Chemistry – An Asian Journal

Cover image for Vol. 12 Issue 6

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

Editor: Theresa Kueckmann, Deputy Editor: Heiko Kuhn; Chairman of the Editorial Board: Ryoji Noyori

Impact Factor: 4.592

ISI Journal Citation Reports © Ranking: 2015: 29/163 (Chemistry Multidisciplinary)

Online ISSN: 1861-471X

Associated Title(s): Angewandte Chemie International Edition, Asian Journal of Organic Chemistry, Chemistry - A European Journal, ChemNanoMat, Chinese Journal of Chemistry, Journal of the Chinese Chemical Society, The Chemical Record

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  1. Full Papers

    1. Biosensors

      Ionic Self-Assembled Platform of Perylenediimide–Sodium Dodecylsulfate for Detection of Spermine in Clinical Samples

      Dr. Prabhpreet Singh, Lalit Singh Mittal, Dr. Gaurav Bhargava and Dr. Subodh Kumar

      Version of Record online: 29 MAR 2017 | DOI: 10.1002/asia.201700120

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      Sight for sore eyes! The ionic self-assembly of amphiphilic N1-dodecyl-N3-(4-phenyl)benzimidazolium-functionalized perylenediimide (DAB-PDI) with sodium dodecyl sulfate (SDS) exhibits selectivity for the detection of spermine (limit of detection=27.5 nm) in urine and blood serum (see figure).

  2. Communications

    1. Mechanofluorochromism

      Structural Insights Into 9-Styrylanthracene-Based Luminophores: Geometry Control Versus Mechanofluorochromism and Sensing Properties

      Xu Zhang, Dr. Yi-Xuan Wang, Jing Zhao, Prof. Dr. Pengfei Duan, Prof. Dr. Yulan Chen and Prof. Dr. Long Chen

      Version of Record online: 29 MAR 2017 | DOI: 10.1002/asia.201700183

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      All he ever does is watch TVA: A series of 9-styrylanthracene-based luminophores with different geometries (symmetrical DTVA, asymmetrical TVA) were facilely synthesized for a systematical photophysical investigation. The targets display reversible mechanofluorochromism and selective sensing ability for picric acid.

    2. Sequence-defined Chiral Polyimides

      Sequence-Dependent Self-Assembly of Chiral Polyimides

      Jijun Yan, Dr. Chuanqing Kang, Dr. Zheng Bian, Dr. Rizhe Jin, Dr. Xiaoye Ma, Dr. Zhijun Du, Haibo Yao and Prof. Dr. Lianxun Gao

      Version of Record online: 29 MAR 2017 | DOI: 10.1002/asia.201700284

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      Direction determined! Sequence-defined chiral polyimides with identical chiral monomers arranged in head-to-head, head-to-tail, and random sequences are designed. The direction of the asymmetric units in the main chain regulates their self-assemblies and the polymer–guest interactions, by which this study presents a method to distinguish the enantiomers of ibuprofen (IPF) by sight alone.

  3. Full Papers

    1. Dehydrogenation

      Palladium Nanoparticles Supported on Titanium-Doped Graphitic Carbon Nitride for Formic Acid Dehydrogenation

      Dr. Yongmei Wu, Dr. Meicheng Wen, Dr. Miriam Navlani-García, Dr. Yasutaka Kuwahara, Dr. Kohsuke Mori and Prof. Hiromi Yamashita

      Version of Record online: 29 MAR 2017 | DOI: 10.1002/asia.201700041

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      Support your (nano)team! Pd nanoparticles (NPs) supported on Ti-doped graphitic carbon nitride (g-C3N4) showed a high catalytic activity leading to hydrogen production from formic acid dehydrogenation. This activity could be attributed to the small Pd NPs size, as well as the strong interaction between Pd NPs and Ti-doped g-C3N4.

    2. Mesoporous Materials

      Gold Nanoparticles Supported on Mesoporous Titania Thin Films with High Loading as a CO Oxidation Catalyst

      Dr. Shingo Akita, Dr. Makoto Amemiya, Dr. Takanori Matsumoto, Dr. Yohei Jikihara, Dr. Tsuruo Nakayama, Dr. Md. Shahriar A. Hossain, Kenya Kani, Prof. Daisuke Ishii, Prof. Md. Tofazzal Islam, Dr. Xiangfen Jiang, Prof. Amanullah Fatehmulla, Prof. Wazirzada Aslam Farooq, Prof. Yoshio Bando, Dr. Victor Malgras and Prof. Yusuke Yamauchi

      Version of Record online: 28 MAR 2017 | DOI: 10.1002/asia.201700080

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      Clash of the Titania: In the present work, 2.4 nm gold nanoparticles (Au NPs) are uniformly dispersed on mesoporous titania thin films which are structurally tuned by controlling the calcination temperature. The gold content of the catalyst is as high as 27.8 wt %. Furthermore, the reaction rate of the gold particles is enhanced by one order of magnitude when supported on mesoporous titania compared to non-porous titania.

