期刊
CHEMICAL PHYSICS LETTERS
卷 391, 期 4-6, 页码 297-301出版社
ELSEVIER
DOI: 10.1016/j.cplett.2004.04.093
关键词
-
Relaxation dynamics of an azobenzene derivative with push-pull type substituents trans-(4-methoxyphenylazo)-4'-nitrobenzene (trans-MNAB) upon the S-2 <-- S-0 excitation in acetonitrile was studied by sub-picosecond time-resolved transient absorption spectroscopy which exhibited a fast formation of the lowest excited singlet (S-1) state within I ps and a vibrational cooling of the ground state (S-0). All the events of the S-1 state completed within <5.0-6.0 ps, suggesting that isomerization of trans-MNAB proceeds mainly via the S, state. The absence of remarkable substituent effect on the dynamics of the excited states strongly suggested the absence of the rotational cis-trans isomerization mechanism via the S-2 state. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据