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

Andrew D. Kitchin; Suresh Velate; Ming Chen; Kenneth P. Ghiggino; Trevor A. Smith; Ronald P. Steer

doi:10.1039/B702811C

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Photochemical & Photobiological Sciences

Issue 8, 2007

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

Andrew D. Kitchin , Suresh Velate , Ming Chen , Kenneth P. Ghiggino , Trevor A. Smith and Ronald P. Steer

Photochem. Photobiol. Sci., 2007, 6, 853-856

DOI: 10.1039/B702811C
Received 23 Feb 2007, Accepted 22 May 2007
First published on the web 06 Jun 2007

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Abstract
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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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Andrew D. Kitchin
Suresh Velate
Ming Chen
Kenneth P. Ghiggino
Trevor A. Smith
Ronald P. Steer

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Photochemical & Photobiological Sciences

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

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