  4. Cover Pictures

    1. You have free access to this content
      Double-Stranded Helical Oligomers Covalently Bridged by Rotary Cyclic Boronate Esters

      Prof. Hiroki Iida, Kenji Ohmura, Ryuta Noda, Dr. Soichiro Iwahana, Prof. Hiroshi Katagiri, Prof. Naoki Ousaka, Taku Hayashi, Dr. Yuh Hijikata, Prof. Stephan Irle and Prof. Eiji Yashima

      Version of Record online: 28 MAR 2017 | DOI: 10.1002/asia.201700350

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      Setting the helices in motion: The design and construction of artificial molecular rotors that perform a sophisticated rotary motion have attracted considerable interest in the context of molecular machines. In this study, novel double-stranded helices covalently bridged by two cyclic boronate esters were prepared via simple mixing of two complementary dimer strands bearing diethyl boronates and diols. A rotational motion of the encased cyclic boronate ester units can take place simultaneously with helix-inversion of the double-stranded helical framework, thus providing a unique molecular rotor that undergoes dual rotary and inverting (twisting) motions. More information can be found in the Full Paper by Hiroki Iida, Eiji Yashima, Stephan Irle et al. (DOI: 10.1002/asia.201700162).

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      Boron Complexes of Glyoxal-Derived Ugi Adducts as a New Class of Aggregation-Induced Emission Photoluminescent Materials

      Huiping Wei, Gaigai Wang, Yingchun Wang, Binbin Li, Jianjun Huang, Dr. Stepan Kashtanov, Dr. Kristof Van Hecke, Dr. Olga P. Pereshivko and Dr. Vsevolod A. Peshkov

      Version of Record online: 28 MAR 2017 | DOI: 10.1002/asia.201700250

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      Shine bright like a dAIEmond! A series of new O,O-chelated boron complexes has been prepared through a four-component Ugi reaction followed by the complexation of the resulting 1,3-dicarbonyl compounds with boron trifluoride diethyl etherate. The optical properties of these novel luminophores have been assessed, revealing pronounced aggregation-induced emission (AIE) features. The photoluminescence quantum yields for the solid samples were observed in the range of about 0.80–1.00, placing them among the most efficient boron-based luminophores. More information can be found in the Communication by Vsevolod A. Peshkov, Olga P. Pereshivko et al. (DOI: 10.1002/asia.201700051).

  5. Full Papers

    1. Silver-based Photocatalysts

      Molten Ag2SO4-based Ion-Exchange Preparation of Ag0.5La0.5TiO3 for Photocatalytic O2 Evolution

      Shichao Zong, Cheng Cheng, Dr. Jinwen Shi, Zhenxiong Huang, Yuchao Hu, Dr. Honghui Yang and Prof. Dr. Liejin Guo

      Version of Record online: 27 MAR 2017 | DOI: 10.1002/asia.201700101

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      Evolution at work: Ag0.5La0.5TiO3, synthesized by a newly developed ion-exchange method using molten Ag2SO4 as Ag+ source, showed improved photocatalytic activity for O2 evolution.

    2. NIR Fluorescent Dyes | Very Important Paper

      Synthesis of N,N-Dialkylamino-nor-Dihydroxanthene-Hemicyanine Fused Near-Infrared Fluorophores and Their First Water-Soluble and/or Bioconjugatable Analogues

      Michelle Jui Hsien Ong, Sylvain Debieu, Dr. Mathieu Moreau, Prof. Anthony Romieu and Dr. Jean-Alexandre Richard

      Version of Record online: 27 MAR 2017 | DOI: 10.1002/asia.201700176

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      Like a fish to water! A concise and efficient synthetic route toward nor-dihydroxanthene-hemicyanine hybrids has been developed. A facile further extension to water-soluble derivatives has led to a novel class of NIR fluorescent dyes with valuable spectral features for applications in biosensing and bioimaging.

