Journal of Polymer Science Part A: Polymer Chemistry
Copyright © 2012 Wiley Periodicals, Inc., A Wiley Company
Impact Factor: 3.113
ISI Journal Citation Reports © Ranking: 2014: 18/82 (Polymer Science)
Online ISSN: 1099-0518
Associated Title(s): Journal of Polymer Science Part B: Polymer Physics
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- RAFT made methacrylate copolymers for reversible pH-responsive nanoparticles
Turgay Yildirim, Alexandra C. Rinkenauer, Christine Weber, Anja Traeger, Stephanie Schubert and Ulrich S. Schubert
Article first published online: 2 JUL 2015 | DOI: 10.1002/pola.27734
A library of well-defined copolymers of methyl methacrylate (MMA) with 2-(dimethylamino) ethyl methacrylate (DMAEMA), 2-(tert-butylamino)ethylmethacrylate (tBAEMA) and 2-aminoethyl methacrylate hydrochloride (AEMA HCI) was synthesized via RAFT polymerization. The controlled nature of the radical polymerization was demonstrated by kinetic studies. Well-defined nanoparticles from the synthesized copolymers with varying sizes were successfully prepared via the nanoprecipitation method. Depending on the structure and amount of the amino content, the obtained nanoparticles reveal a reversible pH-response. The nanoparticles did not exhibit any cytotoxic effect on L929 cells.
- Novel isoindigo-based conjugated polyelectrolytes: Synthesis and fluorescence quenching behavior with water-soluble poly(p-phenylenevinylene)s
Chun Kou, Xiaolong He, Xueyu Jiang, Yifeng Ni, Ling Liu, Changxin Huangfu and Kuan Liu
Article first published online: 30 JUN 2015 | DOI: 10.1002/pola.27711
Two novel ID-based conjugated polyelectrolytes (+)-PIDPV and (−)-PIDPV were synthesized and both polymers exhibit broad absorption band in the visible region. The fluorescence emission of (+)-PPV can be quenched by the addition of (−)-PIDPV at a very low concentration with KSV =1.01 × 106 M−1 while (−)-PPV gives a larger constant with KSV =1.71 × 106 M−1 in the presence of (+)-PIDPV. The efficient quenching effect is governed by various mechanisms while dynamic quenching is the leading factor. The fluorescence of PPVs is also quenched by the oppositely charged PIDPV in the solid state.
- Biocompatible amphiphilic conetwork based on crosslinked star copolymers: A potential drug carrier
Haiye Wang, Aiwen Qin, Xiang Li, Xinzhen Zhao, Dapeng Liu and Chunju He
Article first published online: 30 JUN 2015 | DOI: 10.1002/pola.27721
Novel “core-first” star polymer-based conetworks were successfully fabricated via sequential atom transfer polymerization. The amphiphilic conetworks (APCNs) exhibit unique swelling behavior, excellent mechanical properties, distinct phase separation, and good cytocompatibility, which are suitable for sustained controlled release of choline theophyllinate where the release rate can be regulated by varying the hydrophilic (HI) composition and crosslinking density. The overall results suggest that APCN is a promising candidate as a drug carrier.
- Synthesis of new optically active α,α′,β-trisubstituted-β-lactones as monomers for stereoregular biopolyesters
Rima Belibel and Christel Barbaud
Article first published online: 30 JUN 2015 | DOI: 10.1002/pola.27724
The use of biodegradable and bioassimilable stereopolymers is innovative for temporary therapeutic applications. Stereopolyesters derived from malic acid were synthesized by anionic polymerization from new optically active α,α′,β-trisubstituted-β-lactones as monomers. The total synthesis and characterization of a series of design lactones and one isotactic homopolyester are described in detail.
- Random propene/4-methyl-1-pentene copolymers synthesized with C2 symmetric highly isospecific metallocenes
Maria Carmela Sacchi, Simona Losio, Luigi Fantauzzi, Paola Stagnaro, Roberto Utzeri and Maurizio Galimberti
Article first published online: 30 JUN 2015 | DOI: 10.1002/pola.27725
Random propene-based copolymers with a 1-olefin such as 4-methyl-1-pentene (Y), within a wide range of compositions, are prepared with the highly isospecific single site catalyst, rac-CH2(3-t BuInd)2ZrCl2. This finding is against what is acknowledged in the field and provides a novel strategy for the preparation on a large scale of random propene-based copolymers by properly selecting the metallocene/comonomer combination.