Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 54 Issue 6

15 March 2016

Volume 54, Issue 6

Pages i–iv, 727–870

  1. Cover Image

    1. Top of page
    2. Cover Image
    3. Issue Information - Cover Description
    4. Issue Information - Editorial Board
    5. Issue Information - Table of Contents
    6. Rapid Communication
    7. Articles
    1. Cover Image, Volume 54, Issue 6 (pages i–ii)

      Article first published online: 4 FEB 2016 | DOI: 10.1002/pola.28037

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      On page 735 (DOI: 10.1002/pola.27923), Fang Guo, Bai Wang, Hongwei Ma, Tingting Li, and Yang Li discuss the synthesis of Si–H-containing syndiotactic polystyrene by the direct polymerization of 4-vinyiphenyldimethylsilanol in the presence of a half-sandwich scandium catalyst system [(C5Me4SiMe3)Sc(CH2C6H4NMe2-o)2]/[Ph3C][B(C6F5)4]. Using this one-step, efficient hydrosilylation reaction, the perylene bisimide units were quantitatively linked to the Si–H-containing syndiotactic polystyrene backbone. The perylene bisimide units functionalized syndiotactic polystyrene exhibits liquid crystallinity, fluorescence, and electron transport properties.

    2. Cover Image, Volume 54, Issue 6 (pages iii–iv)

      Article first published online: 4 FEB 2016 | DOI: 10.1002/pola.28038

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      On page 750 (DOI: 10.1002/pola.27927), Luke Connal and co-workers report a range of simple self-assembly techniques to fabricate non-spherical polymer particles, where the surface composition and shape can be tuned through assembly conditions such as temperature and the choice of non-solvents. The scanning electron micrograph on the cover displays the unique faceted particles that can be synthesized by the self-assembly of amphiphilic polystyrene-b-poly(2-ethyl-2-oxazoline) block copolymers.

  2. Issue Information - Cover Description

    1. Top of page
    2. Cover Image
    3. Issue Information - Cover Description
    4. Issue Information - Editorial Board
    5. Issue Information - Table of Contents
    6. Rapid Communication
    7. Articles
    1. Issue Information - Cover Description (page 727)

      Article first published online: 4 FEB 2016 | DOI: 10.1002/pola.27831

  3. Issue Information - Editorial Board

    1. Top of page
    2. Cover Image
    3. Issue Information - Cover Description
    4. Issue Information - Editorial Board
    5. Issue Information - Table of Contents
    6. Rapid Communication
    7. Articles
    1. Issue Information - Editorial Board 1 (page 728)

      Article first published online: 4 FEB 2016 | DOI: 10.1002/pola.27830

    2. Issue Information - Editorial Board 2 (page 729)

      Article first published online: 4 FEB 2016 | DOI: 10.1002/pola.28036

  4. Issue Information - Table of Contents

    1. Top of page
    2. Cover Image
    3. Issue Information - Cover Description
    4. Issue Information - Editorial Board
    5. Issue Information - Table of Contents
    6. Rapid Communication
    7. Articles
  5. Rapid Communication

    1. Top of page
    2. Cover Image
    3. Issue Information - Cover Description
    4. Issue Information - Editorial Board
    5. Issue Information - Table of Contents
    6. Rapid Communication
    7. Articles
    1. Scandium-catalyzed synthesis of Si–H-containing syndiotactic polystyrene and its functionalized polymer carrying pendant perylene bisimide units (pages 735–739)

      Fang Guo, Bai Wang, Hongwei Ma, Tingting Li and Yang Li

      Article first published online: 13 OCT 2015 | DOI: 10.1002/pola.27923

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      Si–H-containing syndiotactic polystyrene is synthesized by the direct polymerization of 4-vinyiphenyldimethylsilanol in the presence of a half-sandwich scandium catalyst system [(C5Me4SiMe3)Sc(CH2C6H4NMe2-o)2]/[Ph3C][B(C6F5)4]. By the one-step efficient hydrosilylation reaction, the perylene bisimide units are quantitatively linked to the Si–H-containing syndiotactic polystyrene backbone. The perylene bisimide units functionalized syndiotactic polystyrene exhibits liquid crystallinity, fluorescence, and electron transporting properties.

  6. Articles

    1. Top of page
    2. Cover Image
    3. Issue Information - Cover Description
    4. Issue Information - Editorial Board
    5. Issue Information - Table of Contents
    6. Rapid Communication
    7. Articles
    1. Spotlight Article

      Visible light-induced thiol-ene reaction: A new strategy to prepare Α,ω-dithiol and Α,ω-divinyl telechelic polythiolether oligomers (pages 740–749)

      Wenchao Ma, Dong Chen, Lianying Liu, Yuhong Ma, Li Wang, Changwen Zhao and Wantai Yang

      Article first published online: 26 SEP 2015 | DOI: 10.1002/pola.27906

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      Both α,ω-dithiol- and α,ω-divinyl-terminated linear polythiolether oligomers are obtained by visible light induced thiol-ene chemistry in the presence of a fac-Ir(ppy)3 photoredox catalyst. Thereafter, a well-defined polymer (Mn=7700 g mol−1, PDI=1.67) is obtained by polyaddition of α,ω-dithiol- (Mn=1900 g mol−1, PDI=1.25) and α,ω-divinyl-terminated (Mn=2000 g mol−1, PDI=1.29) oligomers. The results demonstrate that as-prepared α,ω-dithiol and α,ω-divinyl linear telechelic polythiolether oligomers possess high end-group fidelity.