  6. Communications

    1. Photoluminescent Materials | Very Important Paper

      Boron Complexes of Glyoxal-Derived Ugi Adducts as a New Class of Aggregation-Induced Emission Photoluminescent Materials

      Huiping Wei, Gaigai Wang, Yingchun Wang, Binbin Li, Jianjun Huang, Dr. Stepan Kashtanov, Dr. Kristof Van Hecke, Dr. Olga P. Pereshivko and Dr. Vsevolod A. Peshkov

      Version of Record online: 24 MAR 2017 | DOI: 10.1002/asia.201700051

      Thumbnail image of graphical abstract

      Shine bright like a dAIEmond! A series of O,O-chelated boron complexes was prepared through a four-component Ugi reaction followed by complexation of the resulting 1,3-dicarbonyl compounds with boron trifluoride diethyl etherate. The optical properties of these luminophores were investigated, revealing pronounced aggregation-induced emission (AIE) features.

  7. Full Papers

    1. Radical Ions

      Tetrabutylammonium Salts of Aluminum(III) and Gallium(III) Phthalocyanine Radical Anions Bonded with Fluoren-9-olato Anions and Indium(III) Phthalocyanine Bromide Radical Anions

      Dr. Dmitri V. Konarev, Dr. Salavat S. Khasanov, Dr. Manabu Ishikawa, Dr. Yoshiaki Nakano, Dr. Akihiro Otsuka, Prof. Hideki Yamochi, Prof. Gunzi Saito and Prof. Rimma N. Lyubovskaya

      Version of Record online: 24 MAR 2017 | DOI: 10.1002/asia.201700138

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      A radical approach: Crystalline (Bu4N+)2[MIII(HFl−O)(Pc.3−)].−(Br)1.5 C6H4Cl2 (M=Al, Ga) containing AlIII and GaIII phthalocyanine (Pc) radical anions and diamagnetic fluoren-9-olato anions (HFl−O) coordinated to MIII centers in addition to (Bu4N+)[InIIIBr(Pc.3−)].−solvent (3) with InIII phthalocyanine bromide radical anions are obtained. Their syntheses, crystal structures, and optical and magnetic properties are discussed.

    2. Organic Cathodes

      Synthesis and Exploration of Ladder-Structured Large Aromatic Dianhydrides as Organic Cathodes for Rechargeable Lithium-Ion Batteries

      Jian Xie, Wangqiao Chen, Zilong Wang, Kenneth Choo Wei Jie, Dr. Ming Liu and Prof. Dr. Qichun Zhang

      Version of Record online: 23 MAR 2017 | DOI: 10.1002/asia.201700070

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      At the top of the aromatic ladder: Two novel ladder-structured dianhydrides originating from naphthalene and perylene building blocks, with large aromaticity, were synthesized and investigated. They deliver a promising electrochemical performance as cathode materials for the application of rechargeable lithium organic batteries.

    3. Functionalized Thin Films

      Systematic Study of Functionalizable, Non-Biofouling Agarose Films with Protein and Cellular Patterns on Glass Slides

      Gyeongyeop Han, Dr. Daehwa Hong, Dr. Bong Soo Lee, EunRae Ha, Dr. Ji Hun Park, Prof. Dr. Insung S. Choi, Prof. Dr. Sung Min Kang and Prof. Dr. Jungkyu K. Lee

      Version of Record online: 23 MAR 2017 | DOI: 10.1002/asia.201700010

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      Have you seen the film? A systematic study was used to evaluate the non-biofouling performance and binding capabilities of functionalizable, non-biofouling agarose films, which were prepared by using different agarose concentrations. Protein and cellular patterns were generated by using a microarrayer, microcontact printing, and micromolding in capillaries (see figure).

    4. Self-assembly

      Simple and Versatile Preparation of Luminescent Amphiphilic Platinum(II)-containing Polystyrene Complexes With Transformable Nanostructures Assisted by Pt⋅⋅⋅Pt and π–π Interactions

      Heung-Kiu Cheng, Dr. Clive Yik-Sham Chung, Dr. Kaka Zhang and Prof. Dr. Vivian Wing-Wah Yam

      Version of Record online: 23 MAR 2017 | DOI: 10.1002/asia.201700123

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      Go platinum: A series of platinum(II)-containing polystyrene complexes has been synthesized and demonstrated to undergo self-assembly into different superstructures in various solvent mixtures with the stabilization of Pt⋅⋅⋅Pt and/or π–π interactions, resulting in remarkable luminescence changes.

