Mn2(CO)10-Induced RAFT Polymerization of Vinyl Acetate, Methyl Acrylate, and Styrene
Mn2(CO)10-Induced RAFT Polymerization of Vinyl Acetate, Methyl Acrylate, and Styrene
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DOI：
10.1295/polymj.pj2009070
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发表时间：
2009-08
期刊：
影响因子：
2.8
通讯作者：
Kazuhiko Koumura;K. Satoh;M. Kamigaito
中科院分区：
文献类型：
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作者：
Kazuhiko Koumura;K. Satoh;M. Kamigaito
一种双核锰配合物[Mn2(CO)10]在40°C弱可见光下诱导了多种共轭和非共轭乙烯基单体（包括醋酸乙烯、丙烯酸甲酯和苯乙烯）与二硫羰基化合物[R-SC(S)Z]的可控/活性自由基聚合。通过SEC、1H NMR和MALDI-TOF-MS分析表明，所得聚合物分子量可控，分子量分布窄，链端基明确，源自R-SC(S)Z。聚合最可能通过·Mn(CO)5通过金属催化过程可逆激活C-SC(S)Z键和/或碳中心自由基通过加成-裂解链转移（RAFT）过程进行。
A dinuclear manganese complex [Mn2(CO)10] induced the controlled/living radical polymerization of various conjugated and unconjugated vinyl monomers including vinyl acetate, methyl acrylate, and styrene in conjunction with dithiocarbonyl compounds [R-SC(S)Z] under weak visible light at 40 °C. The obtained polymers had controlled molecular weights, narrow molecular weight distributions, and well-defined chain-end groups originating from R-SC(S)Z, as indicated by SEC, 1H NMR, and MALDI-TOF-MS analyses. The polymerization most probably proceeds via the reversible activation of the C-SC(S)Z bond by ·Mn(CO)5 via the metal-catalyzed process and/or by the carbon-centered radical species via the addition-fragmentation chain transfer (RAFT) process.