations of BP2T.+ is distinct from previously reported face-to-face overlaps of sterically protected (co-)oligomer radical cations.

    21. Cycloaddition

      Intramolecular 1,3-Dipolar Cycloaddition-Mediated Stereoselective Synthesis of Disubstituted Cyclopentane: A Simple Model for the Cyclopentane Ring System of Polycyclic Oroidine Alkaloids (pages 244–250)

      Yusuke Fukahori, Yohei Takayama, Takuya Imaoka, Dr. Osamu Iwamoto and Prof. Dr. Kazuo Nagasawa

      Version of Record online: 18 OCT 2012 | DOI: 10.1002/asia.201200820

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      The mask of Oro: The disubstituted cyclopentane ring framework which is found in oroidine alkaloids such as axinellamine A was synthesized. The contiguous stereogenic centers at C11 and C16 involving a nitrogen-containing quaternary carbon center were constructed by intramolecular 1,3-dipolar cycloaddition.

    22. Zintl Phases

      A10LaCdSb9 (A=Ca, Yb): A Highly Complex Zintl System and the Thermoelectric Properties (pages 251–257)

      Jian Wang, Prof. Dr. Sheng-Qing Xia and Prof. Dr. Xu-Tang Tao

      Version of Record online: 19 OCT 2012 | DOI: 10.1002/asia.201200827

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      New lanthanum-doped complex Zintl phases, Ca10LaCdSb9 and Yb10LaCdSb9, have been designed and synthesized by using Zintl concepts. Their polyanion structures can be viewed as a random mixture between the [ASb6] octahedra and the [Cd2Sb6] dimerized tetrahedra, which results in extremely low lattice thermal conductivity.

    23. Photocatalysis

      Controlled Synthesis of BiOCl Hierarchical Self-Assemblies with Highly Efficient Photocatalytic Properties (pages 258–268)

      Dr. Shengjie Peng, Linlin Li, Peining Zhu, Yongzhi Wu, Prof. Madhavi Srinivasan, Prof. Subodh G. Mhaisalkar, Prof. Seeram Ramakrishna and Prof. Qingyu Yan

      Version of Record online: 14 NOV 2012 | DOI: 10.1002/asia.201200856

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      I believe in BiOCles: Microsphere-, microflower-, and microdisk-like BiOCl hierarchical self-assemblies were fabricated and showed superior photocatalytic properties.

    24. Metallacycles

      From Osmium Hydrido Vinylidene to Osmacycles: The Key Role of Osmabutadiene Intermediates (pages 269–275)

      Qianyi Zhao, Dr. Xiao-Yu Cao, Prof. Dr. Ting Bin Wen and Prof. Dr. Haiping Xia

      Version of Record online: 7 NOV 2012 | DOI: 10.1002/asia.201200872

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      Wizard of Os: Complex 1 reacts with activated alkynes to give different osmacycles via a common osmabutadiene intermediate that diversifies the cyclization processes. When R1 is non-coordinating or weakly coordinating, formal [3+3] cycloaddition gives isoosmabenzenes and an osmabenzyne; when R1 is a coordinating group, coordination and cyclization is preferred.

    25. Biosensors

      Real-Time Fluorescence Turn-On Detection of Alkaline Phosphatase Activity with a Novel Perylene Probe (pages 276–281)

      Jian Chen, Huping Jiao, Wenying Li, Dongli Liao, Dr. Huipeng Zhou and Prof. Dr. Cong Yu

      Version of Record online: 9 NOV 2012 | DOI: 10.1002/asia.201200880

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      A desired breakdown: A novel tetracationic perylene probe (probe 1) was designed and synthesized. Probe 1 was used for the real-time fluorescence turn-on assay of alkaline phosphatase (ALP) activity and inhibitor screening. ALP triggered the degradation of ATP, the breakdown of the ATP/probe 1 complex, and the recovery of the probe 1 monomer fluorescence.

    26. Photocatalysis

      Enhancing the Photocatalytic Activity of Anatase TiO2 by Improving the Specific Facet-Induced Spontaneous Separation of Photogenerated Electrons and Holes (pages 282–289)

      Chang Liu, Dr. Xiguang Han, Shuifen Xie, Prof. Qin Kuang, Xue Wang, Dr. Mingshang Jin, Prof. Zhaoxiong Xie and Prof. Lansun Zheng

      Version of Record online: 9 NOV 2012 | DOI: 10.1002/asia.201200886

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      Trial separation: Selectively depositing Pt nanoparticles on the {101} facets is effective in enhancing the photocatalytic activity of anatase TiO2 nanocrystals by improving the spontaneous separation efficiency of photogenerated electrons and holes (see figure). An optimal ratio of the oxidative {001} facets to the reductive {101} facets exists with regard to the photocatalytic activities.

    27. Imaging Agents

      Ultra-small, Uniform, and Single bcc-Phased FexCo1-x/Graphitic Shell Nanocrystals for T1 Magnetic Resonance Imaging Contrast Agents (pages 290–295)

      In Ae Choi, Yan Li, Da Jeong Kim, Dr. Mou Pal, Jee-Hyun Cho, Kyujoon Lee, Prof. Myung-Hwa Jung, Dr. Chulhyun Lee and Prof. Won Seok Seo

      Version of Record online: 14 NOV 2012 | DOI: 10.1002/asia.201200950

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      FexCo1-x/GC nanocrystals as MRI agents: Ultra-small, uniform, and single bcc-phased FexCo1-x/graphitic shell nanocrystals with average diameters of <4 nm are reported for the first time. The composition of the nanocrystals can be tuned by changing the Fe/Co ratio of the metal precursors. The single bcc-phased FexCo1-x/GC nanocrystals functionalized with phospholipid–poly(ethylene glycol) in solution are demonstrated to be excellent T1 MRI contrast agents.

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