  8. Cover Pictures

    1. You have free access to this content
      High-Performance Organic Solar Cells Based on a Non-Fullerene Acceptor with a Spiro Core

      Hua Sun, Po Sun, Dr. Cong Zhang, Dr. Yingguo Yang, Dr. Xingyu Gao, Dr. Fei Chen, Dr. Zongxiang Xu, Prof. Zhi-Kuan Chen and Prof. Wei Huang

      Version of Record online: 23 MAR 2017 | DOI: 10.1002/asia.201700399

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      Up the junction: A non-fullerene acceptor, SCPDT-PDI4, composed of perylenediimide (PDI) and a spiro core of 4,4’-spirobi[cyclopenta[2,1-b;3,4-b’]dithiophene] (SCPDT), has been developed. SCPDT-PDI4 exhibits a unique 3D structure and isotropic charge transport properties. Organic solar cells based on SCPDT-PDI4 and a donor polymer of poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b’]di-thiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2–6-diyl)] PTB7-Th achieved a remarkable quantum efficiency of 7.11%, indicating SCPDT-PDI4 is a very promising non-fullerene acceptor for organic solar cells. More information can be found in the Communication by Fei Chen, Zongxiang Xu, Zhi-Kuan Chen, Wei Huang et al. (DOI: 10.1002/asia.201601741).

  9. Full Papers

    1. Photo-switching Properties

      Light-Controlled Release and Uptake of Zinc Ions in Solution by a Photochromic Terthiazole-Based Ligand

      Dr. Juliette Guérin, Dr. Anne Léaustic, Dr. Jérôme Berthet, Dr. Rémi Métivier, Dr. Régis Guillot, Prof. Stéphanie Delbaere, Prof. Keitaro Nakatani and Dr. Pei Yu

      Version of Record online: 22 MAR 2017 | DOI: 10.1002/asia.201700028

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      Photo-responsive zinc complex: The stability of the zinc complex is reversibly switched by the light-induced interconversion of the photochromic terthiazole-based ligand between its two isomeric states. Moreover, such a modulation is accompanied by a simultaneous fluorescence switching, offering thereby a convenient way to monitor the reaction.

  10. Communications

    1. Azahelicenes

      Azahelicenes from the Oxidative Photocyclization of Boron Hydroxamate Complexes

      Dr. Takashi Murase, Toru Suto and Honoka Suzuki

      Version of Record online: 22 MAR 2017 | DOI: 10.1002/asia.201700096

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      Azahelicenes: Aromatic hydroxamic acids were converted into azahelicenes by complexation with boron trifluoride etherate, followed by oxidative photocyclization. The nitrogen atom of the hydroxamate linker was thus directly embedded into the helicene core, which led to the facile formation of 5-aza[4]helicene in the most efficient manner reported so far.

  11. Full Papers

    1. Transfer Hydrogenation

      Chemoselective Hydrazine-mediated Transfer Hydrogenation of Nitroarenes by Co3O4 Nanoparticles Immobilized on an Al/Si-mixed Oxide Support

      P. Linga Reddy, Mohit Tripathi, Dr. R. Arundhathi and Prof. Diwan S. Rawat

      Version of Record online: 22 MAR 2017 | DOI: 10.1002/asia.201700025

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      Providing great support: Co3O4 nanoparticles were successfully impregnated on porous alumina–silica. The supported catalyst exhibited a high catalytic activity and chemoselectivity for the hydrazine-mediated transfer hydrogenation of nitroarenes.

    2. Arylation

      C−H Direct Arylated 6H-Indolo[2,3-b]quinoxaline Derivative as a Thickness-Dependent Hole-Injection Layer

      Dai Dong, Da Fang, Hairong Li, Caixia Zhu, Prof. Xianghua Zhao, Dr. Jiewei Li, Dr. Lingzhi Jin, Prof. Linghai Xie, Lin Chen, Prof. Jianfeng Zhao, Prof. Hongmei Zhang and Prof. Wei Huang

      Version of Record online: 22 MAR 2017 | DOI: 10.1002/asia.201700112

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      The hole truth: A symmetrical 6H-indolo[2,3-b]quinoxaline derivative containing a bridged tetrafluoro-p-phenylene is as an effective hole-injection layer material in organic light-emitting devices (see figure).

  12. Cover Pictures

    1. You have free access to this content
      Stimulus-Responsive Short Peptide Nanogels for Controlled Intracellular Drug Release and for Overcoming Tumor Resistance

      Linna Lyu, Dr. Fang Liu, Dr. Xiaoyong Wang, Ming Hu, Jing Mu, Haolun Cheong, Prof. Dr. Gang Liu and Prof. Dr. Bengang Xing

      Version of Record online: 22 MAR 2017 | DOI: 10.1002/asia.201700163

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      Overcoming resistance: Multidrug resistance (MDR) remains a major problem for effective chemotherapy. In this study, a smart stimulus-responsive self-assembled system (PD/VER nanogel), formed from a short peptide-Dox prodrug (PD) and the P-glycoprotein inhibitor Verapamil (VER), was successfully developed for overcoming MDR. Such inhibitor-encapsulated nanogels could greatly enhance the accumulation of drugs in resistant cancer cells, thereby effectively reversing tumor resistance. More information can be found in the Full Paper by Fang Liu, Bengang Xing et al. (DOI: 10.1002/asia.201601704).

