Macromolecular Rapid Communications

Cover image for Vol. 34 Issue 14

July 25, 2013

Volume 34, Issue 14

Pages 1113–1185

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      Macromol. Rapid Commun. 14/2013 (page 1113)

      Suntharavathanan Mahalingam and Mohan Edirisinghe

      Version of Record online: 17 JUL 2013 | DOI: 10.1002/marc.201370045

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      Front Cover: A novel rotating pressurized device is invented for the ambient temperature production of polymer nanofibers in a commercially-attractive way. The method involves a simple rotating vessel kept under pressure. The fiber diameter, length, and size distribution can be tailored to suit and the process has many advantages over conventional methods, e.g., it does not require the high electric fields used in electrospinning. More details can be found in the article by S. Mahalingam and M. Edirisinghe* on page 1134.

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    4. Contents
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    1. Macromol. Rapid Commun. 14/2013

      Version of Record online: 17 JUL 2013 | DOI: 10.1002/marc.201370046

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Review
    6. Communications
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  4. Review

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      CO2-Responsive Polymers (pages 1118–1133)

      Shaojian Lin and Patrick Theato

      Version of Record online: 31 MAY 2013 | DOI: 10.1002/marc.201300288

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      CO2-responsive polymers receive enormous attention due to CO2 as a “green” trigger. This Review highlights the recent progress in this field. The designs of molecular structures, underlying mechanisms, and potential applications of CO2-responsive polymers are analyzed. Possible future developments and perspectives of CO2-responsive polymers are also discussed.

  5. Communications

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    4. Contents
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      Forming of Polymer Nanofibers by a Pressurised Gyration Process (pages 1134–1139)

      Suntharavathanan Mahalingam and Mohan Edirisinghe

      Version of Record online: 10 JUN 2013 | DOI: 10.1002/marc.201300339

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      A method is invented for the preparation of polymer nanofibers. The size distribution of the fibers can be tailored to suit. Using calculations where necessary, an explanation is given of the physical phenomenon of the new process which is also very competitive in comparison with the existing conventional methods, in particular yield and fiber size control.

    2. Chiral Amplification during Asymmetric-Induced Copolymerization of Phenylacetylenes with Tight Cis-Cisoidal Main Chains (pages 1140–1144)

      Lijia Liu, Kazuomi Mottate, Geng Zhang, Toshiki Aoki, Takashi Kaneko and Masahiro Teraguchi

      Version of Record online: 27 MAY 2013 | DOI: 10.1002/marc.201300318

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      The efficiency of chiral amplification during the asymmetric-induced copolymerization of achiral and chiral phenylacetylenes with two hydroxyl groups is enhanced due to the tight helical cis-cisoidal conformations maintained by making intramolecular hydrogen bonds between the hydroxyl groups in copoly(phenylacetylene)s. The closer spatial position between the chiral pendant groups in the cis-cisoidal polyacetylene can control the helical sense more efficiently.

    3. Stable Single-Photon Emission by Quantum Dot/Polymer Hybrid Particles (pages 1145–1150)

      Carla Negele, Johannes Haase, Arne Budweg, Alfred Leitenstorfer and Stefan Mecking

      Version of Record online: 7 JUN 2013 | DOI: 10.1002/marc.201300327

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      A method to synthesize quantum dot/polymer hybrid particles is reported showing a significant increase in stability and single-photon emission compared with bare quantum dots. The technique is based on miniemulsion polymerization and the reproducible synthesis of high-quality quantum dots. The well-centered embedding of single quantum dots is shown via transmission electron microscopy, second-order photon correlation measurements, and long-term spectral analysis.

