| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1410945 | Journal of Molecular Structure | 2010 | 5 Pages |
Abstract
The mechanism of the photoisomerization of 9-cis retinal has been studied by nanosecond time-resolved infrared spectroscopy. A cyclohexane solution of 9-cis retinal was photoexcited at 349Â nm and the subsequent photodynamics were traced. A singular value decomposition (SVD) analysis of the time-resolved infrared data shows that there are two distinct isomerization pathways. One is the triplet pathway that takes place in the picosecond time regime from 9-cis to all-trans. The other involves the energy transfer between the all-trans triplet state and the 9-cis ground state with the resultant 9-cis triplet state subsequently reproducing the all-trans by fast isomerization on the triplet potential surface. This quantum chain process occurs in the microsecond time regime.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Tetsuro Yuzawa, Hiro-o Hamaguchi,