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      Coordination-Driven Dimerization of Zinc Chlorophyll Derivatives Possessing a Dialkylamino Group

      Hiroaki Watanabe, Yusuke Kamatani and Prof. Dr. Hitoshi Tamiaki

      Version of Record online: 22 MAR 2017 | DOI: 10.1002/asia.201700251

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      Coordinated movements: A zinc chlorophyll-a derivative possessing a dimethylamino group at the C31 position showed red-shifted visible absorption and intensified exciton-coupling circular dichroism (CD) spectra at room temperature owing to its dimer formation via coordination to the central zinc by the 31-N atom, whereas its analogs bearing 31-ethylmethylamino/diethylamino groups did not. The difference was dependent on the steric factor of the substituents in the tertiary amino group, in which an increase of the carbon numbers on the N atom reduced the intermolecular N⋅⋅⋅Zn coordination. UV/Vis, CD, and 1H NMR spectroscopic analyses including DOSY measurements revealed that Zn-1 formed closed-type dimers via an opened dimer by single-to-double axial coordination with an increase in concentration and a temperature decrease in CH2Cl2. More information can be found in the Full Paper by Hitoshi Tamiaki et al. (DOI: 10.1002/asia.201700015).

  13. Communications

    1. Electroluminescence

      Efficient Blue Electroluminescence from a Single-layer Organic Device Composed Solely of Hydrocarbons

      Tomoo Izumi, Dr. Yi Tian, Dr. Koki Ikemoto, Asami Yoshii, Dr. Takashi Koretsune, Dr. Ryotaro Arita, Dr. Hiroshi Kita, Dr. Hideo Taka, Dr. Sota Sato and Prof. Hiroyuki Isobe

      Version of Record online: 21 MAR 2017 | DOI: 10.1002/asia.201700198

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      Fifty-two years after the first detection of a faint blue emission, intense blue electroluminescence was now emitted from a thin organic layer composed solely of hydrogen and carbon atoms. These macrocyclic hydrocarbon molecules exhibit electroluminescence on par with multi-element materials of state-of-the-art devices.

    2. Carbon Nitride Nanosheets

      Mini-Sized Carbon Nitride Nanosheets with Double Excitation- and pH-Dependent Fluorescence Behaviors for Two-Photon Cell Imaging

      Jinhua Liu, Duoduo Zhao, Lin Li, Minrui Weng, Chengwu Zhang, Shiyu Zhang, Jixin Zhu, Yong Feng, Kaimin Shih and Wei Huang

      Version of Record online: 21 MAR 2017 | DOI: 10.1002/asia.201700201

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      How to keep clean sheets: Uniform mini-sized carbon nitride nanosheets (CNNSs) are fabricated by hydrothermal carbonization of single polyethyleneimine precursor. Owing to the unique structure features of tunable size, good hydrophilicity, abundant active sites and low toxicity, CNNSs show double excitation- and pH-dependent fluorescence behaviors, as well as two-photon fluorescence imaging in live cells.

  14. Full Papers

    1. Porous Solid Polyelectrolytes

      Towards Organic Zeolites and Inclusion Catalysts: Heptazine Imide Salts Can Exchange Metal Cations in the Solid State

      Dr. Aleksandr Savateev, Sergey Pronkin, Dr. Marc Georg Willinger, Prof. Dr. Markus Antonietti and Dr. Dariya Dontsova

      Version of Record online: 20 MAR 2017 | DOI: 10.1002/asia.201700209

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      Worth its salt: A variety of heptazine imide salts and a free base can be easily prepared by a simple ion exchange starting from the synthesized potassium derivative. Thus, various mono- and bivalent cations can be incorporated in the structure that resembles the behavior of zeolites. The photocatalytic activity in visible-light-driven hydrogen evolution is shown to depend on the nature of the introduced cation and reaches its maximum in the case of the Mg-salt.

    2. Spirobisiloles

      Silole Silylene Route to NHC-Stabilized Fused 1-Silabicycles and 1,1′-Spirobisiloles

      Tianhao Li, Jianying Zhang and Prof. Chunming Cui

      Version of Record online: 20 MAR 2017 | DOI: 10.1002/asia.201700050

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      Si-la-bi-cy-cles: Reaction of the NHC-stabilized silole silylene 1 with internal acetylenes resulted in the formation of NHC-stabilized 1-silabicyclo[3.2.0]hepta-1,3,6-trienes and 1,1′-spirobisiloles depending on the reaction conditions and stoichiometry.

