Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 50 Issue 11

1 June 2012

Volume 50, Issue 11

Pages i–iv, 2085–2292

  1. Cover Image

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Articles
    1. You have free access to this content
      Cover Image, Volume 50, Issue 11 (pages i–ii)

      Article first published online: 23 APR 2012 | DOI: 10.1002/pola.26110

      Thumbnail image of graphical abstract

      A two-terminal organic electronic device with a single active layer, composed of an electron-donor-type conjugated polymer, an electron-acceptor-type small organic molecule and an insulating polymer, is investigated for non-volatile memory applications, as presented by Jae-Eun Park, Jae-Hoon Eom, Taehoon Lim, Do-Hoon Hwang, and Seungmoon Pyo on page 2188. The image describes chemical structures of components of the active layer and the schematic device structure. The active layer is formed through a simple spin-coating process. The devices are expected to work as a switching and memory element due to the co-existence of electron-donor- and -acceptor-type materials. The device performance can be improved by controlling the composition of the active layer.

    2. You have free access to this content
      Inside Cover, Volume 50, Issue 11 (pages iii–iv)

      Article first published online: 23 APR 2012 | DOI: 10.1002/pola.26111

      Thumbnail image of graphical abstract

      Aromatic amine-based electrochromophores are quantitatively introduced into polystyrene side chains by the Cu(I)-catalyzed azidealkyne cycloaddition reaction, as presented by Yongrong Li and Tsuyoshi Michinobu on page 2111. Cyclic voltammograms of the polymer thin films show the reversible oxidation peaks ascribed to the aromatic amine moieties. The rapid blue or green coloration and their reversible bleaching processes are revealed. The click post-functionalization approach is a powerful technique for the preparation of side-chain-type polymers with desired functionalities.

  2. Highlight

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Articles
    1. You have free access to this content
      Cyclic polymers: Methods and strategies (pages 2085–2097)

      Zhongfan Jia and Michael J. Monteiro

      Article first published online: 28 FEB 2012 | DOI: 10.1002/pola.25999

      Thumbnail image of graphical abstract

      Cyclic polymers have different physical properties compared to their linear counterparts of the same molecular weight. These different properties could have potential impact in the production of new and exciting polymer products. For industry to commercialize such materials, cyclic polymers need to be made on large scales, have controlled molecular weight distributions, and have versatile chemical composition. This highlight article describes many of the synthetic methods and strategies for obtaining highly pure cyclic polymers, and presents kinetic attributes for some of the processes.

  3. Articles

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Articles
    1. Diene-based polymer nanoparticles: Preparation and direct catalytic latex hydrogenation (pages 2098–2110)

      Hui Wang, Qinmin Pan and Garry L. Rempel

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25982

      Thumbnail image of graphical abstract

      The diene-based polymer nanoparticles of poly(butadiene-co-acrylonitrile) were prepared via a semibatch process using Gemini surfactant trimethylene-1,3-bis(dodecyl dimethylammonium bromnium bromide) as the emulsifier and were then directly hydrogenated in the latex form with a much faster rate in achieving a required conversion of 95% than the same reaction with a commercial latex.

    2. Click synthesis and reversible electrochromic behaviors of novel polystyrenes bearing aromatic amine units (pages 2111–2120)

      Yongrong Li and Tsuyoshi Michinobu

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25990

      Thumbnail image of graphical abstract

      Aromatic amine-based active electrochromophores were quantitatively introduced into a polystyrene side chain by using the Cu(I)-catalyzed azide-alkyne cycloaddition reaction. The reversible electrochromic behaviors of the functionalized polystyrenes were investigated by spectroelectrochemistry.

    3. Novel conjugated copolymers based on dithiafulvalene moiety for bulk heterojunction solar cells (pages 2121–2129)

      Yung-Chung Chen, Chih-Yu Hsu and Jiann T. Lin

      Article first published online: 28 FEB 2012 | DOI: 10.1002/pola.25998

      Thumbnail image of graphical abstract

      New conjugated copolymers, P1–P3, based on a dithiafulvalene-fused entity and different conjugated segments have been synthesized. Bulk heterojunction (BHJ) solar cells using these polymers as the donor and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) as the acceptor were fabricated by a solution process. The power conversion efficiency of the cells in a 1:1 (w/w) polymer/PC61BM blend ranges from 0.53 to 0.93%. The efficiencies of the OPVs in this study surpass those of TTF- (tetrathiafulvalene-) based cells.

