標題: Triplet quantum chain process in the photoisomerization of 9-cis retinal as revealed by nanosecond time-resolved infrared spectroscopy
作者: Yuzawa, Tetsuro
Hamaguchi, Hiro-o
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
關鍵字: Triplet quantum chain;Photoisomerization;9-Cis retinal;Nanosecond time-resolved infrared spectroscopy;Photodynamics
公開日期: 15-七月-2010
摘要: The mechanism of the photoisomerization of 9-cis retinal has been studied by nanosecond time-resolved infrared spectroscopy. A cyclohexane solution of 9-cis retinal was photoexcited at 349 nm and the subsequent photodynamics were traced. A singular value decomposition (SVD) analysis of the time-resolved infrared data shows that there are two distinct isomerization pathways. One is the triplet pathway that takes place in the picosecond time regime from 9-cis to all-trans. The other involves the energy transfer between the all-trans triplet state and the 9-cis ground state with the resultant 9-cis triplet state subsequently reproducing the all-trans by fast isomerization on the triplet potential surface. This quantum chain process occurs in the microsecond time regime. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.molstruc.2010.04.031
http://hdl.handle.net/11536/5137
ISSN: 0022-2860
DOI: 10.1016/j.molstruc.2010.04.031
期刊: JOURNAL OF MOLECULAR STRUCTURE
Volume: 976
Issue: 1-3
起始頁: 414
結束頁: 418
顯示於類別:期刊論文


文件中的檔案:

  1. 000280244400057.pdf