Femtosecond dynamics of excited-state intramolecular proton transfer in o-tosylaminobenzaldehyde

被引：4

作者：

Khimich, M. N. ^{[1
]}

Nadtochenko, V. A. ^{[2
]}

Popov, L. D. ^{[3
]}

Burlov, A. S. ^{[3
]}

Ivanov, V. L. ^{[1
]}

Denisov, N. N. ^{[2
]}

Gostev, F. E. ^{[2
]}

Shelaev, I. V. ^{[2
]}

Sarkisov, O. M. ^{[2
]}

Uzhinov, B. M. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Moscow 119991, Russia

[2] Russian Acad Sci, NN Semenov Chem Phys Inst, Moscow 119991, Russia

[3] S Fed Univ, Rostov Na Donu 344006, Russia

来源：

HIGH ENERGY CHEMISTRY | 2012年 / 46卷 / 04期

关键词：

N-SUBSTITUTED 2-(2-AMINOPHENYL)-4H-3,1-BENZOXAZIN-4-ONES; FLUORESCENCE PROBE; COMPLEXES; SPECTROSCOPY; MEDIA;

D O I：

10.1134/S001814391204008X

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：

Dynamics of excited-state intramolecular proton transfer (ESIPT) in o-tosylaminobenzaldehyde has been studied by femtosecond absorption spectroscopy with a time resolution of 30 fs. The characteristic time of this process is similar to 100 fs. Differential absorption rate curves exhibit oscillations that are consistent with theoretically predicted ESIPT-promoting vibrational modes. Efficient nonradiative deactivation with a rate constant of 6.25 x 10(10) s(-1) occurs in the excited product of proton transfer, with internal rotation followed by intersystem crossing being one of the feasible deactivation pathways.

引用

页码：247 / 252

页数：6

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