Author/Authors :
Hamm، نويسنده , , P. and Zurek، نويسنده , , M. and Rِschinger، نويسنده , , T. and Patzelt، نويسنده , , H. and Oesterhelt، نويسنده , , D. and Zinth، نويسنده , , W.، نويسنده ,
Abstract :
The light-induced isomerisation reaction of the protonated Schiff base retinal molecule in solution (PSBR-s) was studied by femtosecond absorption spectroscopy. After electronic excitation, ultrafast reactions on the excited electronic state occur on a 100 fs time-scale. The decay of S1 exhibits a biphasic dependence with a 2.0 and a 7.2 ps process. The photoreaction of PSBR-s is compared with the processes found in the retinal proteins rhodopsin, bacteriorhodopsin and halorhodopsin.
