Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 53 Issue 13

1 July 2015

Volume 53, Issue 13

Pages i–iv, 1533–1628

  1. Cover Image

    1. Top of page
    2. Cover Image
    3. Articles
    1. You have free access to this content
      Cover Image, Volume 53, Issue 13 (pages i–ii)

      Article first published online: 19 MAY 2015 | DOI: 10.1002/pola.27677

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      The cover image shows the electrochromic properties of a donor–acceptor type conjugated copolymer containing silafluorene and benzotriazole. On page 1541 (DOI: 10.1002/pola.27625), Ali Cirpan and co-workers describe how these polymers are promising materials for both electrochromic devices and polymer solar cell applications. All of the polymers are ambipolar and multichromic. Optical and electrochemical studies of the polymers show that these polymers can also be utilized in photovoltaic applications. Power conversion efficiency of the polymer solar cell reached 2.57%.

    2. You have free access to this content
      Cover Image, Volume 53, Issue 13 (pages iii–iv)

      Article first published online: 19 MAY 2015 | DOI: 10.1002/pola.27678

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      On page 1548 (DOI: 10.1002/pola.27594), Hunaid Nulwala and co-workers describe the use of versatile photo-thiol-ene click chemistry to prepare liquid prepolymer mixtures containing poly(thio-siloxane) and poly(ethylene) oxide that are easily photopolymerized to form free standing, tunable cross-linked films. These materials show promise in many applications, such as stem cell carrier media, or gas separation membranes.

  2. Articles

    1. Top of page
    2. Cover Image
    3. Articles
    1. Synthesis, characterization, and photovoltaic properties of dithienylbenzobisazole-dithienylsilole copolymers (pages 1533–1540)

      Achala Bhuwalka, Monique D. Ewan, Jared F. Mike, Moneim Elshobaki, Brandon Kobilka, Sumit Chaudhary and Malika Jeffries-EL

      Article first published online: 28 MAR 2015 | DOI: 10.1002/pola.27603

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      Three donor-acceptor copolymers based on a donor-acceptor-donor triad of either cis-benzbisoxazole, trans-benzobisoxazole or trans-benzobisthiazole and dioctyl-dithieno-[2,3-b:2',3'-d]silole were synthesized. The impact of these structural modifications on the optical, electrochemical, and morphological properties of the polymers were investigated. The performance of these copolymers in photovoltaic cells is also reported.

    2. Spotlight Article

      Silafluorene-based polymers for electrochromic and polymer solar cell applications (pages 1541–1547)

      Ozan Erlik, Naime A. Unlu, Gonul Hizalan, Serife O. Hacioglu, Seda Comez, Esra D. Yildiz, Levent Toppare and Ali Cirpan

      Article first published online: 28 MAR 2015 | DOI: 10.1002/pola.27625

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      Four new silafluorene and benzotriazole bearing conjugated copolymers were synthesized. These polymers are promising both for electrochromic devices and polymer solar cell applications. All of the polymers are ambipolar and multichromic. Power conversion efficiency of the polymer solar cell reached 1.75% for PTBTSiF, 1.55% for PSBSSiF, 2.57% for PBTBTSiF and 1.82% for PBSBSSiF. The hole mobilities of the polymers are estimated through space charge limited current (SCLC) model. PBTBTSiF has the highest hole mobility as 2.44x10−3 cm2/Vs.

    3. Crosslinked poly(ethylene oxide) containing siloxanes fabricated through thiol-ene photochemistry (pages 1548–1557)

      Victor A. Kusuma, Elliot A. Roth, William P. Clafshenkel, Steven S. Klara, Xu Zhou, Surendar R. Venna, Erik Albenze, David R. Luebke, Meagan S. Mauter, Richard R. Koepsel, Alan J. Russell, David Hopkinson and Hunaid B. Nulwala

      Article first published online: 16 MAR 2015 | DOI: 10.1002/pola.27594

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      Crosslinked homogeneous amphiphilic polymer films containing poly(ethylene oxide) and polysiloxane functionality can be readily fabricated using UV curing. The films show promise in applications requiring biocompatibility and are also promising as membranes for industrial CO2 separation.

