Photophysics of a dithioester RAFT polymerization agent and the acenaphthenyl model light-harvesting chromophore

The spectroscopic and photophysical properties of a typical dithiobenzoate reversible addition-fragmentation chain transfer (RAFT) polymerization agent alone in solution, as a quencher of electronically excited acenaphthene in solution, and in an acenaphthene donor-dithiobenzoate acceptor dichromoph...

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Published inPhotochemical & photobiological sciences Vol. 6; no. 8; pp. 853 - 856
Main Authors Kitchin, Andrew D, Velate, Suresh, Chen, Ming, Ghiggino, Kenneth P, Smith, Trevor A, Steer, Ronald P
Format Journal Article
LanguageEnglish
Published England 01.08.2007
Subjects
Esters - chemistry
Light
Photochemistry
Physical Phenomena
Physics
Polymers - chemistry
Spectrophotometry, Ultraviolet
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Summary:The spectroscopic and photophysical properties of a typical dithiobenzoate reversible addition-fragmentation chain transfer (RAFT) polymerization agent alone in solution, as a quencher of electronically excited acenaphthene in solution, and in an acenaphthene donor-dithiobenzoate acceptor dichromophore have been investigated. The RAFT agent is an effective quencher of photo-excited acenaphthene. Energy wastage in the dichromophore occurs by Förster resonant electronic energy transfer from the S1 state of acenaphthene to the S2 state of the dithioester, which subsequently fragments.
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ISSN:1474-905X
1474-9092
DOI:10.1039/b702811c