J. Phys. Chem. A 1998, 102, 35-44
35
Femtosecond Transient Absorption Studies of trans- and cis-1,3,5-Hexatriene in Solution Kaoru Ohta,†,‡ Yukito Naitoh,‡ Keisuke Tominaga,‡ Noboru Hirota,† and Keitaro Yoshihara*,‡ Department of Chemistry, Graduate School of Science, Kyoto UniVersity, Kyoto 606, Japan, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan ReceiVed: August 8, 1997; In Final Form: October 17, 1997X
The electronic, vibrational and conformational relaxation of trans- and cis-1,3,5-hexatriene in solution have been investigated by femtosecond transient absorption spectroscopy. Upon excitation to the 1B state, the transient absorption is observed in the visible region, which mainly consists of an instantaneous rise (
