ChemPlusChem

Cover image for Vol. 79 Issue 2

February 2014

Volume 79, Issue 2

Pages 183–332

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. You have free access to this content
      Cover Picture: Influence of Chromophore Length and Acceptor Groups on the Optical Properties of Rigidified Merocyanine Dyes (ChemPlusChem 2/2014) (page 183)

      Katharina Christina Kreß, Dr. Thomas Fischer, Dr. Joachim Stumpe, Dr. Wolfgang Frey, Dr. Melanie Raith, Omid Beiraghi, Prof. Dr. S. Holger Eichhorn, Dr. Stefan Tussetschläger and Prof. Dr. Sabine Laschat

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cplu.201300393

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      The cover picture shows three rigidified “push–pull” dyes with variations in the length of the chromophore. Upon excitation within the UV/Vis region, electronic transitions take place. On the left are the calculated HOMO energies and on the right are the corresponding LUMO energies, with inverted nodal planes shown. Systematic experimental and theoretical investigations of the absorption and emission spectra of dyes that vary in either chromophore length or acceptor unit were carried out. The consequent results provide information on structure–property relationships, which could be used to tailor potentially functional dyes for widespread applications. Further details can be found in the Full Paper on page 223 by Sabine Laschat, Holger Eichhorn, and co-workers.

  2. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. You have free access to this content
      Frontispiece: Effective Surface Functionalization of Carbon Fibers for Fiber/Polymer Composites with Tailor-Made Interfaces

      Dr. Kota Shiba, Prof. Dr. Motohiro Tagaya, Dr. Sadaki Samitsu and Prof. Dr. Satoshi Motozuka

      Version of Record online: 28 OCT 2014 | DOI: 10.1002/cplu.201480271

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      The frontispiece shows a representative scheme for various functional composites based on carbon fiber (CF) prepared using polymer chemistry, inorganic synthetic chemistry, and powder technology. The Minireview by Motohiro Tagaya et al. on page 197 ff. outlines the basic properties of CFs, their surface functionalization, and the use as polymer composites. The functionalization can be achieved through physical, chemical, or electrochemical treatment. In particular, chemical coating with inorganic oxides provides not only a variety of functionalities originating from the combination of CF and inorganic oxides but also a modified surface, which has affinity with polymers. In addition, characterization techniques for the interfaces of the composites are highlighted.

  3. Cover Profile

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. You have free access to this content
      Influence of Chromophore Length and Acceptor Groups on the Optical Properties of Rigidified Merocyanine Dyes (page 184)

      Katharina Christina Kreß, Dr. Thomas Fischer, Dr. Joachim Stumpe, Dr. Wolfgang Frey, Dr. Melanie Raith, Omid Beiraghi, Prof. Dr. S. Holger Eichhorn, Dr. Stefan Tussetschläger and Prof. Dr. Sabine Laschat

      Version of Record online: 30 DEC 2013 | DOI: 10.1002/cplu.201300389

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      The development of novel materials for organic light-emitting diodes and photovoltaic devices is currently one of the hottest topics in chemistry and materials science.” This and more about the story behind the cover in the Cover Profile on page 184 and about the research itself on page 223.

  4. Graphical Abstract

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

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

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. Masthead: ChemPlusChem 2/2014 (page 196)

      Version of Record online: 11 FEB 2014 | DOI: 10.1002/cplu.201490005

  7. Minireview

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. Effective Surface Functionalization of Carbon Fibers for Fiber/Polymer Composites with Tailor-Made Interfaces (pages 197–210)

      Dr. Kota Shiba, Prof. Dr. Motohiro Tagaya, Dr. Sadaki Samitsu and Prof. Dr. Satoshi Motozuka

      Version of Record online: 27 JAN 2014 | DOI: 10.1002/cplu.201300356

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      High in fiber: Carbon fibers (CFs), which are widely utilized in fields ranging from fundamental research to industry, can be functionalized by both thin-layer coating and nanoparticle immobilization (see scheme). In this Minireview, these techniques and some practical applications of functionalized CFs, such as carbon fiber reinforced plastic (CFRP), are overviewed after briefly describing the basic properties of CFs.

