ChemPlusChem

Cover image for Vol. 79 Issue 4

April 2014

Volume 79, Issue 4

Pages 471–618

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
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      Cover Picture: Acoustic Alignment of a Supramolecular Nanofiber in Harmony with the Sound of Music (ChemPlusChem 4/2014) (page 471)

      Ryosuke Miura, Yasunari Ando, Yasuhisa Hotta, Prof. Dr. Yoshiki Nagatani and Prof. Dr. Akihiko Tsuda

      Article first published online: 31 JAN 2014 | DOI: 10.1002/cplu.201400012

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      The cover picture shows an image of the musical alignment of a supramolecular nanofiber, composed of an anthracene derivative, while the Kobe University Symphony Orchestra was playing classical music. In their Full Paper on page 516 ff., Akihiko Tsuda and co-workers report the quick and dynamic align of these nanofibers as a response to sensing acoustic streaming flows in liquid media generated by audible sound waves. When classical music was playing, the nanofiber dynamically aligned in harmony with the music.

  2. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. You have free access to this content
      Frontispiece

      Article first published online: 14 APR 2014 | DOI: 10.1002/cplu.201480471

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      The frontispiece shows a representative π-conjugated aryl–acetylene system and the key design rules in the fine tuning of the chemical/physical properties of such a structure. Appropriate molecular design and the availability of efficient synthetic protocols have led to impressive results in the creation of various high-performance aryl–acetylene semiconductors for organic field-effect transistor/organic photovoltaic cell devices. The major advances in this field are highlighted in the Minireview by Assunta Marrocchi et al. on page 486 ff.

  3. Cover Profile

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. You have free access to this content
      Acoustic Alignment of a Supramolecular Nanofiber in Harmony with the Sound of Music (page 472)

      Ryosuke Miura, Yasunari Ando, Yasuhisa Hotta, Prof. Dr. Yoshiki Nagatani and Prof. Dr. Akihiko Tsuda

      Article first published online: 4 FEB 2014 | DOI: 10.1002/cplu.201400008

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      …We have successfully developed a supramolecular nanofiber that can dynamically align in solution in harmony with the sound of classical music‥ ‥” This and more about the story behind the cover in the Cover Profile on page 472 and about the research itself on page 516.

  4. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. Graphical Abstract: ChemPlusChem 4/2014 (pages 473–479)

      Article first published online: 14 APR 2014 | DOI: 10.1002/cplu.201490010

  5. News

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. Spotlights on our sister journals: ChemPlusChem 4/2014 (pages 480–483)

      Article first published online: 14 APR 2014 | DOI: 10.1002/cplu.201490011

  6. Masthead

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. Masthead: ChemPlusChem 4/2014 (page 484)

      Article first published online: 14 APR 2014 | DOI: 10.1002/cplu.201490012

  7. Interview

    1. Top of page
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    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. You have free access to this content
      Authors Profile (page 485)

      Article first published online: 2 APR 2014 | DOI: 10.1002/cplu.201400032

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      “My motto is … work hard and smart. Determination will keep you going.” This and more about Dik-Lung Ma can be found on page 485.

  8. Minireview

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. Small Molecular Aryl Acetylenes: Chemically Tailoring High-Efficiency Organic Semiconductors for Solar Cells and Field-Effect Transistors (pages 486–507)

      Dr. Alessandra Broggi, Dr. Ivan Tomasi, Dr. Luca Bianchi, Dr. Assunta Marrocchi and Prof. Luigi Vaccaro

      Article first published online: 1 APR 2014 | DOI: 10.1002/cplu.201400001

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      Small wonder: Impressive results in the development of new π-conjugated triple-bond-containing molecular systems have been achieved (see scheme). Typical examples illustrating the design rationale and synthetic strategies used to obtain small-molecule aryl acetylene semiconductors for applications in field-effect transistors and photovoltaic cells are overviewed.

