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Enhanced energy transfer efficiency in star-shaped light-harvesting block copolymers prepared by RAFT polymerization

被引：10
作者：
Chen, M
Ghiggino, KP [1 ]
Thang, SH
Wilson, GJ
机构：
[1] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia
[2] CSIRO Mol & Hlth Technol, Clayton, Vic 3169, Australia
来源：
JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2006年 / 53卷 / 01期
关键词：
light-harvesting polymers; luminescent polymers; energy transfer; RAFT polymerization;
D O I：
10.1002/jccs.200600010
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Reversible addition-fragmentation chain transfer (RAFT) polymerization has been used to synthesize a star-shaped light-harvesting polymer comprising six diblock copolymer arms of styryl coumarin (St-Coumarin) and methyl acrylate (MA) surrounding a ruthenium (11) trisbipyridyl energy trap core. The efficiency of excitation energy transfer from the styryl cournarin units to the Ru(II) core is increased to 90% compared to 60% for the analogous star polymer without MA blocks. The enhanced excitation energy transfer efficiency arises from the role of the MA blocks in diminishing the competitive quenching of photoexcited St-cournarin chromophores by dithiobenzoyl polymer end groups present from the RAFT polymerization procedure.
引用
收藏
页码：79 / 83
页数：5
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