Femtosecond transient absorption spectroscopy of non-substituted photochromic spirocompounds

被引：56

作者：

Antipin, SA ^{[1
]}

Petrukhin, AN ^{[1
]}

Gostev, FE ^{[1
]}

Marevtsev, VS ^{[1
]}

Titov, AA ^{[1
]}

Barachevsky, VA ^{[1
]}

Strokach, YP ^{[1
]}

Sarkisov, OM ^{[1
]}

机构：

[1] Russian Acad Sci, NN Semenov Chem Phys Inst, OM Sarkisov Lab, Moscow 117977, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 331卷 / 5-6期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/S0009-2614(00)01213-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Primary processes in spironaphtopyran (SNP), spironaphtoaxazine (SNO) and spirophenantrooxazine (SPO) after excitation by the femtosecond light pulse with the carrier wavelength 308 nm were studied by the absorption 'pump-probe' method with femtosecond time resolution. Probing was performed by means of the super-continuum light pulse with the carrier wavelength in the range 420-580 nm. Registration of the photoinduced absorption spectra dynamics allowed to observe time evolution of all intermediates. It appeared that photoinduced transformation of all three compounds has the same mechanism. Kinetic scheme is suggested and all rate constants entering this scheme are determined. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：378 / 386

页数：9

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