    4. Peptide-poly(ε-caprolactone) biohybrids by grafting-from ring-opening polymerization: Synthesis, aggregation, and crystalline properties (pages 2130–2141)

      Tapas K. Paira, Sanjib Banerjee and Tarun K. Mandal

      Article first published online: 28 FEB 2012 | DOI: 10.1002/pola.26003

      Thumbnail image of graphical abstract

      A grafting-from ring-opening polymerization (ROP) technique was used to successfully synthesize well-defined peptide-poly(ε-caprolactone) (Pep-PCL) biohybrids using designed amine-terminated sequence-defined peptides as macroinitiators. Pep-PCL biohybrids with controllable molecular weights and low polydispersities (PDI < 1.5) were obtained by this approach. The aggregation of Pep-PCL hybrid molecules in THF solution resulted in the formation of micro/nanospheres. It was found that the crystallization and melting behavior of Pep-PCL hybrids were somewhat changed compared with that of virgin PCL. In Pep-PCL biohybrids, extinction rings were observed in the PCL spherulites, in contrast with the normal spherulite morphology of the neat PCL.

    5. Role of radicals in UV-initiated postplasma grafting of poly-ε-caprolactone: An electron paramagnetic resonance study (pages 2142–2149)

      Hendrik De Cooman, Tim Desmet, Freddy Callens and Peter Dubruel

      Article first published online: 11 MAR 2012 | DOI: 10.1002/pola.26007

      Thumbnail image of graphical abstract

      The electron paramagnetic resonance signals of radicals induced in electrospun poly-ε-caprolactone films by Ar plasma (red) or UV light (blue) during postplasma grafting indicate the former are mainly oxygen-centered and the latter mainly carbon-centered. The UV generation of radicals appears to be independent of the plasma pretreatment. This raises questions with respect to the molecular mechanisms generally assumed to underpin the postplasma-grafting process.

    6. Controlled nitroxide-mediated radical polymerization of methyl and phenyl vinyl ketone (pages 2150–2160)

      Johannes A. M. Hepperle, Heinrich Luftmann and Armido Studer

      Article first published online: 5 MAR 2012 | DOI: 10.1002/pola.25997

      Thumbnail image of graphical abstract

      This article describes nitroxide-mediated polymerization (NMP) of methyl vinyl ketone (MVK) and phenyl vinylketone (PVK) using alkoxyamine 1 as initiator/regulator. NMP of MVK occurs well controlled. However, for controlled NMP of PVK, styrene and free nitroxide are necessary as additives. Mass spectrometric analysis is used to investigate the polymerization process.

    7. Block and random copolymerization of ε-caprolactone, L-, and rac-lactide using titanium complex derived from aminodiol ligand (pages 2161–2171)

      Deivasagayam Dakshinamoorthy and Frédéric Peruch

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25983

      Thumbnail image of graphical abstract

      A series of di- and triblock copolymers of ε-caprolactone, L-lactide, D,L-lactide, and trimethylene carbonate have been synthesized successfully by sequential ring-opening polymerization technique using titanium complexes supported by aminodiol ligands as initiators. It was shown that either ε-caprolactone or lactide could be polymerized first. Copolymers of ε-caprolactone and lactides with different composition were also synthesized both in solution and bulk conditions, revealing that transesterification reactions could play a significant role in the redistribution of monomer leading to random copolymers.

    8. Fluorene- and benzimidazole-based blue light-emitting copolymers: Synthesis, photophysical properties, and PLED applications (pages 2172–2181)

      Haifeng Zhu, Hui Tong, Yongyang Gong, Shiyang Shao, Chunmei Deng, Wang Zhang Yuan and Yongming Zhang

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25984

      Thumbnail image of graphical abstract

      A conjugated polymer based on 9,9′-dioctylfluorene and N-octyl substituted 2,2′-(1,4-phenylene)-bis(benzimidazole) moieties (PFBI8) was synthesized. Its solutions emit blue light efficiently, with the quantum yield up to 99% in chloroform. It is also morphologically and thermally stable, with glass transition temperature and decomposition temperature as high as 103 and 428 °C, respectively. The polymer light-emitting diode using PFBI8 as the active emitting layer exhibits blue emission (448 nm) with the maximum luminance, current efficiency and power efficiency of 1534 cd/m2, 0.67 cd/A, and 0.20 lm/W, respectively.

