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Tailored amphiphilic star-shaped light-harvesting copolymers

被引：12
作者：
Chen, Ming
Ghiggino, Kenneth P. [1 ]
Thang, San H.
Wilson, Gerard J.
机构：
[1] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia
[2] CSIRO Mol Sci, Clayton, Vic 3169, Australia
来源：
POLYMER INTERNATIONAL | 2006年 / 55卷 / 07期
关键词：
light-harvesting polymers; amphiphilic polymers; excitation energy transfer; RAFT polymerization;
D O I：
10.1002/pi.1911
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Amphiphilic star-shaped light-harvesting copolymers comprising six diblock arms of styryl coumarin (St-Coumarin) and N-isopropylacrylamide (NIPAM) surrounding a ruthenium(II) tris(bipyridyl) energy-trap core have been synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. The mechanism of excitation energy transfer (EET) from initially excited St-Coumarin chromophores to the Ru(II) trap has been investigated and is concluded to occur mainly through a single-step induced dipole-dipole process. Incorporation of the NIPAM sequences results in enhanced EET efficiencies and confers water solubility to the polymers. The photophysical behavior of the copolymers is reported; marked differences are exhibited in aqueous solution when compared to organic solutions. (C) 2005 Society of Chemical Industry.
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收藏
页码：757 / 763
页数：7
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