    3. Enzyme-capped Mesoporous Silica Nanoparticles

      Acetylcholinesterase-capped Mesoporous Silica Nanoparticles Controlled by the Presence of Inhibitors

      Lluís Pascual, Dr. Sameh El Sayed, Dr. María D. Marcos, Prof. Ramón Martínez-Máñez and Dr. Félix Sancenón

      Version of Record online: 16 MAR 2017 | DOI: 10.1002/asia.201700031

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      To enzyme cap it all: Mesoporous silica nanoparticles capped with acetylcholinesterase enzyme were prepared and characterized. The enzyme was detached from the surface of nanoparticles in the presence of its inhibitors with a subsequent fluorophore release.

  15. Communications

    1. Heteroatom-functionalized Benzenes

      Efficient Synthesis of 1,4-Bis-heteroatom-substituted Tetraselanylbenzenes via 1,4-Dilithiation of Hexaselanylbenzene and Investigation on Their Electronic Properties

      Masahiro Fujita, Dr. Shunsuke Furukawa and Prof. Dr. Masaichi Saito

      Version of Record online: 16 MAR 2017 | DOI: 10.1002/asia.201700164

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      Tuning σ-type orbital interactions: Bis-heteroatom-substituted benzenes 5 bearing various heteroatom functionalities were synthesized via the dilithiation of hexaselanylbenzene 1. The 77Se NMR, cyclic voltammetry and theoretical studies revealed that the electronic properties of 5 change depending on the heteroatom functionalities.

  16. Full Papers

    1. Bridged Polysilsesquioxanes

      Lanthanide(III)-Based Multicolor Luminescent Hybrid Gel for Amine Sensing

      Caixia Liu, Tianren Wang, Daqing Yang, Dr. Zhiqiang Li and Prof. Dr. Huanrong Li

      Version of Record online: 14 MAR 2017 | DOI: 10.1002/asia.201700026

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      Show your true colors! Lanthanide-containing bridged polysilsesquioxanes gels with tunable emission colors have been successfully prepared (see figure). The yellow-colored emission of the gel can serve as an effective ratiometric luminescent sensor for distinguishing amines with lower pKa (<5) from those with higher pKa (>9).

    2. Hybrid Nanocrystals

      Poly(p-vinylbenzoic acid)-block-polystyrene Self-assembled Structures as Templates in the Synthesis of ZIF-8

      Prof. Yongfang Yang, Hua Li, Yue Zhang, Prof. Hefang Wang, Lidong Xu and Prof. Hanying Zhao

      Version of Record online: 14 MAR 2017 | DOI: 10.1002/asia.201700011

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      The new zif on the block: Self-assembled supramolecular structures of poly(p-vinylbenzoic acid)-block-polystyrene (PVBA-b-PS) were prepared in selective solvents and used as templates in the synthesis of ZIF-8 nanocrystals. PVBA-b-PS/ZIF-8 composites showed high catalytic performance in the Knoevenagel condensation reaction at room temperature.

    3. Molecular Rotors

      Double-Stranded Helical Oligomers Covalently Bridged by Rotary Cyclic Boronate Esters

      Prof. Hiroki Iida, Kenji Ohmura, Ryuta Noda, Dr. Soichiro Iwahana, Prof. Hiroshi Katagiri, Prof. Naoki Ousaka, Taku Hayashi, Dr. Yuh Hijikata, Prof. Stephan Irle and Prof. Eiji Yashima

      Version of Record online: 14 MAR 2017 | DOI: 10.1002/asia.201700162

      Thumbnail image of graphical abstract

      The helices are in motion: Novel double-stranded helices covalently bridged by two cyclic boronate esters were prepared by simply mixing two complementary dimer strands bearing diethyl boronates and diols. A rotational motion of the encased cyclic boronate ester units can take place simultaneously with helix-inversion of the double-stranded helical framework, thus providing a unique molecular rotor that undergoes dual rotary and inverting (twisting) motions.