    9. ATRP of styrene catalyzed by elemental Fe(0) and Br2: An easy and economical ATRP process (pages 2182–2187)

      Huali Yu, Zhengbiao Zhang, Zhenping Cheng, Jian Zhu, Nianchen Zhou, Wei Zhang and Xiulin Zhu

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25986

      Thumbnail image of graphical abstract

      In this work, zero-valent iron (Fe(0)) (powder or wire) and elemental bromine (Br2) were used as the catalysts for ATRP of styrene (St) without any additional initiator at 110 °C. The polymerizations occurred with controlled evidence with appropriate molar ratio of Fe(0)/Br2. The polymerization was suggested to be initiated by thermal self-initiation, and regulated by the in situ-generated FeIIIBr3. This work enriches ATRP techniques by providing a more operable and economical ATRP strategy.

    10. Electrical bistability of organic devices with a polymeric thin film for nonvolatile data storage (pages 2188–2193)

      Jae-Eun Park, Jae-Hoon Eom, Taehoon Lim, Do-Hoon Hwang and Seungmoon Pyo

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25987

      Thumbnail image of graphical abstract

      Organic memory devices with a single active layer between the two external electrodes were fabricated using an electron-donor type semiconducting polymer and an electron-acceptor type small organic molecule. The device initially showed a low-conductance state (OFF state) in the low-voltage range, and an abrupt current increase, corresponding to the transition to a high-conductance state (ON state), occurred at a certain voltage (Vth).

    11. AGET ATRP of water-soluble PEGMA: Fast living radical polymerization mediated by iron catalyst (pages 2194–2200)

      Jie Miao, Weiwei He, Lifen Zhang, Yi Wang, Zhenping Cheng and Xiulin Zhu

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25988

      Thumbnail image of graphical abstract

      A novel method for the synthesis of a well-defined water-soluble polymer P(PEGMA) with lower molecular weight distributions (Mw/Mn ∼ 1.2) was demonstrated successfully via bulk AGET ATRP, catalyzed by FeCl3·6H2O/PPh3 complex, of hydrophilic monomer PEGMA in the presence/absence of reducing agents (ascorbic acid or iron(0) wire). The use of an iron catalyst with better biocompatibility provided a facile strategy for the controlled synthesis of biomaterials.

    12. Synthesis of 9,9-bis(4-aminophenyl)fluorene-based benzoxazine and properties of its high-performance thermoset (pages 2201–2210)

      Hou Chien Chang, Ching Hsuan Lin, Yu Wei Tian, Yu Ren Feng and Li Hsin Chan

      Article first published online: 28 FEB 2012 | DOI: 10.1002/pola.25993

      Thumbnail image of graphical abstract

      A 9,9-bis(4-aminophenyl)fluorene-based benzoxazine was successfully prepared using two-pot and one-pot procedures. After curing, a thermoset with high Tg, good thermal stability, and a high refractive index was achieved. The fluorene structure is responsible for these special properties.

    13. New selenium-based iniferter agent for living free radical polymerization of styrene under UV irradiation (pages 2211–2218)

      Jindong Zeng, Jian Zhu*, Zhengbiao Zhang, Xiangqiang Pan, Wei Zhang, Zhenping Cheng and Xiulin Zhu*

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25994

      Thumbnail image of graphical abstract

      A new polymerization mechanism for styrene in the presence of diselenoic acid benzyl ester under UV irradiation showed that the selenium-based compound serves as an iniferter.

    14. Polymeric temperature and pH fluorescent sensor synthesized by reversible addition–fragmentation chain transfer polymerization (pages 2219–2226)

      Guofeng Liu, Wei Zhou, Jiaqi Zhang and Ping Zhao

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25995

      Thumbnail image of graphical abstract

      A PCN250 solution showed a change from royal blue to baby blue in high proton concentration, which was attributed to the protonation of the aniline N–H. The pH change in the medium played a key role in the ON/OFF switching for the fluorescent copolymeric thermometer.

    15. Synthesis of amphiphilic tadpole-shaped copolymers by combination of glaser coupling with living anionic polymerization and ring-opening polymerization (pages 2227–2235)

      Guowei Wang, Bin Hu, Xiaoshan Fan, Yannan Zhang and Junlian Huang

      Article first published online: 23 FEB 2012 | DOI: 10.1002/pola.25996

      Thumbnail image of graphical abstract

      The tadpole-shaped copolymers polystyrene-b-[cyclic poly(ethylene oxide)] [PS-b-(c- PEO)] with a linear tail chain of PS and a cyclic head chain of PEO were synthesized by combination of Glaser coupling with living anionic polymerization (LAP) and ring-opening polymerization (ROP). The intramolecular cyclization was performed by Glaser coupling reaction in a pyridine/Cu(I)Br /N,N,N′,N″,N″-pentamethyldiethylenetriamine (PMDETA) system under room temperature. The thermal properties of target copolymers and their precursors were compared to investigate the influence of architecture on properties.