  9. Communications

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. Antagonism of mTOR Activity by a Kinetically Inert Rhodium(III) Complex (pages 508–511)

      Hai-Jing Zhong, Ka-Ho Leung, Li-Juan Liu, Lihua Lu, Daniel Shiu-Hin Chan, Dr. Chung-Hang Leung and Dr. Dik-Lung Ma

      Article first published online: 13 FEB 2014 | DOI: 10.1002/cplu.201400014

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      Limiting activity: The first metal-based inhibitor of mammalian target of rapamycin (mTOR) activity has been found. The cyclometalated rhodium(III) complex 1 (see scheme) inhibits mTOR activity in cell-free and cell-based systems. The size and hydrophobicity of the N N donor ligand and the nature of the metal center are determinants for mTOR inhibitory activity. The inhibitory effect of 1 is also dependent on FK506-binding protein 12.

    2. A Facile, Template-Free Synthesis of AgCl Hierarchical Architectures: Precursors of Highly Efficient Visible-Light Plasmonic Photocatalysts of Ag@AgCl (pages 512–515)

      Dr. Yu Wang, Prof. Gang Chen, Andi Di and Haiming Xu

      Article first published online: 3 MAR 2014 | DOI: 10.1002/cplu.201300420

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      Morph into shape: A facile template-free method is employed to prepare AgCl hierarchical architectures that are the precursors of highly efficient photocatalysts Ag@AgCl. The morphology of the product is altered upon changes to the solvent used in the preparation procedure (see picture).

  10. Full Papers

    1. Top of page
    2. Cover Picture
    3. Frontispiece
    4. Cover Profile
    5. Graphical Abstract
    6. News
    7. Masthead
    8. Interview
    9. Minireview
    10. Communications
    11. Full Papers
    1. Acoustic Alignment of a Supramolecular Nanofiber in Harmony with the Sound of Music (pages 516–523)

      Ryosuke Miura, Yasunari Ando, Yasuhisa Hotta, Prof. Dr. Yoshiki Nagatani and Prof. Dr. Akihiko Tsuda

      Article first published online: 7 JAN 2014 | DOI: 10.1002/cplu.201300400

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      Sound effects: A supramolecular nanofiber, composed of an anthracene derivative having benzamide substituents bearing long chiral alkyl chains, aligns in solution upon exposure to an audible sound wave with frequency up to 1000 Hz (see figure). When classical music is playing, the nanofiber aligns in harmony with the sound.

    2. Conducting Polypyrrole Nanotube Arrays as an Implant Surface: Fabricated on Biomedical Titanium with Fine-Tunability by Means of Template-Free Electrochemical Polymerization (pages 524–530)

      Jingwen Liao, Prof. Chengyun Ning, Guoxin Tan, Prof. Guoxin Ni and Haobo Pan

      Article first published online: 31 JAN 2014 | DOI: 10.1002/cplu.201300385

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      Grass roots: Template-free electrochemical polymerization in phosphate buffer solution has been used to obtain grasslike polypyrrole (PPy) nanowires of low density on titanium (see figure). By introducing a prenucleation film on the titanium, conducting PPy nanotube arrays (CPNAs) of large area were fabricated. The architectures of the CPNAs can be finely tuned between cones and cylinders by changing the electrochemical parameters.

    3. Silica Mineralization by a Peptide Template Having a High Charge Relay Effect (pages 531–535)

      Kazuki Murai, Prof. Masahiro Higuchi, Tatsuya Kuno and Dr. Katsuya Kato

      Article first published online: 1 APR 2014 | DOI: 10.1002/cplu.201300321

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      In charge: The influence of the charge relay effects of peptide organic templates on silica mineralization has been investigated. β-Sheet-type peptide shows higher catalytic activity toward the condensation of trimethylsilanol than random-coil peptide (see figure). Silica mineralized on the Val-His-Val-Glu-Val-Ser (VHVEVS) peptide template forms a flat surface, which is affected by the peptide morphology.

    4. 2,6-Bis(arylsulfonyl)anilines as Fluorescent Scaffolds through Intramolecular Hydrogen Bonds: Solid-State Fluorescence Materials and Turn-On-Type Probes Based on Aggregation-Induced Emission (pages 536–545)

      Teruo Beppu, So Kawata, Naoya Aizawa, Prof. Dr. Yong-Jin Pu, Prof. Dr. Yasuyuki Abe, Prof. Dr. Yoshihiro Ohba and Prof. Dr. Hiroshi Katagiri

      Article first published online: 31 JAN 2014 | DOI: 10.1002/cplu.201300428

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      Tug of war! Structural control through intramolecular hydrogen bonds simultaneously leads to a strong push–pull effect and immobilization of rotatable amino groups to generate high fluorescence emissions in the solid state. 2,6-Bis(2-aminophenylsulfonyl)anilines with rotatable amino groups at the flanking aryl units are affected by fluorescence quenching in solution (see picture). This nonemissive state shows a significant increase in the aggregated form.

