Journal article
Tailored amphiphilic star-shaped light-harvesting copolymers
Ming Chen, Kenneth P Ghiggino, San H Thang, Gerard J Wilson
POLYMER INTERNATIONAL | WILEY | Published : 2006
DOI: 10.1002/pi.1911
Abstract
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 re..
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