    16. Antimicrobial equipment of poly(isoprene) applying thiol-ene chemistry (pages 2236–2243)

      Julia Kienberger, Nadja Noormofidi, Inge Mühlbacher, Ingo Klarholz, Carsten Harms and Christian Slugovc

      Article first published online: 5 MAR 2012 | DOI: 10.1002/pola.26001

      Thumbnail image of graphical abstract

      Anionically polymerized poly(isoprene) was functionalized with cysteamine via a thermally induced thiol-ene reaction. Subsequent quaternization of the amino-group yielded contact biocides which are active against Gram-positive and Gram-negative bacteria strains.

    17. Iron-mediated AGET ATRP of methyl methacrylate using metal wire as reducing agent (pages 2244–2253)

      Hongjuan Jiang, Lifen Zhang, Jinlong Pan, Xiaowu Jiang, Zhenping Cheng and Xiulin Zhu

      Article first published online: 28 FEB 2012 | DOI: 10.1002/pola.26002

      Thumbnail image of graphical abstract

      A fast and efficient iron-mediated AGET ATRP system was demonstrated by using iron(0) or copper(0) wire as the reducing agent. The polymerization can be conducted successfully in the presence of a limited amount of air and the zerovalent wires can be conveniently removed from the polymerization system after polymerization and reused easily.

    18. Controlled random and alternating copolymerization of (meth)acrylates, acrylonitrile, and (meth)acrylamides with vinyl ethers by organotellurium-, organostibine-, and organobismuthine-mediated living radical polymerization reactions (pages 2254–2264)

      Eri Mishima and Shigeru Yamago

      Article first published online: 28 FEB 2012 | DOI: 10.1002/pola.26004

      Thumbnail image of graphical abstract

      Organotellurium-, organostibine-, and organobismuthine-mediated living radical polymerization (TERP, SBRP, and BIRP, respectively) of (meth)acrylates and vinyl ethers afforded the corresponding random and alternating copolymers with controlled molecular weight and narrow molecular weight distribution. The copolymer was successfully used as a macro initiator for preparation of block copolymers under living radical and living cationic polymerization conditions.

    19. Silole-containing poly(silylenevinylene)s: Synthesis, characterization, aggregation-enhanced emission, and explosive detection (pages 2265–2274)

      Zujin Zhao, Tao Jiang, Yanju Guo, Liyuan Ding, Bairong He, Zhengfeng Chang, Jacky W. Y. Lam, Jianzhao Liu, Carrie Y. K. Chan, Ping Lu, Liwen Xu, Huayu Qiu and Ben Zhong Tang

      Article first published online: 13 MAR 2012 | DOI: 10.1002/pola.26006

      Thumbnail image of graphical abstract

      A series of silole-containing poly(silylenevinylene)s are synthesized regioselectively in high yields. These polymers show aggregation-enhanced emission and sensitive response to explosives in aqueous media.

    20. Methylol-functional benzoxazines as precursors for high-performance thermoset polymers: Unique simultaneous addition and condensation polymerization behavior (pages 2275–2285)

      Mohamed Baqar, Tarek Agag, Hatsuo Ishida and Syed Qutubuddin

      Article first published online: 11 MAR 2012 | DOI: 10.1002/pola.26008

      Thumbnail image of graphical abstract

      A pioneer class of high-performance phenolic resins with dual polymerization behavior using both benzoxazine resin and traditional phenolic resin chemistry is shown by incorporating a methylol group into the benzoxazine structure. The presence of methylol groups results in an additional condensation reaction along with the ring-opening polymerization of benzoxazine, as well as a lower polymerization temperature. The position of the methylol group is found to play a significant role in both accelerating the polymerization process and in the thermal properties of the produced polymer.

    21. Biosensor employing screen-printed PEDOT:PSS for sensitive detection of phenolic compounds in water (pages 2286–2292)

      Ewa Moczko, Georges Istamboulie, Carole Calas-Blanchard, Regis Rouillon and Thierry Noguer

      Article first published online: 13 MAR 2012 | DOI: 10.1002/pola.26009

      Thumbnail image of graphical abstract

      This work presents a new application of PEDOT:PSS as an electrochemical mediator for the detection of quinonic compounds. It has also been found suitable for the reduction of quinones at very low potential, near 0 V versus Ag/AgCl, allowing minimizing nonspecific responses related to interfering compounds. The enzyme tyrosinase has been immobilized on the developed sensors to design a biosensor for the detection of phenolic compounds in water. The biosensor has been used for the effective detection of bisphenol A in surface waters.

SEARCH

SEARCH BY CITATION