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 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.
Kitchin
Andrew D
AD
Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada S7N 5C9.
Velate
Suresh
S
Chen
Ming
M
Ghiggino
Kenneth P
KP
Smith
Trevor A
TA
Steer
Ronald P
RP
D004952:Esters / Q000737:chemistry; D008027:Light; D010777:Photochemistry; D055585:Physical Phenomena; D010825:Physics; D011108:Polymers / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D004952:Esters; D011108:Polymers