Macromolecular Rapid Communications

Cover image for Vol. 33 Issue 8

April 23, 2012

Volume 33, Issue 8

Pages 621–709

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Communications
    1. Macromol. Rapid Commun. 8/2012 (page 621)

      Xiaopei Deng, Thomas W. Eyster, Yaseen Elkasabi and Joerg Lahann

      Article first published online: 13 APR 2012 | DOI: 10.1002/marc.201290025

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      Front Cover: Chemical vapor deposition is used to fabricate polymer coatings with bio-orthogonal functional groups for co-immobilization of adhesion peptides and growth factor. These surfaces may lead to novel biomedical coatings displaying combinations of heterovalent ligands. Further details can be found in the article by Xiaopei Deng, Thomas W. Eyster, Yaseen Elkasabi, and Joerg Lahann* on page 640.

  2. Back Cover

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Communications
    1. Macromol. Rapid Commun. 8/2012 (page 712)

      Jheng-Guang Li, Ruei-Bin Lin and Shiao-Wei Kuo

      Article first published online: 13 APR 2012 | DOI: 10.1002/marc.201290026

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      Back Cover: New amphiphic PE-PEO-PCL type triblock terpolymer as a single template can fabricate hierarchical mesoporous silica via the simple evaporation induced self-assembly method. Further details can be found in the article by Jheng-Guang Li, Ruei-Bin Lin, and Shiao-Wei Kuo* on page 678.

  3. Masthead

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Communications
    1. Macromol. Rapid Commun. 8/2012

      Article first published online: 13 APR 2012 | DOI: 10.1002/marc.201290027

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Communications
    1. Macromol. Rapid Commun. 8/2012 (pages 623–627)

      Article first published online: 13 APR 2012 | DOI: 10.1002/marc.201290024

  5. Communications

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Communications
    1. Fabrication of Transparent, Tough, and Conductive Shape-Memory Polyurethane Films by Incorporating a Small Amount of High-Quality Graphene (pages 628–634)

      Yong Chae Jung, Jin Hee Kim, Takuya Hayashi, Yoong Ahm Kim, Morinobu Endo, Mauricio Terrones and Mildred S. Dresselhaus

      Article first published online: 13 FEB 2012 | DOI: 10.1002/marc.201100674

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      A mechanically strong, electrically and thermally conductive, optically transparent shape-memory polyurethane composite is fabricated by introducing a small amount of geometrically large and highly crystalline graphene as a filler. Homogeneously dispersed graphene enables polyurethane to have a high shape recovery force of 1.8 MPa cm−3.

    2. Thermal and Photochemical Crosslinking of Hyperbranched Polyphenylene With Organic Azides (pages 635–639)

      Robert Pötzsch and Brigitte Voit

      Article first published online: 9 FEB 2012 | DOI: 10.1002/marc.201100795

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      The first example of crosslinking (CL) hyperbranched polyphenylene in a thermal and in photochemical manner is demonstrated. An organic azide was added, which either reacts thermally with alkyne groups throughout a cycloaddition reaction or via nitrene addition to benzene rings upon photolysis of the azide groups. The CL process was investigated by dissolution studies, IR spectroscopy, and AFM.

    3. Bio-Orthogonal Polymer Coatings for Co-Presentation of Biomolecules (pages 640–645)

      Xiaopei Deng, Thomas W. Eyster, Yaseen Elkasabi and Joerg Lahann

      Article first published online: 21 FEB 2012 | DOI: 10.1002/marc.201100819

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      Polymer coatings with bio-orthogonal functional groups are developed for co-immobilization of adhesion peptide and growth factor. The coatings are generated by chemical vapor deposition polymerization, with both alkyne and pentafluorophenyl ester which are used to covalently tether the biomolecules. The biological activity of the co-immobilized biomolecules is demonstrated.

    4. Crosslinked Poly(ionic liquid) Nanoparticles: Inner Structure, Size, and Morphology (pages 646–651)

      Michael Koebe, Markus Drechsler, Jens Weber and Jiayin Yuan

      Article first published online: 13 FEB 2012 | DOI: 10.1002/marc.201100836

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      Crosslinked poly(ionic liquid) nanoparticles showed centric multilamellar vesicular inner structures by cryogenic transmission electron microscopy. Their size was found sensitive to the concentrations of monomer and crosslinker, the anion type and the foreign salt, but fairly inert to the polymerization temperature and initiator.

    5. Helical Polymer as Mimetic Enzyme Catalyzing Asymmetric Aldol Reaction (pages 652–657)

      Dongyue Zhang, Chonglei Ren, Wantai Yang and Jianping Deng

      Article first published online: 9 FEB 2012 | DOI: 10.1002/marc.201100826

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      Synthetic helical polymers containing pendent prolineamide moieties efficiently catalyze the asymmetric aldol reaction between cyclohexanone and p-nitrobenzaldehyde. Both the product yield and ee can be up to 80%. Helical structures in the copolymer backbones are indispensable for the asymmetric catalysis. An increase in helical structure content leads to better catalysis effects.

    6. Effects of Block Length in Copolymers Based on Regioregular Oligothiophenes Linked With Electron-Accepting Units (pages 658–663)

      Luozheng Zhang, Yue Zhang, Qingshuo Wei, Erjun Zhou, Chunhe Yang, Kazuhito Hashimoto and Keisuke Tajima

      Article first published online: 9 FEB 2012 | DOI: 10.1002/marc.201100827

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      O3HT–DPP with an alternating structure of regioregular O3HT and DPP accepting unit is synthesized. A broad light absorption across the visible range can be realized by tuning the length of O3HT. The photovoltaic efficiency of this copolymer (3.17%) is limited to a level similar to that of regioregular P3HT, which could be due to intrachain energy transfer.