    4. Organic Light-Emitting Diodes

      Efficient Color-Tunable Copper(I) Complexes and Their Applications in Solution-Processed Organic Light-Emitting Diodes

      Gary Kwok-Ming So, Dr. Gang Cheng, Dr. Jian Wang, Dr. Xiaoyong Chang, Dr. Chi-Chung Kwok, Prof. Hongxing Zhang and Prof. Chi-Ming Che

      Version of Record online: 10 MAR 2017 | DOI: 10.1002/asia.201700081

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      OLED School Reggae: The emission color of dppnc- and neocuproine-based CuI complexes are tuned from green to deep red via rational modification of the neocuproine ligand structure. EQE of 15.20 % and a current efficiency of 48.15 cd A−1 at 1000 cd m−2 are achieved in the green-emitting device with Cu(dppnc)-G. A maximum EQE of 10.17 % and a maximum electroluminescent peak of 631 nm are achieved in the red device based on Cu(dppnc)-R.

    5. Jumping Crystals

      Jumping Crystals of Pyrene Tweezers: Crystal-to-Crystal Transition Involving π/π-to-CH/π Assembly Mode Switching

      Yoshiki Shibuya, Dr. Yoshimitsu Itoh and Prof. Dr. Takuzo Aida

      Version of Record online: 8 MAR 2017 | DOI: 10.1002/asia.201700083

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      Jumping tweezers: Crystalline molecular tweezers with pyrenyl blades have been developed, and exhibited a vigorous jumping event upon heating via a crystal-to-crystal transition involving a π/π-to-CH/π assembly mode switching of pyrene tetrad. Different from reported jumping crystals, our crystal jumps with the release of CHCl3 molecules as inclusion solvent.

    6. Structure–Activity Relationships

      Superlight and Superflexible Three-Dimensional Semiconductor Frameworks A(X≡Y)4 (A=Si, Ge; X/Y=C, B, N) with Tunable Optoelectronic and Mechanical Properties from First-Principles

      Dr. Xinrui Cao, Dr. Xiao-Fei Li and Prof. Dr. Zi-Zhong Zhu

      Version of Record online: 7 MAR 2017 | DOI: 10.1002/asia.201700064

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      Bring on the subs! Framework materials of the type A(X≡Y)4(A=Si, Ge; X/Y=C, B, N) possess superlight, superflexible, incompressible mechanical properties and have strong absorption in the UV region (see figure). These materials show great potential for use in the design of UV optoelectronic devices in complex environments.

    7. Supramolecular Chemistry

      Rationally Developed Organic Salts of Tolfenamic Acid and Its β-Alanine Derivatives for Dual Purposes as an Anti-Inflammatory Topical Gel and Anticancer Agent

      Rumana Parveen, Bommagani Sravanthi and Prof. Dr. Parthasarathi Dastidar

      Version of Record online: 6 MAR 2017 | DOI: 10.1002/asia.201700049

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      Two-in-one gels: A new series of primary ammonium monocarboxylate salts of a nonsteroidal anti-inflammatory drug, namely, tolfenamic acid, and its β-alanine derivatives were generated. Supramolecular topical gels developed from these simple organic salts displayed both anti-inflammatory and anticancer properties.

    8. Oxidative C−C Coupling

      Transition-metal-free Chemoselective Oxidative C−C Coupling of the sp3 C−H Bond of Oxindoles with Arenes and Addition to Alkene: Synthesis of 3-Aryl Oxindoles, and Benzofuro- and Indoloindoles

      Moh. Sattar, Vandana Rathore, Ch. Durga Prasad and Dr. Sangit Kumar

      Version of Record online: 2 MAR 2017 | DOI: 10.1002/asia.201601647

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      I′m so free: A transition-metal (TM)-free and halogen-free NaOtBu-mediated oxidative cross-coupling between the sp3 C−H bond of oxindoles and an sp2 C−H bond of nitroarenes has been developed to access 3-aryl substituted and 3,3-aryldisubstituted oxindoles in DMSO at room temperature with a short reaction time. The synthesized 3-oxindoles were further transformed into advanced heterocycles: benzofuroindoles, indoloindoles, and substituted indoles.

  17. Communications

    1. Dihydrogen Splitting

      Dihydrogen Splitting Using Dialkylsilylene-Based Frustrated Lewis Pairs

      Zhaowen Dong, Prof. Dr. Zhifang Li, Xupeng Liu, Chenting Yan, Ningka Wei, Prof. Dr. Mitsuo Kira and Prof. Dr. Thomas Müller

      Version of Record online: 1 MAR 2017 | DOI: 10.1002/asia.201700143

      Thumbnail image of graphical abstract

      Splitting up based on frustration: Amphoteric dialkylsilylene 5 that forms frustrated Lewis pairs (FLPs) with either a Lewis acid or base splits dihydrogen at low temperatures in hexane giving the corresponding dihydrosilane 10 in high yields.

