PHOTOINDUCED ISOMERIZATION AND ELECTRON-TRANSFER IN THE ALL-TRANS-RETINYL CATION

Authors
WANG Z MCGIMPSEY WG
Citation
Z. Wang et Wg. Mcgimpsey, PHOTOINDUCED ISOMERIZATION AND ELECTRON-TRANSFER IN THE ALL-TRANS-RETINYL CATION, Journal of photochemistry and photobiology. A, Chemistry, 93(2-3), 1996, pp. 151-155
Citations number
22
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
93
Issue
2-3
Year of publication
1996
Pages
151 - 155
Database
ISI
SICI code
1010-6030(1996)93:2-3<151:PIAEIT>2.0.ZU;2-T
Abstract
Two-laser flash photolysis was carried out on all-trans-retinol in ace tonitrile solution at room temperature. As reported previously, the fi rst laser pulse causes ionic photodissociation leading to the producti on of the all-trans-retinyl cation. The second pulse, tuned to the cat ion absorption, causes trans -->cis photoisomerization, yielding a cis -retinyl cation. In the presence of aromatic electron donors with E(ox ) < + 1.5 V (vs. saturated calomel electrode), excitation of the all-t rans cation leads to electron transfer.