Macromolecular Chemistry and Physics

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  1. A Generalized Packing Model for Bulk Crystalline Regioregular Poly(3-alkylthiophenes) with Extended Side Chains

    Anne Bohle, Dmytro Dudenko, Nils Koenen, Daniel Sebastiani, Sybille Allard, Ullrich Scherf, Hans Wolfgang Spiess and Michael Ryan Hansen

    Version of Record online: 20 JUL 2017 | DOI: 10.1002/macp.201700266

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    The crystalline form I of regioregular poly(3-alkylthiophenes) with extended side chains is shown to crystallize in the space group P21/c from a combination of solid-state NMR experiments and condensed-phase nucleus-independent chemical shift calculations.

  2. Condensed Mode Cooling for Ethylene Polymerization: Part IV. The Effect of Temperature in the Presence of Induced Condensing Agents

    Fabiana N. Andrade and Timothy F. L. McKenna

    Version of Record online: 20 JUL 2017 | DOI: 10.1002/macp.201700248

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    The effect of adding chemically inert alkanes to the reactor during gas phase polymerization of ethylene has a number of complex, often contradictory effects. One of these is that, at constant pressure of ethylene, increasing the reactor temperature in the presence of an induced condensing agent leads to a lower observable reaction rate.

  3. One-Step Spontaneous Formation of Dual Wrinkling on Uniform-Sized Microparticles Induced by Surface

    Jinsol Im, Dongik Yoo, Jihoon Kim, Sukeun Yoon and Kuk Young Cho

    Version of Record online: 19 JUL 2017 | DOI: 10.1002/macp.201700152

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    Dual wrinkling structure on the surface of uniform-sized biodegradable microparticles is prepared by using blends of hydrophobic polymer and amphiphilic block copolymer and by introducing dimple-forming organic phase change materials. Both labyrinthine and hexagonal dimple structures are spontaneously formed from the conventional microparticle fabrication procedure of the solvent-emulsion evaporation method.

  4. Conjugated Side Chain Tuning Effect of Indacenodithieno[3,2-b]thiophene and Fluoro-Benzothiadiazole-Based Regioregular Copolymers for High-Performance Organic Field-Effect Transistors

    Henry Opoku, Ji Young Lee, Keun Cho, Benjamin Nketia-Yawson, Bogyu Lim and Yong-Young Noh

    Version of Record online: 19 JUL 2017 | DOI: 10.1002/macp.201700225

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    Two regioregular indacenodithieno[3,2-b]thiophene and fluoro-benzothiadiazole-based donor–acceptor type copolymers with different conjugated side chains of hexyl-phenyl or hexyl-thienyl are synthesized to study the effects of the side chain on performance of organic field-effect transistors (OFETs). Top-gate/bottom-contact OFETs with a hexyl-thienyl substituted polymer show higher hole mobility up to 0.211 than 0.086 cm2 V−1 s−1 for the polymer with hexyl-phenyl side chains.

  5. Combining Staudinger Reductive Amination and Amidification for the Control of Surface Hydrophobicity and Water Adhesion by Introducing Heterobifunctional Groups: Post- and Ante-Approach

    Emna El Kout, Rawia Ben Trad, Mejda El Kateb, Mohammed Beji, Jean-Pierre Laugier, Guilhem Godeau, Frédéric Guittard and Thierry Darmanin

    Version of Record online: 19 JUL 2017 | DOI: 10.1002/macp.201700250

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    Here, using a Staudinger reductive amination and amidification, it is shown how bifunctional monomers can be prepared easily and can be used to control the surface morphology and hydrophobicity.

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