    4. Novel pendent thiophene side-chained benzodithiophene for polymer solar cells (pages 1558–1566)

      Ruiying Sheng, Qian Liu, Manjun Xiao, Chunyang Gu, Tong Hu, Junzhen Ren, Mingliang Sun and Renqiang Yang

      Article first published online: 5 MAR 2015 | DOI: 10.1002/pola.27585

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      Two novel pendent thiophene (2-butyl-5-octylthiophene) side-chained BDT- and TPD- based polymers were successfully synthesized. BDT with pendent thiophene and ethylhexyl (EH) side-chained TPD-based polymer shows relatively low-lying HOMO energy level (−5.52 eV) with the help of some other side groups on copolymerization unit and nearly 1 V high open circuit voltage (VOC) which is the highest VOC achieved by BDT- and TPD-based polymers.

    5. Synthesis and characterization of thermoplastic elastomers with polyisobutylene and polyalloocimene blocks (pages 1567–1574)

      Attila L. Gergely and Judit E. Puskas

      Article first published online: 21 MAR 2015 | DOI: 10.1002/pola.27587

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      Polyisobutylene-based thermoplastic elastomers were successfully synthesized using a renewable monomer, alloocimene, to construct the glassy segments. Triblock and tetrablock copolymers are prepared by the sequential monomer addition technique using the butyl polymerization system (H2O/AlCl3 in MeCl at −95 °C). The new materials exhibit similar mechanical properties to thermoplastic elastomers with hard blocks of polystyrene and its derivatives, with the added advantage of using an inexpensive two-phase living cationic polymerization system. The structure–property relationships are also discussed.

    6. Facile preparation of highly conductive, flexible, and strong carbon nanotube/polyaniline composite films (pages 1575–1585)

      Hong-Mei Xiao, Wei-Dong Zhang, Li Na, Gui-Wen Huang, Yu Liu and Shao-Yun Fu

      Article first published online: 18 MAR 2015 | DOI: 10.1002/pola.27588

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      A highly conductive, flexible, and strong carbon nanotube/polyaniline composite film prepared via a facile solvent-evaporation has been obtained by a cold stretching. The maximum value of the composite conductivity (ca. 231 S/cm) in the stretching direction is achieved at the elastic limit stress. Meanwhile, the strength is moderately improved over that of the pure PANI film and the flexibility is maintained to a high degree by the addition of the 2 wt.% CNTs.

    7. Influence of 4-fluorophenyl pendants in thieno[3,4-b]thiophene-benzo[1,2-b:4,5-b′]dithiophene-based polymers on the performance of photovoltaics (pages 1586–1593)

      Tomoyuki Yamamoto, Tomoyuki Ikai, Shinji Katori, Takayuki Kuwabara, Katsuhiro Maeda, Tomoyuki Koganezawa, Kohshin Takahashi and Shigeyoshi Kanoh

      Article first published online: 19 MAR 2015 | DOI: 10.1002/pola.27589

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      Polymers consisting of benzo[1,2-b:4,5-b′]dithiophene and thieno[3,4-b]thiophene units, either fully or partially containing 4-fluorophenyl pendants, have been synthesized as electron donors for inverted-type polymer solar cells (PSCs). Incorporation of 4-fluorophenyl pendants into the polymers affected the frontier orbitals, the hole mobilities, crystallinity, orientation, and compatibility with an electron acceptor in the active layers. The incorporation of an appropriate number of 4-fluorophenyl pendants enhanced the power conversion efficiencies of the PSC devices from 2.25 to 3.96%.

