ChemPlusChem

Cover image for Vol. 78 Issue 10

October 2013

Volume 78, Issue 10

Pages 1209–1310

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Cover Picture: Functionalized Porphyrins as Red Fluorescent Probes for Metal Cations: Spectroscopic, MALDI-TOF Spectrometry, and Doped-Polymer Studies (ChemPlusChem 10/2013) (page 1209)

      Dr. Nuno M. M. Moura, Dr. Cristina Nuñez, Dr. Sérgio M. Santos, Prof. M. Amparo F. Faustino, Prof. José A. S. Cavaleiro, Prof. M. Graça P. M. S. Neves, Prof. José Luis Capelo and Prof. Carlos Lodeiro

      Article first published online: 19 AUG 2013 | DOI: 10.1002/cplu.201300286

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      The cover picture shows the ability of benzoporphyrin derivatives to emit in the red zone of the UV/Vis spectrum when excited with green light; represented by the lighthouses of Barra (Aveiro) and Cabo Espichel (Lisbon) in Portugal. These lighthouses are also symbolic of the cooperation between the two research groups. The studied functionalized porphyrins showed a remarkable emission enhancement and sensing ability for Hg2+ metal ions. The binding with Hg2+ induced strong changes in the ground state allowing the application of these compounds as chromogenic and fluorogenic metal-ion sensors. Gas-phase studies using MALDI-TOF-MS analysis confirmed their sensing ability. Further details can be found in the Full Paper by M. G. P. M. S. Neves, C. Lodeiro, and co-workers on page 1230 ff.

  2. Cover Profile

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Functionalized Porphyrins as Red Fluorescent Probes for Metal Cations: Spectroscopic, MALDI-TOF Spectrometry, and Doped-Polymer Studies (page 1210)

      Dr. Nuno M. M. Moura, Dr. Cristina Núñez, Dr. Sérgio M. Santos, Prof. M. Amparo F. Faustino, Prof. José A. S. Cavaleiro, Prof. M. Graça P. M. S. Neves, Prof. José Luis Capelo and Prof. Carlos Lodeiro

      Article first published online: 27 AUG 2013 | DOI: 10.1002/cplu.201300283

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      The need to develop new, efficient, and selective chemosensors for monitoring metal ions is important because of the increasing amount of metal-based pollutants in the environment.” This and more about the story behind the cover in the Cover Profile on page 1210 can be found on page 1230.

  3. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
    1. Graphical Abstract: ChemPlusChem 10/2013 (pages 1211–1216)

      Article first published online: 10 OCT 2013 | DOI: 10.1002/cplu.201390039

  4. Masthead

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
    1. Masthead: ChemPlusChem 10/2013 (page 1217)

      Article first published online: 10 OCT 2013 | DOI: 10.1002/cplu.201390040

  5. News

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
  6. Communications

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
    1. Synthesis of Zeolitic Imidazolate Framework-7 in a Water/Ethanol Mixture and Its Ethanol-Induced Reversible Phase Transition (pages 1222–1225)

      Dr. Ming He, Dr. Jianfeng Yao, Lunxi Li, Dr. Kun Wang, Fanyan Chen and Prof. Huanting Wang

      Article first published online: 11 JUL 2013 | DOI: 10.1002/cplu.201300193

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      Room to breathe: An efficient method for the synthesis of zeolitic imidazolate framework-7 (ZIF-7) in ethanol/water at room temperature is reported. The ZIF-7 undergoes a reverse-phase transition from large pore (lp)-phase to narrow pore (np)-phase under heat treatment and from np-phase back to lp-phase in ethanol solution.

    2. 0D to 1D Switching of Hybrid Polyoxometalate Assemblies at the Nanoscale by Using Molecular Control (pages 1226–1229)

      Wei Chen, Dui Ma, Jun Yan, Thomas Boyd, Prof. Leroy Cronin, Dr. De-Liang Long and Prof. Yu-Fei Song

      Article first published online: 5 AUG 2013 | DOI: 10.1002/cplu.201300244

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      Watered down: Polyoxometalate (POM) hybrids based on [C16H36N]4[SiW11O40(SiCH2[BOND]CH2CH2NH2HCl)2] covalently functionalized with different lengths of alkyl chains (n=0, 5, or 10) terminated with azobenzene moieties have been successfully prepared (see picture). The assembly behavior of these POMs can be affected by hydrophobic and π–π interactions by finely tuning the lengths of the alkyl chains in different ratios of CH3CN/H2O.