    5. Metallaboranes from Metal Carbonyl Compounds and Their Utilization as Catalysts for Alkyne Cyclotrimerization (pages 546–551)

      V. P. Anju, Subrat Kumar Barik, Bijnaneswar Mondal, V. Ramkumar and Prof. Sundargopal Ghosh

      Article first published online: 6 FEB 2014 | DOI: 10.1002/cplu.201400013

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      Arachno­ compounds: Room-temperature UV photolysis of [Re2(CO)10] with BH3⋅thf yielded arachno-[(CO)8Re2B2H6], which catalyzed the cyclotrimerization of various internal and terminal alkynes to yield mixtures of 1,3,5- and 1,2,4-substituted benzenes (see figure).

    6. Interplay between Halogen Bonding and Lone Pair–π Interactions: A Computational and Crystal Packing Study (pages 552–558)

      Dr. Gilles Berger, Dr. Jalal Soubhye, Dr. Arie van der Lee, Dr. Christophe Vande Velde, Dr. René Wintjens, Prof. Philippe Dubois, Dr. Sébastien Clément and Prof. Franck Meyer

      Article first published online: 5 FEB 2014 | DOI: 10.1002/cplu.201400005

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      Getting organized: X-ray diffraction analyses of two polymorphs of a supramolecular thiophene complex show an arrangement controlled by N⋅⋅⋅I halogen bonding (XB), one case with and the other without the presence of two different lone pair (lp)⋅⋅⋅π interactions, namely O⋅⋅⋅pyridyl and I⋅⋅⋅tetrafluoroiodobenzene contacts (see figure). Quantum mechanical calculations confirm the interplay between concomitant XB and lp⋅⋅⋅π interactions.

    7. Facile Synthesis of [Cu(SCH3)] Nanowires with High Charge Mobility (pages 559–563)

      Prof. Dr. Yuliang Zhang, Ting Xia, Dr. Kin Man Yu, Fuhua Zhang, Heng Yang, Boyang Liu, Yan An, Prof. Dr. Yansheng Yin and Prof. Dr. Xiaobo Chen

      Article first published online: 4 FEB 2014 | DOI: 10.1002/cplu.201300415

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      On the wire: Highly crystalline, superlong [Cu(SCH3)] nanowires, obtained from the hydrothermal reaction of Cu(NO3)2⋅3 H2O, DMSO, and water, display a high hole mobility of 2 cm2 V−1 S−1 (see figure), which demonstrates their promising future in electronic-device applications.

    8. Assembly into β-Sheet Structures upon Peptide–Liposome Conjugation through Copper(I)-Catalyzed [3+2] Azide–Alkyne Cycloaddition (pages 564–568)

      Dr. Silvia Cavalli, Dr. Mark Overhand and Dr. Alexander Kros

      Article first published online: 4 FEB 2014 | DOI: 10.1002/cplu.201300354

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      Secondary structures: The random-coil-to-β-sheet transition of the (Leu-Glu)4 peptide motif is induced upon its conjugation to the liposome surface through “click” chemistry (see figure). Circular dichroism (CD) spectroscopy enables the in situ monitoring of this reaction over time. A change in the peptide secondary structure is observed within 15 min, and the β-sheet conformation becomes the dominant secondary structure after 45 min.

    9. Synthesis and Growth Mechanism of White-Fungus-Like Nickel Sulfide Microspheres, and Their Application in Polymer Composites with Enhanced Microwave-Absorption Properties (pages 569–576)

      Shuai He, Chang Lu, Dr. Guang-Sheng Wang, Jia-Wei Wang, Hao-Yue Guo and Prof. Lin Guo

      Article first published online: 13 FEB 2014 | DOI: 10.1002/cplu.201300435

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      Mushrooming into something: A NiSx/polyvinylidene fluoride organic–inorganic nanocomposite with enhanced microwave absorption ability was fabricated based on the synthesized white-fungus-like NiSx microspheres (see figure). The enhanced properties result from its high magnetic and dielectric performance and multiple loss mechanisms.