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      Synthesis of π-Conjugated Polymer Consisting of Pyrrole and Fluorene Units by Ru-Catalyzed Site-Selective Direct Arylation Polycondensation (pages 1151–1156)

      Wei Lu, Junpei Kuwabara and Takaki Kanbara

      Version of Record online: 31 MAY 2013 | DOI: 10.1002/marc.201300303

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      Since the introduction of 2-pyrimidinyl substituent as a directing group into pyrrole induces the ortho-metalation reaction, the polycondensation of 1-(2-pyrimidinyl)pyrrole with 2,7-dibromo-9,9-dioctylfluorene via Ru-catalyzed direct arylation proceeds site selectively at the α-position of pyrrole unit without the protection of the β-position to give the corresponding conjugated polymer with well-defined linkages.

    5. Fluorene-Based Co-polymer with High Hole Mobility and Device Performance in Bulk Heterojunction Organic Solar Cells (pages 1157–1162)

      Darren C. Watters, Hunan Yi, Andrew J. Pearson, James Kingsley, Ahmed Iraqi and David Lidzey

      Version of Record online: 5 JUN 2013 | DOI: 10.1002/marc.201300258

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      A novel low bandgap, fluorene-based polymer with a soluble benzothiadiazole moiety is synthesized and presented. By including additional thiophenes, the optical bandgap is reduced. Initial studies show good solubility and hole mobility. Bulk heterojunction devices realize efficiencies up to 6.2% without the need for a solvent additive or thermal annealing treatment.

    6. Anthracene-Containing Wide-Band-Gap Conjugated Polymers for High-Open-Circuit-Voltage Polymer Solar Cells (pages 1163–1168)

      Xue Gong, Cuihong Li, Zhen Lu, Guangwu Li, Qiang Mei, Tao Fang and Zhishan Bo

      Version of Record online: 6 JUN 2013 | DOI: 10.1002/marc.201300299

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      Two anthracene-containing donor–acceptor alternating polymers (P1 and P2) possess wide band gaps of about 2.12 eV. Polymer solar cells with P1:PC71BM as the active layer demonstrate a PCE of 2.23% with a high Voc of 0.96 V and P2:PC71BM blend-based solar cells exhibit a PCE of 1.42% with a comparable Voc of 0.89 V.

    7. Thermoresponsive Organic–Inorganic Hybrid Large-Compound Vesicles (pages 1169–1173)

      Bo Peng and Yongming Chen

      Version of Record online: 6 JUN 2013 | DOI: 10.1002/marc.201300311

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      Gelated large-compound vesicles (LCVs) with thermoresponsive size and permeability are obtained through self-assembly and gelation of poly(ethylene oxide)-block-poly[N-isopropylacrylamide-random-3-(trimethoxysilyl)propyl methacrylate] [PEO-b-P(NIPAM-r-TMPM)] in DMF-water mixture. When the temperature is elevated, the LCVs shrink and their permeability is enhanced because of the thermo-induced channel formation on their membranes.

    8. pH-Switchable Macroscopic Assembly through Host–Guest Inclusion (pages 1174–1180)

      Qi-Juan Yuan, Yi-Fu Wang, Jian-Hu Li, Bang-Jing Li and Sheng Zhang

      Version of Record online: 7 JUN 2013 | DOI: 10.1002/marc.201300289

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      A novel pH-switchable macroscopic self-assembly is developed using the pH-sensitive inclusion behavior between α-CD and DETA groups, which can adhere together at pH 11.5 and separate when the pH is 7.0. This pH-controlled adhesion and dissociation shows a good reversibility. Furthermore, the host and guest polymers have good biocompatibility.

    9. Synthesis and Characterization of Functional Thienyl-Phosphine Microporous Polymers for Carbon Dioxide Capture (pages 1181–1185)

      Xianghui Chen, Shanlin Qiao, Zhengkun Du, Yuanhang Zhou and Renqiang Yang

      Version of Record online: 12 JUN 2013 | DOI: 10.1002/marc.201300328

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      Phosphorus-functionalized microporous polymers are designed by introducing polar organic groups and electron-rich heterocycles to obtain attractive carbon dioxide capacity. The polymers show high isosteric heat and relative high gas selectivity. Additionally, the polymer containing P=O groups shows greater gas uptake than that containing P=S groups at the same pressure and temperature.

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