Photoinduced Metal-Free Atom Transfer Radical Polymerization of Acrylonitrile
Photoinduced Metal-Free Atom Transfer Radical Polymerization of Acrylonitrile
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DOI：
10.1021/mz500834g
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发表时间：
2015-02-01
影响因子：
7.015
通讯作者：
Matyjaszewski, Krzysztof
中科院分区：
文献类型：
--
作者：
Pan, Xiangcheng;Lamson, Melissa;Matyjaszewski, Krzysztof
光诱导无金属原子转移自由基聚合已成功地用于合成具有可预测分子量和低分散性的聚丙烯腈（PAN）。这是使用吩噻嗪衍生物作为光氧化还原催化剂来实现的，其激活休眠的烷基溴以可逆地形成增长自由基。H-1 NMR光谱和链端延伸聚合显示在合成的PAN中高度保留的Br链端官能度。
Photoinduced metal-free atom transfer radical polymerization has been successfully extended to the synthesis of polyacrylonitrile (PAN) with predictable molecular weights and low dispersities. This was achieved using phenothiazine derivatives as photoredox catalysts, which activate dormant alkyl bromides to reversibly form propagating radicals. Both H-1 NMR spectroscopy and chain-end extension polymerization show highly preserved Br chain-end functionality in the synthesized PAN.