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
    8. Full Papers
    1. Functionalized Porphyrins as Red Fluorescent Probes for Metal Cations: Spectroscopic, MALDI-TOF Spectrometry, and Doped-Polymer Studies (pages 1230–1243)

      Dr. Nuno M. M. Moura, Dr. Cristina Nuñez, Dr. Sérgio M. Santos, Prof. M. Amparo F. Faustino, Prof. José A. S. Cavaleiro, Prof. M. Graça P. M. S. Neves, Prof. José Luis Capelo and Prof. Carlos Lodeiro

      Article first published online: 19 AUG 2013 | DOI: 10.1002/cplu.201300216

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      Glowing report: Benzoporphyrins and porphyrins have been explored as fluorescent probes towards different metal ions. Probe 1 displays a high sensitivity for and selectivity response to Hg2+ with a remarkable fluorescence intensity enhancement. These compounds show sensorial ability in the gas phase and solid state, and when 1 is immobilized in polymethylmethacrylate it is able to discriminate between Zn2+ and Hg2+.

    2. Ultrafast Dynamics of meso-Tetraphenylmetalloporphyrins: The Role of Dark States (pages 1244–1251)

      Dr. Yu Liang, Maximilian Bradler, Dr. Melanie Klinger, Dr. Oliver Schalk, Mihaela Carmen Balaban, Prof. Dr. Teodor Silviu Balaban, Prof. Dr. Eberhard Riedle and Dr. Andreas-Neil Unterreiner

      Article first published online: 5 JUL 2013 | DOI: 10.1002/cplu.201300143

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      Stab in the dark: By means of transient absorption studies, following Q- and Soret-band excitation, and ab initio calculations on meso-tetraphenylporphyrinato magnesium(II) (MgTPP) and meso-tetraphenylporphyrinato cadmium(II) (CdTPP), it is shown that electronic relaxation following Soret-band excitation of porphyrins with a heavy central atom is mediated by a hitherto disregarded dark state (see picture).

    3. Nitrogen-Doped Pt/C Electrocatalysts with Enhanced Activity and Stability toward the Oxygen Reduction Reaction (pages 1252–1257)

      Dr. Sang-Il Choi, Su-Un Lee, Ran Choi, Dr. Joon T. Park and Prof. Dr. Sang Woo Han

      Article first published online: 3 JUL 2013 | DOI: 10.1002/cplu.201300191

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      It's all about the levels: Hydrazine treatment of a Pt/C catalyst successfully yielded nitrogen-doped Pt/C (Pt/NC) with controlled nitrogen content. The as-prepared Pt/NC catalysts exhibited enhanced electrocatalytic activity and stability toward the oxygen reduction reaction (ORR), and the corresponding ORR activity is highly dependent on the level of nitrogen-doping (see figure; RHE=reversible hydrogen electrode).

    4. Camphoric Carbon-Grafted Ni/NiO Nanowire Electrodes for High-Performance Energy-Storage Systems (pages 1258–1265)

      Anjali Paravannoor, Appukuttan S. Nair, Rajagopal Ranjusha, Pattathil Praveen, Kavassery R. V. Subramanian, Nagarajan Sivakumar, Dr. Shantikumar V. Nair and Dr. Avinash Balakrishnan

      Article first published online: 10 JUL 2013 | DOI: 10.1002/cplu.201300087

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      Down to the wire: The preparation and utilization of camphoric carbon nanobeads grafted onto Ni/NiO nanowires for rechargeable electrodes for energy-storage applications are described (see picture). A working model button cell employing these rechargeable electrodes is also described and exhibits energy and power densities of 83 and 75 Wh kg−1, respectively.