    2. Preparation of non-spherical particles from amphiphilic block copolymers (pages 750–757)

      Kristian Kempe, Ross A. Wylie, Michael D. Dimitriou, Helen Tran, Richard Hoogenboom, Ulrich S. Schubert, Craig J. Hawker, Luis M. Campos and Luke A. Connal

      Article first published online: 20 OCT 2015 | DOI: 10.1002/pola.27927

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      Simple self-assembly techniques were developed to fabricate non-spherical polymer particles, where surface composition and shape can be tuned through temperature and the choice of non-solvents. A series of amphiphilic polystyrene-b-poly(2-ethyl-2-oxazoline) block copolymers were prepared and through solvent exchange techniques using varying non-solvent composition a range of non-spherical particles were formed. These techniques present new tools to engineer the self-assembly of non-spherical polymer particles.

    3. Organocatalytic synthesis of novel renewable non-isocyanate polyhydroxyurethanes (pages 758–764)

      Charlotte Duval, Nasreddine Kébir, Raphaël Jauseau and Fabrice Burel

      Article first published online: 28 SEP 2015 | DOI: 10.1002/pola.27908

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      Novel fully renewable polyhydroxyurethanes are prepared from sebacic acid, glycerol carbonate, and diamines.

    4. Spotlight Article

      Supramolecular polymer gels from polystyrene bearing cyclic amidine Group and acrylic acid/n-butyl acrylate copolymers (pages 765–770)

      Mina Sakuragi, Naoto Aoyagi, Yoshio Furusho and Takeshi Endo

      Article first published online: 5 OCT 2015 | DOI: 10.1002/pola.27909

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      Supramolecular polymer gels were prepared from a polystyrene bearing cyclic amidine pendant group and copolymers of acrylic acid and n-butyl acrylate. The gel formation was attributed to the three-dimensional network of the amidinium-carboxylate salt bridge. Dynamic shear measurements showed that the gel had G' higher than G" over a temperature range of −22 °C to 32 °C, where the G' value reached almost 1 MPa.

    5. You have full text access to this OnlineOpen article
      Syntheses of pyrimidine-based polymers containing electron-withdrawing substituent with high open circuit voltage and applications for polymer solar cells (pages 771–784)

      Juae Kim, Joo Young Shim, Jihoon Lee, Dal Yong Lee, Sangmin Chae, Jinwoo Kim, Il Kim, Hyo Jung Kim, Sung Heum Park and Hongsuk Suh

      Article first published online: 10 OCT 2015 | DOI: 10.1002/pola.27910

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      Pyrimidines were designed which have strong electron-withdrawing group (C[TRIPLE BOND]N or fluorine). By using the Stille coupling condition, synthesized pyrimidines and alkoxy- or thienyl-substituted benzo[1,2-b:4,5-b′]dithiophene (BDT) were coupled to provide four polymers for bulk-heterojunction solar cells. The devices based on the polymer with thienyl-substituted BDT show better photovoltaic performances than those based on the polymer with alkoxy-substituted BDT, caused by high structural organization.

    6. Spotlight Article

      Hole-buffer polymer composed of alternating p-terphenyl and tetraethylene glycol ether moieties: Synthesis and application in polymer light-emitting diodes (pages 785–794)

      Sheng-Ying Chou and Yun Chen

      Article first published online: 30 SEP 2015 | DOI: 10.1002/pola.27911

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      A new hole-buffer polymer 3P5O composed of alternating p-terphenyl and tetraethylene glycol ether segments has been synthesized and successfully applied in PLEDs to efficiently enhance device performance. The 3P5O is inserted between the hole injection layer (PEDOT:PSS) and emission layer (Super Yellow) to diminish hole transport, leading to enhanced carrier recombination ratio and device efficiency.

    7. Pyrene-functionalized oligofluorenes as non-doped deep blue emitters for solution-processed organic light-emitting diodes (pages 795–801)

      Zhaokang Fan, Nengquan Li, Yiwu Quan, Qingmin Chen, Shanghui Ye, Quli Fan and Wei Huang

      Article first published online: 19 OCT 2015 | DOI: 10.1002/pola.27913

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      Pyrene-functionalized oligofluorenes, with a triphenylamine or N,N′-dicarbazolyl-4-4′-biphenyl core as a spacer, are designed for deep blue fluorescent emitter in OLEDs. This multi-H shaped structure efficiently retards the crystallization tendency of the fluorene arms and pyrene groups, and the devices exhibit stable deep-blue light emission with CIE at around (0.16, 0.09) in the practical brightness range of 100–1000 cd m−2.