  8. Communications

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. Nacrelike Nanocomposite Films from Fluorescent Hyperbranched Poly(amido amine)s and Clay Nanosheets (pages 211–216)

      Prof. Dr. Wentao Hao, Songyan Ding, Liang Zhang, Wei Liu and Prof. Dr. Wen Yang

      Version of Record online: 11 DEC 2013 | DOI: 10.1002/cplu.201300371

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      Mother-of-pearl films: Flexible, transparent, and glossy nanocomposite films have been fabricated through vacuum-aided filtration self-assembly of hyperbranched poly(amido amine)s (HPAMAMs) and clay nanosheets. Such hybrid films show strong fluorescence properties and high strength (see figure). As a result of the good biocompatibility of HPAMAMs, the hybrid films are promising in biomedical research.

    2. Palladium Supported on Magnetic Core–Shell Nanoparticles: An Efficient and Reusable Catalyst for the Oxidation of Alcohols into Aldehydes and Ketones by Molecular Oxygen (pages 217–222)

      Lei Zhang, Prof. Pinhua Li, Dr. Jin Yang, Dr. Min Wang and Prof. Lei Wang

      Version of Record online: 22 NOV 2013 | DOI: 10.1002/cplu.201300353

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      Magnetic nanoparticles get support: A novel and highly efficient catalyst of magnetic nanoparticles supported on palladium has been developed for the oxidation of alcohols into the corresponding carbonyl compounds by molecular oxygen (see scheme; Pro=proline). The catalyst is readily prepared, easily recoverable, and reusable for at least eight cycles without significant loss of its activity.

  9. Full Papers

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Minireview
    9. Communications
    10. Full Papers
    1. Influence of Chromophore Length and Acceptor Groups on the Optical Properties of Rigidified Merocyanine Dyes (pages 223–232)

      Katharina Christina Kreß, Dr. Thomas Fischer, Dr. Joachim Stumpe, Dr. Wolfgang Frey, Dr. Melanie Raith, Omid Beiraghi, Prof. Dr. S. Holger Eichhorn, Dr. Stefan Tussetschläger and Prof. Dr. Sabine Laschat

      Version of Record online: 26 NOV 2013 | DOI: 10.1002/cplu.201300308

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      Marked and valuable peak shifts in the absorption spectra, as well as quantum yields of up to 95 % were obtained through the systematic experimental and theoretical investigation of rigidified merocyanine dyes. Furthermore, solvatochromism studies in appropriate solvents led to extreme variations in the line shapes (see figure; EWG=electron-withdrawing group).

    2. Synthesis of 5-Ethoxymethylfurfural from Fructose and Inulin Catalyzed by a Magnetically Recoverable Acid Catalyst (pages 233–240)

      Prof. Zehui Zhang, Yimei Wang, Zhongfeng Fang and Dr. Bing Liu

      Version of Record online: 28 NOV 2013 | DOI: 10.1002/cplu.201300301

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      Accelerated attraction: A new process for the synthesis of 5-ethoxymethylfurfural from fructose-based carbohydrates catalyzed by a magnetically recoverable acid catalyst is described. After the reaction, the catalyst can be readily recovered by means of an external magnet and reused several times without any loss in catalytic activity (see picture).

    3. Dual Lewis Base Functionalization of Ionic Liquids for Highly Efficient and Selective Capture of H2S (pages 241–249)

      Kuan Huang, Da-Niu Cai, Yong-Le Chen, Prof. You-Ting Wu, Prof. Xing-Bang Hu and Prof. Zhi-Bing Zhang

      Version of Record online: 4 DEC 2013 | DOI: 10.1002/cplu.201300365

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      Shared labor: The dual Lewis base functionalization strategy enables the cooperative interaction of carboxyl⋅⋅⋅H2S⋅⋅⋅amine, thus significantly enhancing the H2S absorption capacity (see scheme). Conversely, the interaction of CO2 with the carboxylate group is weakened by the conjoint tertiary amine group through the electron-withdrawing effect. The interaction of CO2 with the amine group is unfavorable owing to the absence of active protons in CO2. Thus, CO2 solubility is limited.

