FEMTOSECOND SPECTROSCOPY OF THE PHOTOISOMERIZATION OF THE PROTONATED SCHIFF-BASE OF ALL-TRANS RETINAL

Authors
HAMM P ZUREK M ROSCHINGER T PATZELT H OESTERHELT D ZINTH W
Citation
P. Hamm et al., FEMTOSECOND SPECTROSCOPY OF THE PHOTOISOMERIZATION OF THE PROTONATED SCHIFF-BASE OF ALL-TRANS RETINAL, Chemical physics letters, 263(5), 1996, pp. 613-621
Citations number
30
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
263
Issue
5
Year of publication
1996
Pages
613 - 621
Database
ISI
SICI code
0009-2614(1996)263:5<613:FSOTPO>2.0.ZU;2-3
Abstract
The light-induced isomerisation reaction of the protonated Schiff base retinal molecule in solution (PSBR-s) was studied by femtosecond abso rption spectroscopy. After electronic excitation, ultrafast reactions on the excited electronic state occur on a 100 fs time-scale. The deca y of S-1 exhibits a biphasic dependence with a 2.0 and a 7.2 ps proces s. The photoreaction of PSBR-s is compared with the processes found in the retinal proteins rhodopsin, bacteriorhodopsin and halorhodopsin.