Cis-trans photoisomerization of a p-styrylstilbene, a one- and twofold adiabatic process
作者:Kjell Sandros、Mikael Sundahl、Olof Wennerstroem、Ulf Norinder
DOI:10.1021/ja00164a031
日期:1990.4
The mechanism of the Z/E photoisomerization of a p-styrylstilbene has been studied by steady state and time-resolved fluorescence measurements combined with isomerization quantum yield determinations. It was found that on excitation of the Z,Z isomer both the isomers, Z,E and E,E, are produced initially, maintly by adiabatic processes on the singlet excited surface. Quantum mechanical calculations
已经通过稳态和时间分辨荧光测量结合异构化量子产率测定研究了对苯乙烯二苯乙烯的 Z/E 光异构化的机制。发现在激发 Z,Z 异构体时,最初产生两种异构体 Z,E 和 E,E,主要通过单线态激发表面上的绝热过程产生。量子力学计算给出了支持所采用机制的表面轮廓