    8. Synthesis of poly(isopropenylphenoxy propylene carbonate) and its facile side-chain functionalization into hydroxy-polyurethanes (pages 802–808)

      Chun Chieh Huang, Ching Hsuan Lin and Shenghong A. Dai

      Article first published online: 7 OCT 2015 | DOI: 10.1002/pola.27914

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      Synthesis of hydroxyl-polyurethanes through a ring-opening reaction of cyclic carbonate with amines is a potentially useful green process without toxic isocyanates. In this study, a linear homo-polymer, poly(isopropenylphenoxy propylene carbonate), [poly (IPPC)] is prepared, possessing multi-cyclic carbonates on the side-chain through cationic polymerization of IPPC. Thus, curing of the poly(IPPC) with diamines readily resulted in the formation of hydroxyl-polyurethanes on the side-chain which were characterized by the initial soluble phase but then turned into the final insoluble crosslinked films upon solvent removal.

    9. Group 4 complexes bearing bis(salphen) ligands: Synthesis, characterization, and polymerization studies (pages 809–824)

      Mrinmay Mandal and Debashis Chakraborty

      Article first published online: 26 OCT 2015 | DOI: 10.1002/pola.27918

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      New group 4 complexes bearing bis(salphen) ligands were synthesized and their activity toward the ROP of LA, ε-CL, and homopolymerization, copolymerization, and coupling of epoxides with CO2 were investigated.

    10. Controlled radical polymerization of fluorinated methacrylates in supercritical CO2: Synthesis and application of a novel RAFT agent (pages 825–834)

      Jian-Gang Chen, Xian Feng, Ming-Xi Wang, Shukun Shen, Yang Li, Wei Wang, Zhao-Tie Liu, Zhong-Wen Liu, Jinqiang Jiang and Jian Lu

      Article first published online: 15 OCT 2015 | DOI: 10.1002/pola.27919

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      A novel fluorinated RAFT agent of DPFBTTC was synthesized and applied in the polymerization of DFHMA, HFBMA, and TFEMA in scCO2. The polymerization processes were monitored using a HP in-situ NIR system, through which the polymerization kinetics and the controllability of DPFBTTC were evaluated. The controllability of DPFBTTC is found to present in the order of DFHMA > HFBMA > TFEMA. DPFBTTC may fit for the controlled polymerization of the highly fluorinated methacrylate due to its uniquely enhanced accessibility/miscibility.

    11. Spotlight Article

      Synthesis of gradient copolysiloxanes by simultaneous copolymerization of cyclotrisiloxanes and mechanism for kinetics inverse between anionic and cationic ring-opening polymerization (pages 835–843)

      Hua-Feng Fei, Xiaojie Han, Bozheng Liu, Xiyin Gao, Qian Wang, Zhijie Zhang and Zemin Xie

      Article first published online: 13 OCT 2015 | DOI: 10.1002/pola.27921

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      The reactivity of inline image toward anionic ROP was higher than that of inline image; however, inline image exhibited lower reactivity compared with inline image during the cationic ROP. Thus, AB and BAB type gradient copolymers were obtained because of a difference in the reactivity of the monomers.

    12. A convenient synthesis of α,α′- homo- and α,α′-hetero-bifunctionalized poly(ε-caprolactone)s by ring opening polymerization: The potentially valuable precursors for miktoarm star copolymers (pages 844–860)

      Sachin S. Patil, Bhausaheb V. Tawade and Prakash P. Wadgaonkar

      Article first published online: 15 OCT 2015 | DOI: 10.1002/pola.27924

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      Two new ROP initiators, namely, (3-allyl-2-(allyloxy)phenyl)methanol and (3-allyl-2-(prop-2-yn-1-yloxy)phenyl)methanol were synthesized starting from 3-allylsalicyaldehyde. Well defined α,α′- homo- and α,α′-hetero-bifunctionalized poly(ε-caprolactone)s were synthesized and were demonstrated as potentially valuable precursors for synthesis of A2B and ABC miktoarm star copolymers.

    13. Cationic polymerization of vinyl ethers and p-methoxystyrene by a benign initiating system: Silver salt/arylmethyl halide/dialkyl sulfide (pages 861–870)

      Li Lin, Guangyou Zhang, Koichi Kodama, Hiroaki Shitara and Takuji Hirose

      Article first published online: 13 OCT 2015 | DOI: 10.1002/pola.27925

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      Cationic polymerization of vinyl ethers (VEs) and p-methoxystyrene was conducted using an ecofriendly initiating system containing silver perchlorate/arylmethyl halide/dialkyl sulfide. Well-controlled polymerization behavior was demonstrated by 1H NMR and MS spectroscopy. Appropriate reaction temperature and the coordination of dialkyl sulfide to arylmethyl cation were essential and their effects were investigated in detail by MS and 1H NMR, respectively.

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