    5. ZnO Nanorod Arrays and Hollow Spheres through a Facile Room-Temperature Solution Route and Their Enhanced Ethanol Gas-Sensing Properties (pages 1266–1272)

      Dr. Di Bao, Prof. Peng Gao, Longqiang Wang, Ying Wang, Prof. Yujin Chen, Guorui Chen, Prof. Guobao Li, Cheng Chang and Prof. Wei Qin

      Article first published online: 8 JUL 2013 | DOI: 10.1002/cplu.201300209

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      Detecting alcohol: The advantages of a water-in-oil emulsion method and a seed-mediated growth method have been combined in the synthesis of ordered ZnO 1D nanostructures (see SEM images a–d). A large concentration of oxygen vacancies and high surface energy are present on the surface of the nanostructures, which results in their enhanced ethanol gas-sensing properties at a relatively low temperature.

    6. Synthesis of Light-Induced Expandable Photoresponsive Polymeric Nanoparticles for Triggered Release (pages 1273–1281)

      Zhen Wang, Peng Wang and Prof. Dr. XinJing Tang

      Article first published online: 16 JUL 2013 | DOI: 10.1002/cplu.201300212

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      Open the cage: A series of cross-linked photolabile polymeric nanoparticles are described. Light irradiation leads to the particle swelling 315-fold in volume and the efficient release of the encapsulated contents in both aqueous solutions and cells. Selective triggered release on a cell monolayer is achieved. Curcumin is efficiently encapsulated in particles and photoregulation of its release and cell viability is also successfully achieved.

    7. Superhydrophobic Mesoporous Graphene for Separation and Absorption (pages 1282–1287)

      Dr. Zong-Liang Fan, Xiao-Juan Qin, Han-Xue Sun, Zhao-Qi Zhu, Chun-juan Pei, Wei-Dong Liang, Xue-Mei Bao, Jin An, Prof. Pei-Qing La, Prof. An Li and Prof. Wei-Qiao Deng

      Article first published online: 18 JUL 2013 | DOI: 10.1002/cplu.201300119

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      Mesoporous graphene with a surface area of 306 m2 g−1 has been synthesized by employing CaCO3 microspheres as hard templates. By surface modification with polydimethylsiloxane, the as-treated mesoporous graphene exhibited excellent absorption selectivity and recyclability, which has great potential in water purification, environmental protection, and cleanup of oil spills (see figure).

    8. A Spirobifluorene Derivative as a Single-Emitting Component for a Highly Efficient White Organic Electroluminescent Device (pages 1288–1295)

      Hsin-Yi Wen, Chun-Ming Chao, Prof. Mei-Ying Chang, Chiung-Wen Hsieh and Prof. Shu-Chen Hsieh

      Article first published online: 19 JUL 2013 | DOI: 10.1002/cplu.201300088

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      All aglow: High-brightness, broad-spectrum, white-light organic light-emitting diodes, incorporating a single emission layer of the blue-light-emitting material 2,2′,7,7′-tetrakis(pyren-1-yl)-9,9′-spirobifluorene (TPSBF), which comprises four pyrene units linked to a spirobifluorene core, are described (see figure).

    9. Redox-Mediated Synthesis of Functionalised Graphene: A Strategy towards 2D Multifunctional Electrocatalysts for Energy Conversion Applications (pages 1296–1303)

      Sreekuttan M. Unni, Siddheshwar N. Bhange, Bihag Anothumakkool and Dr. Sreekumar Kurungot

      Article first published online: 22 JUL 2013 | DOI: 10.1002/cplu.201300153

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      Alternative energy: One-pot reduction and functionalization of graphene oxide with ethylenedioxythiophene (EDOT) provides a multifunctional material (GEDOT) possessing catalytic sites for two distinct electrochemical reactions: the reduction of oxygen and reduction of triiodide to iodide (see figure). These processes occur in fuel cells and solar cells, respectively.

    10. Facile N[BOND]N Activation in Benzotriazole: Capturing the Dimroth Azo/Triazole Intermediate by Complexation to Iridium (pages 1304–1310)

      Prof. D. Scott Bohle, Zhijie Chua and Dr. Inna Perepichka

      Article first published online: 31 JUL 2013 | DOI: 10.1002/cplu.201300245

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      The obdurate benzotriazole ring: The in situ observation of benzotriazole ring and ring-opened isomers, which result from the Dimroth equilibrium for 1-[(nonafluorobutane)sulfonyl]benzotriazole in solution by 19F NMR and UV/Vis spectroscopy is reported (see scheme). Low-valent organometallic complexes offer the possibility of trapping the azo isomer and potentially promoting N[BOND]N activation and ring opening of benzotriazoles.

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