    10. Direct Growth of NiCo2S4 Nanotube Arrays on Nickel Foam as High-Performance Binder-Free Electrodes for Supercapacitors (pages 577–583)

      Jun Pu, Tingting Wang, Haiyang Wang, Yao Tong, Chenchen Lu, Wei Kong and Prof. Dr. Zhenghua Wang

      Article first published online: 13 FEB 2014 | DOI: 10.1002/cplu.201300431

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      Solid becomes hollow: Uniform NiCo2S4 nanotube arrays on conductive 3D nickel foam were obtained through use of a two-step hydrothermal method (see figure) and were directly applied as the binder-free electrode for electrochemical capacitors. The electrode of NiCo2S4 nanotube arrays exhibits enhanced specific capacitance and a superior stability.

    11. Isomerism of Cycloserine and Its Protonated Form (pages 584–591)

      Dr. Caterina Fraschetti, Prof. Antonello Filippi, Dr. Stefano Borocci, Dr. Vincent Steinmetz and Prof. Maurizio Speranza

      Article first published online: 24 FEB 2014 | DOI: 10.1002/cplu.201400006

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      Pucker up: The gas-phase isomerism of cycloserine and its protonated forms was investigated computationally and experimentally by IR multiphoton dissociation spectroscopy. The isomers of cycloserine show pronounced ring puckering, which generates rich conformeric landscapes (see figure). The relative stability of the various isomers responds to a balance between attractive and repulsive interactions among the functional groups of the molecule.

    12. Dispersion Characteristics and Aggregation in Titanate Nanowire Colloids (pages 592–600)

      Dr. Endre Horváth, Lucie Grebikova, Dr. Plinio Maroni, Dr. Tamás Szabó, Dr. Arnaud Magrez, Prof. László Forró and Dr. Istvan Szilagyi

      Article first published online: 24 FEB 2014 | DOI: 10.1002/cplu.201300426

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      Dispersion stabilization: Charging and aggregation in aqueous dispersions of positive titanate nanowires can be tuned through the addition of the oppositely charged poly(styrene sulfonate) polyelectrolyte thanks to its strong affinity for the titanate surface. Accordingly, the system is stable at low polyelectrolyte doses, unstable with rapid aggregation of the nanowires near the charge neutralization point, and stable again at high polyelectrolyte coverages, as shown in the picture.

    13. Controllable Synthesis and Peculiar Optical Properties of Lanthanide-Doped Fluoride Nanocrystals (pages 601–609)

      Prof. Dr. Guoping Dong, Huilin He, Qiwen Pan, Gengxu Chen, Junhua Xie, Dr. Zhijun Ma and Prof. Dr. Mingying Peng

      Article first published online: 24 FEB 2014 | DOI: 10.1002/cplu.201300373

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      Transition period: Yb3+/Tm3+-codoped NaYF4 nanocrystals with different phases (cubic α and hexagonal β) and morphologies (nanoparticles, nanorods, nanoplates) can be controllably fabricated by a convenient hydrothermal synthesis technique. Anisotropic polarization emission is obtained in individual NaYF4:Yb,Tm nanorods, which have potential applications as polarized light resources, bio-labels, photodetectors, lasers, and so forth (see picture).

    14. Anticancer Activity of Half-Sandwich RhIII and IrIII Metalla-Prisms Containing Lipophilic Side Chains (pages 610–618)

      Dr. Gajendra Gupta, Dr. Jerald Mahesh Kumar, Amine Garci, Nandini Rangaraj, Dr. Narayana Nagesh and Prof. Dr. Bruno Therrien

      Article first published online: 11 MAR 2014 | DOI: 10.1002/cplu.201300425

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      CHARGE! Two hexacationic pentamethylcyclopentadienyl rhodium(III) and iridium(III) metalla-prisms have been synthesized and their antiproliferative activity has been evaluated in vitro in human cancer cell lines. The positively charged metalla-prisms appear to target mitochondria (see figure), and preclinical studies suggest that the rhodium derivative could be a potential antitumor drug.

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