Role of twisted intramolecular charge-transfer states in the decay of 2-(2′-hydroxyphenyl)benzothiazole following excited-state intramolecular proton transfer
- 1 January 1994
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 90 (1), 59-67
- https://doi.org/10.1039/ft9949000059
Abstract
The photophysics of 2-(2′-hydroxyphenyl)benzothiazole in non-polar and alcoholic solution is reported for temperatures in the range 96–298 K. In all solvents a rise in both fluorescence quantum yield and lifetime is observed as the temperature is decreased. It is proposed that a viscosity-dependent non-radiative process leading to a non-emissive, twisted excited state accounts for these observations. Results of quantum chemical calculations are consistent with this interpretation.Keywords
This publication has 24 references indexed in Scilit:
- Studies of the triplet state of 2-(2′-hydroxyphenyl) benzothiazoleChemical Physics Letters, 1991
- Mechanism of the ground-state reverse proton transfer of 2-(2-hydroxyphenyl)benzothiazoleThe Journal of Physical Chemistry, 1990
- Excited-state intramolecular proton transfer in polar solutions of 2-(2′-hydroxyphenyl)benzothiazoleChemical Physics Letters, 1988
- Femtosecond spectroscopy of excited-state proton transfer in 2-(2′-hydroxyphenyl)benzothiazoleChemical Physics Letters, 1988
- Excited-state proton transfer in 2-(2'-hydroxyphenyl)benzothiazole: formation of the anion in polar solventsChemical Physics Letters, 1987
- A comprehensive investigation of the photophysics and photochemistry of salicylideneaniline and derivatives of phenylbenzothiazole including solvent effectsThe Journal of Physical Chemistry, 1987
- Transient absorption and two-step laser excitation fluorescence studies of photoisomerization in 2-(2-hydroxyphenyl)benzoxazole and 2-(2-hydroxyphenyl)benzothiazoleJournal of the American Chemical Society, 1985
- Solid-state fluorescent photophysics of some 2-substituted benzothiazolesJournal of the Chemical Society, Perkin Transactions 2, 1984
- Excited-state intramolecular proton transfer and vibrational relaxation in 2-(2-hydroxyphenyl)benzothiazoleThe Journal of Physical Chemistry, 1983
- Intramolecular proton transfer reactions in excited fluorescent compoundsThe Journal of Physical Chemistry, 1970