  18. Full Papers

    1. Oligogermanes

      Molecular Oligogermanes and Related Compounds: Structure, Optical and Semiconductor Properties

      Dr. Kirill V. Zaitsev, Dr. Viktor A. Tafeenko, Dr. Yuri F. Oprunenko, Anastasia V. Kharcheva, Zhaisan Zhanabil, Dr. Yerlan Suleimen, Dr. Kevin Lam, Dr. Vladimir B. Zaitsev, Dr. Anna V. Zaitseva, Dr. Galina S. Zaitseva and Prof. Sergey S. Karlov

      Version of Record online: 28 FEB 2017 | DOI: 10.1002/asia.201700151

      Thumbnail image of graphical abstract

      Semiconducting molecular oligogermanes: A series of molecular catenated group 14 derivatives was obtained and their structure, optical (UV/Vis absorbance, luminescence) and electrochemical properties were studied. A band gap of about 3.3 eV was measured for such compounds, indicating that these molecules have semiconductor properties.

    2. Diazaporphyrin Dimers

      Nitrogen-Bridged Metallodiazaporphyrin Dimers: Synergistic Effects of Nitrogen Bridges and meso-Nitrogen Atoms on Structure and Properties

      Masahiro Kawamata, Takuma Sugai, Prof. Dr. Mao Minoura, Yasuhisa Maruyama, Prof. Dr. Ko Furukawa, Cole Holstrom, Prof. Dr. Victor N. Nemykin, Prof. Dr. Haruyuki Nakano and Prof. Dr. Yoshihiro Matano

      Version of Record online: 28 FEB 2017 | DOI: 10.1002/asia.201700204

      Thumbnail image of graphical abstract

      Planar and twisted dimers of diazaporphyrin: NH-bridged and pyrazine-fused 5,15-diazaporphyrin dimers have been prepared from 3-amino-5,15-diazaporphyrins. The synergistic effects of the nitrogen bridges and meso-nitrogen atoms played major roles in enhancing the light-harvesting properties and delocalization of an electron spin over the entire π-skeletons of the diazaporphyrin dimers.

    3. Dimerization

      Coordination-Driven Dimerization of Zinc Chlorophyll Derivatives Possessing a Dialkylamino Group

      Hiroaki Watanabe, Yusuke Kamatani and Prof. Dr. Hitoshi Tamiaki

      Version of Record online: 22 FEB 2017 | DOI: 10.1002/asia.201700015

      Thumbnail image of graphical abstract

      Coordinated movements: Synthetic zinc chlorophyll derivative Zn-1 possessing a dimethylamino group at the C31 position dimerized in CH2Cl2 by one-by-one coordination to give J-type opened-to-closed dimers. These dimers were partially π-overlapped along the y-axis with a red-shifted Qy band, depending on concentration and temperature.

  19. Communications

    1. Organic Solar Cells

      High-Performance Organic Solar Cells Based on a Non-Fullerene Acceptor with a Spiro Core

      Hua Sun, Po Sun, Dr. Cong Zhang, Dr. Yingguo Yang, Dr. Xingyu Gao, Dr. Fei Chen, Dr. Zongxiang Xu, Prof. Zhi-Kuan Chen and Prof. Wei Huang

      Version of Record online: 7 FEB 2017 | DOI: 10.1002/asia.201601741

      Thumbnail image of graphical abstract

      Up the junction: Bulk heterojunction (BHJ) solar cells based on PTB7-Th:SCPDT-PDI4 with 2 % DIO additive show a high performance with a power conversion efficiency (PCE) up to 7.11 % (PTB7-Th=poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl)], SCPDT=4,4′-spirobi[cyclopenta[2,1-b;3,4-b′]dithiophene], PDI=perylenediimide, DIO=1,8-diiodooctane).

  20. Full Papers

    1. Stimulus-responsive Nanogels | Very Important Paper

      Stimulus-Responsive Short Peptide Nanogels for Controlled Intracellular Drug Release and for Overcoming Tumor Resistance

      Linna Lyu, Dr. Fang Liu, Dr. Xiaoyong Wang, Ming Hu, Jing Mu, Haolun Cheong, Prof. Dr. Gang Liu and Prof. Dr. Bengang Xing

      Version of Record online: 2 FEB 2017 | DOI: 10.1002/asia.201601704

      Thumbnail image of graphical abstract

      Strategy to overcome resistance: A smart stimulus-responsive self-assembled system (PD/VER nanogel) from a short peptide-Dox conjugate and P-glycoprotein inhibitor (Verapamil) has been developed for controlled drug release and simultaneous inhibition of the P-glycoprotein function to reverse multidrug resistance in cancer cells. This novel system provides a useful strategy to overcome drug resistance for improved antitumor treatment.

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