    4. Synthesis of Well-Defined Dawson-Type Poly(N,N-diethylacrylamide) Organopolyoxometalates (pages 250–256)

      Jennifer Lesage de la Haye, Patricia Beaunier, Prof. Laurent Ruhlmann, Prof. Bernold Hasenknopf, Dr. Emmanuel Lacôte and Dr. Jutta Rieger

      Version of Record online: 11 DEC 2013 | DOI: 10.1002/cplu.201300346

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      A RAFT of changes: Reversible addition–fragmentation chain transfer (RAFT) polymerization from a trithiocarbonate group that is grafted onto a polyoxometalate yields organic–inorganic hybrids with high molar masses and low polydispersities. The compounds display improved photocatalytic properties (see figure; SEC=size-exclusion chromatography).

    5. Water-Soluble Ionic Palladium Complexes: Effect of Pendant Ionic Groups on Palladium Nanoparticles and Suzuki–Miyaura Reaction in Neat Water (pages 257–265)

      Dr. Liuyi Li, Dr. Tao Wu, Dr. Jinyun Wang and Prof. Dr. Ruihu Wang

      Version of Record online: 11 DEC 2013 | DOI: 10.1002/cplu.201300374

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      Importance of pendant linkages: Water-soluble ionic ligands have been used as efficient stabilizers of palladium nanoparticles. The pendant ionic groups of the organic ligands have an important effect on the structures of the palladium nanoparticles and on their catalytic activities in Suzuki–Miyaura cross-coupling reactions in neat water (see figure).

    6. Two CoII Metal–Organic Frameworks Based on a Multicarboxylate Ligand as Electrocatalysts for Water Splitting (pages 266–277)

      Prof. Yun Gong, Zhi Hao, Dr. Jiangping Meng, Huifang Shi, Penggang Jiang, Miaomiao Zhang and Prof. Jianhua Lin

      Version of Record online: 8 NOV 2013 | DOI: 10.1002/cplu.201300334

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      Water power: Based on 4,5-di(4′-carboxylphenyl)phthalic acid (H4L), two CoII complexes (see figure for topology) formulated as [Co4L2(4,4′-bpy)(H2O)6]3.5 H2O (4,4′-bpy=4,4′-bipyridine) and [Co2L(azene)(H2O)3]DMF (azene=(E)-1,2-di(pyridin-4-yl)diazene, DMF=dimethylformamide) both exhibit electrocatalytic activities toward generating H2 and O2 from water with lowered overpotentials and enhanced currents.

    7. Quinuclidine Stabilized on FeNi3 Nanoparticles as Catalysts for Efficient, Green, and One-Pot Synthesis of Triazolo[1,2-a]indazole-triones (pages 278–283)

      Dr. Seyed Mohsen Sadeghzadeh

      Version of Record online: 7 NOV 2013 | DOI: 10.1002/cplu.201300341

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      Reuse and recycle: A magnetically separable catalyst consisting of quinuclidin-3-thiol supported on propylsilane-functionalized silica-coated FeNi3 nanoparticles (FeNi3/quinuclidine) has been prepared. The FeNi3/quinuclidine is an efficient heterogeneous catalyst for the synthesis of triazolo[1,2-a]indazole-triones under solvent-free conditions at room temperature (see scheme).

    8. Hollow Porous Carbon Fiber from Cotton with Nitrogen Doping (pages 284–289)

      Dr. Wenzhong Shen, Prof. Tuoping Hu, Peiyu Wang, Dr. Haizhen Sun and Prof. Weibin Fan

      Version of Record online: 30 DEC 2013 | DOI: 10.1002/cplu.201300359

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      Cotton on to carbon: Porous carbon fiber with a hollow structure and oxygen-containing groups has been prepared from cotton (see figure). Nitrogen-containing groups can be incorporated into the carbon matrix through urea decomposition during carbonization. The carbon fiber shows high adsorption capacities of CO2 owing to its surface hydrophilic groups and developed pore structure.

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      Fabrication of Magnetic–Fluorescent Bifunctional Flexible Coaxial Nanobelts by Electrospinning Using a Modified Coaxial Spinneret (pages 290–297)

      Qianli Ma, Jinxian Wang, Xiangting Dong, Wensheng Yu and Guixia Liu

      Version of Record online: 5 NOV 2013 | DOI: 10.1002/cplu.201300262

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      In a spin: A novel coaxial nanobelt structure has been fabricated by electrospinning using modified coaxial spinnerets. The magnetic and fluorescent domains in the material are separate meaning that the light absorption of Fe3O4 nanoparticles can be weakened, and strong luminescence of the magnetic–fluorescent coaxial nanobelts can be achieved (see figure). The modified coaxial spinneret is of universal significance for fabricating other functional coaxial nanobelts.

