Picosecond Time-Resolved Resonance Raman Spectroscopy and Vibrational Analysis in Spirooxazine Photochromism
作者:
J. Aubard,
F. Maurel,
G. Buntinx,
R. Guglielmetti,
G. Levi,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 345,
issue 1
页码: 203-208
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008023919
出版商: Taylor & Francis Group
关键词: ps TR3spectroscopy;indolinospironaphthoxazine;isomer structure
数据来源: Taylor
摘要:
Picosecond time-resolved resonance Raman (TR3) spectroscopy was used to study the dynamics and structure of transient species involved in the photochromic process in solution of 1,3,3-trimethylspiro[indoline-naphthoxazine]. TR3spectra recorded in n-hexane, at 10 ps and 50 ps time-delays were compared with those obtained on the ns-ms timescale and to the resonance Raman spectrum of a permanent opened form. These data and the results of a detailedab initiovibrational analysis, have allowed us to determine the structure of the tran-soid isomer already present at 10 ps and to precise the photochromic mechanism.
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