Excited State Spectra and Dynamics of Phenyl-Substituted Butadienes
Excited State Spectra and Dynamics of Phenyl-Substituted Butadienes
复制标题
苯基取代丁二烯的激发态光谱和动力学
DOI：
10.1021/j100052a011
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
D. Kliger
中科院分区：
文献类型：
--
作者：
S. Wallace;B. Schwartz;S. Moeller;R. A. Goldbeck;W. A. Yee;M. El‐Bayoumi;D. Kliger
稳态和动态光谱测量的结合用于对全反式 1,4-二苯基-1,3-丁二烯和几种类似物的激发态过程的性质提供新的见解：1,4-二苯基-1,3-环戊二烯、1,1,4,4-四苯基丁二烯、1,2,3,4-四苯基-1,3-环戊二烯和E,E-二茚满基乙烷。基态吸收、荧光和纳秒瞬态吸收测量可识别激发时的几何变化，并提供有关第一激发单线态性质的信息。飞秒和皮秒瞬态吸收数据表明苯基扭转运动对激发态动力学并不重要，并揭示了替代的激发态反应途径
A combination of steady-state and dynamic spectral measurements are used to provide new insights into the nature of the excited-state processes of all-trans-1,4-diphenyl-1,3-butadiene and several analogs: 1,4-diphenyl- 1,3-cyclopentadiene, 1,1,4,4-tetraphenylbutadiene, 1,2,3,4-tetraphenyl-1,3-cyclopentadiene, and E,E-diindanylidenylethane. Ground-state absorption, fluorescence, and nanosecond transient absorption measurements identify geometry changes upon excitation and provide information regarding the nature of the first excited singlet state. Femtosecond and picosecond transient absorption data indicate that phenyl torsional motion is not important to the excited-state dynamics and reveal alternative excited-state reaction pathways