    7. Synthesis of β-Cyclodextrin Containing Copolymer via “Click” Chemistry and Its Self-Assembly in the Presence of Guest Compounds (pages 664–671)

      Jianxiang Zhang, Kristin Ellsworth and Peter X. Ma

      Article first published online: 9 FEB 2012 | DOI: 10.1002/marc.201100814

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      The synthesis of β-cyclodextrin containing block copolymer via a “click” reaction is reported. The self-assembly of this newly synthesized copolymer in the presence of guest compounds can lead to the formation of core–shell structured nanoparticles. These assemblies can be employed as novel delivery vehicles for therapeutics.

    8. Magnetic Fe3O4-PS-Polyacetylene Composite Microspheres Showing Chirality Derived From Helical Substituted Polyacetylene (pages 672–677)

      Dong Liu, Ling Zhang, Mingkun Li, Wantai Yang and Jianping Deng

      Article first published online: 13 FEB 2012 | DOI: 10.1002/marc.201100776

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      Chiral magnetic Fe3O4-PS-polyacetylene composite microspheres were prepared from Fe3O4 NPs and helical substituted polyacetylene. The microspheres possessed both magneticity and optical activities and showed considerable chiral resolution ability. The combination of magneticity and macromolecular helicity-derived chirality in one single composite microsphere is successfully achieved

    9. Hierarchical Mesoporous Silica Fabricated from an ABC Triblock Terpolymer as a Single Template (pages 678–682)

      Jheng-Guang Li, Ruei-Bin Lin and Shiao-Wei Kuo

      Article first published online: 21 FEB 2012 | DOI: 10.1002/marc.201100857

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      The amphiphilic ABC-type triblock copolymer as a single template is able to fabricate hierarchical mesoporous silica via the simple evaporation-induced self-assembly method. This poly(ethylene-block-ethylene oxide-block-ϵ-caprolactone) (PE-PEO-PCL) triblock copolymer can be easily obtained through the simple ring opening polymerization method using the cheap and commercially available PE-PEO block copolymer as a macroinitiator.

    10. Solubilization of a π-Conjugating Hydrophobic Dendrimer in Aqueous Media (pages 683–687)

      Takane Imaoka, Makoto Katsurayama, Yoshinori Yamanoi, Hiroshi Nishihara and Kimihisa Yamamoto

      Article first published online: 9 FEB 2012 | DOI: 10.1002/marc.201100740

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      Hydrophobic dendrimers were successfully dissolved in an aqueous solution by specific surfactant molecules. The resulting micelles exhibited a significantly high encapsulation effect for the contained dendrimer core. The triplet-excited state lifetime of the zinc porphyrin core in the micelle was 50 times longer than that of dendrimer itself in THF.

    11. Ion-Specific Self-Assembly of Low-Dimension Aggregate Structures of Conjugated Polymer at Two-Phase Interface (pages 688–692)

      Chunjie Zhou, Nan Chen, Jien Yang, Huibiao Liu and Yuliang Li

      Article first published online: 9 FEB 2012 | DOI: 10.1002/marc.201100828

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      Cu2+-ion-specific assembly of π-conjugated polymer at oil–water interface is studied, taking advantage of the cooperatively coordinating ability of relatively hydrophilic glycol chains. Self-rolling of the strained ionic bilayer that is formed at the ethyl acetate–water interface leads to the formation of microtubes of polymer–Cu2+ complex, so as to minimize the surface energy.

    12. A Water-Soluble Polycarbonate With Dimethylamino Pendant Groups Prepared by Enzyme-Catalyzed Ring-Opening Polymerization (pages 693–697)

      Xiaojin Zhang, Mengmeng Cai, Zhenlin Zhong and Renxi Zhuo

      Article first published online: 21 FEB 2012 | DOI: 10.1002/marc.201100765

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      A water-soluble aliphatic polycarbonate with dimethylamino pendant groups, poly(2-dimethylaminotrimethylene carbonate) (PDMATC), is prepared via lipase-catalyzed ring-opening polymerization of 2-dimethylaminotrimethylene carbonate (DMATC). The carbonate monomer is prepared via aminomethylation and cyclization from serinol. It is not necessary to protect-deprotect the functional pendant groups, so the preparation processes are facile.

    13. Gelation on Heating of Supercooled Gelatin Solutions (pages 698–702)

      Nathanaël Guigo, Nicolas Sbirrazzuoli and Sergey Vyazovkin

      Article first published online: 8 FEB 2012 | DOI: 10.1002/marc.201100748

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      Aqueous gelatin solutions of low concentration can be cooled to form supercooled solutions without freezing and gelation. When heated at a slow constant heating rate, the supercooled solutions demonstrate an atypical process of gelation that has been characterized by regular and stochastically modulated differential scanning calorimetry as well as by isoconversional kinetic analysis.

    14. Design of Well-Defined Monofunctionalized Poly(3-hexylthiophene)s: Toward the Synthesis of Semiconducting Graft Copolymers (pages 703–709)

      Sébastien-Jun Mougnier, Cyril Brochon, Eric Cloutet, Guillaume Fleury, Henri Cramail and Georges Hadziioannou

      Article first published online: 21 FEB 2012 | DOI: 10.1002/marc.201100703

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      The successful design of well-defined mono-functionalized poly(3-hexylthiophene) (P3HT) with carboxylic acid, thiol, and acrylate as end groups is demonstrated. In addition, synthesis of various new semiconducting graft copolymers is achieved via grafting onto and grafting through methods and gives a promising future for the design of rod–coil graft copolymers.

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