    10. Assembly of TiO2-on-Cu2O Nanocubes with Narrow-Band Cu2O-Induced Visible-Light-Enhanced Photocatalytic Activity (pages 298–303)

      Jiali Liu, Prof. Ming Wen, Hanxing Chen, Dr. Jing Li and Prof. Qing-Sheng Wu

      Version of Record online: 2 JAN 2014 | DOI: 10.1002/cplu.201300278

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      Seeing the light: Newly designed visible-light photocatalysts of TiO2-on-Cu2O nanocubes have been successfully synthesized by means of a facile self-assembly route, and exhibit markedly enhanced visible-light photocatalytic activity toward the photodegradation of rhodamine B (see figure).

    11. Immobilization of LaW10 onto Ionic-Liquid-Modified Mesoporous Silica: Deep Desulfurization with Zero-Order Reaction Kinetics (pages 304–309)

      Yang Chen and Prof. Yu-Fei Song

      Version of Record online: 29 NOV 2013 | DOI: 10.1002/cplu.201300323

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      The immobilization of LaW10 onto ionic-liquid (IL)-modified mesoporous silica results in a new heterogeneous catalyst, LaW10/IL-SiO2, which can achieve the deep desulfurization of dibenzothiophene, benzothiophene, and 4,6-dimethyldibenzothiophene under mild conditions (see figure). The extractive catalytic oxidative desulfurization process with LaW10/IL-SiO2 does not require addition of the IL with each catalyst reuse.

    12. In Situ Formation of Semichelating Ligands: A Strategy for Tuning the Magnetic Coupling in Azide-Bridged Copper(II) Complexes (pages 310–317)

      Wen-Bo Shi, Dr. Ai-Li Cui and Prof. Hui-Zhong Kou

      Version of Record online: 12 NOV 2013 | DOI: 10.1002/cplu.201300304

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      Use of the Cu[BOND]O contact: A strategy of designing azide-bridged CuII complexes based on the Jahn–Teller effect for CuII has been achieved. Semichelating ether ligands having a weak coordinating oxygen atom are formed in situ as a result of the facile alcoholysis of the chloro-substituted imidazole or pyrazole ligands (see scheme). Five new CuII complexes containing basal–basal end-on azide bridges were obtained.

    13. Effects of Inorganic Acid Modification on Photocatalytic Performance of TiO2 and Its Activity-Enhanced Mechanism Related to Adsorbed O2 (pages 318–324)

      Dr. Haiqin Cui, Yue Cao, Prof. Liqiang Jing, Dr. Yunbo Luan and Na Li

      Version of Record online: 4 NOV 2013 | DOI: 10.1002/cplu.201300285

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      Acid effects on catalysis: The surface photovoltage spectroscopy (SPS) intensities of TiO2 samples correspond to the amounts of adsorbed O2, that is, the larger the amount of adsorbed O2, the stronger the SPS response (see figure). A strong SPS response means high photogenerated charge separation, leading to enhanced TiO2 photocatalytic activity.

    14. Graphene-Supported Trimetallic Core–Shell Cu@CoNi Nanoparticles for Catalytic Hydrolysis of Amine Borane (pages 325–332)

      Xiangyu Meng, Lan Yang, Nan Cao, Cheng Du, Dr. Kai Hu, Dr. Jun Su, Prof. Dr. Wei Luo and Prof. Dr. Gongzhen Cheng

      Version of Record online: 27 NOV 2013 | DOI: 10.1002/cplu.201300336

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      Hydrogen-storage materials: Well-dispersed trimetallic core–shell Cu@CoNi nanoparticles (NPs) supported on graphene have been synthesized through a facile one-step in situ co-reduction route. The as-synthesized trimetallic core–shell NPs exerted good catalytic activity and magnetic recyclability for the hydrolytic dehydrogenation of amine boranes (see figure).

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