    8. Functional dye as a comonomer in a water-soluble polymer (pages 1594–1599)

      Wenwen Zhang, Nelson R. Vinueza, Preeta Datta and Stephen Michielsen

      Article first published online: 28 MAR 2015 | DOI: 10.1002/pola.27592

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      An antimicrobial dye Rose Bengal has been incorporated into a water-soluble copolymer to achieve effective and durable properties. The final product has been characterized from aspects of the percentage of free dye percentage, solubility, and singlet oxygen production rate, which indicates an effective approach to make low cost, sustainable, and durable antimicrobial products by applying this polymer solution to various surfaces.

    9. Water-soluble cationic polypyrrole based probe for fluorometric and voltammetric detection of base pair mismatched oligonucleotides (pages 1600–1605)

      Jiangna Guo, Jie Zhao, Bin Wang and Feng Yan

      Article first published online: 16 MAR 2015 | DOI: 10.1002/pola.27595

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      The synthesized cationic polypyrrole, poly(N-(4-butyl-(1-methylimidazole)) pyrrole bromide) (PNBMIP-Br), was used for base pair mismatched oligonucleotides detection. The electrostatic attraction and fluorescence resonance energy transfer of PNBMIP-Br/DNA complexes resulted in an amplification and effective recognition of the fluorescence signals. Cyclic voltammogram was proved to be an effective method to distinguish ss-DNA and ds-DNA.

    10. Synthesis and characterization of polyaniline nanoparticles in phosphonic acid amphiphile aqueous micellar solutions for waterborne corrosion protection coatings (pages 1606–1616)

      F. X. Perrin, T. A. Phan and D. L. Nguyen

      Article first published online: 25 MAR 2015 | DOI: 10.1002/pola.27602

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      It is demonstrated that long-chain alkyl phosphonic acids are promising surfactants for the preparation of stable polyaniline dispersions with high potentials for application in corrosion protection. The high conductivity (3.6 S cm−1) and enhanced solubility is related to the formation of layered structure of PANI backbone separated by alkyl side chains of DPA. The excellent corrosion resistance of steel offered by DPA-PANI is due to the smart release of DPA when damage is produced on the surface of the coating.

    11. Spotlight Article

      Donor–acceptor semiconducting polymers based on pyromellitic diimide (pages 1617–1622)

      Ruvini S. Kularatne, Prakash Sista, Harsha D. Magurudeniya, Jing Hao, Hien Q. Nguyen, Michael C. Biewer and Mihaela C. Stefan

      Article first published online: 25 MAR 2015 | DOI: 10.1002/pola.27607

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      Three donor–acceptor polymers P1, P2, and P3 with N,N′-dodecylpyromellitic diimide as the electron-acceptor unit with three diethynyl-substituted donor monomers: 1,4-diethynyl-2,5-bis(octyloxy)benzene, 2,7-diethynyl-9,9-dioctyl-9H-fluorene, and 3,3′-didodecyl-5,5′-diethynyl-2,2′-bithiophene, were synthesized. In the presence of PC61BM acceptor, these three polymers undergo fluorescence quenching, indicating the intermolecular photo-induced charge transfer between the donor and the acceptor moieties.

    12. Poly(p-benzamide) having isopropyl-substituted chiral tri(ethylene glycol) side Chain: Synthesis and helical conformation (pages 1623–1628)

      Akihiro Yokoyama, Suguru Nakano, Tomoaki Saiki and Tsutomu Yokozawa

      Article first published online: 23 MAR 2015 | DOI: 10.1002/pola.27608

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      To increase the difference of stability between right- and left-handed helical structures, isopropyl-substituted tri(ethylene glycol) is used as a chiral side chain of N-substituted poly(p-benzamide). The target polymer is synthesized by chain-growth condensation polymerization. The circular dichroism study of the polymer reveals that the replacement of the methyl group with a bulkier isopropyl group at the side chain of poly(p-benzamide) increased the ratio of a one-handed helical structure.

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