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Radiative and non-radiative decay processes of the excited state of the colored form of photochromic furylfulgide

โœ Scribed by J. Takeda; T. Tayu; S. Kurita; Y. Yokoyama; Y. Kurita; T. Kuga; M. Matsuoka

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
468 KB
Volume
220
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The time evolution of the luminescence of the colored form of a furylfulgide dispersed at various concentrations in a poly (methyl methacrylate ) film was measured as a function of the luminescence photon energy. The observed decay time of the luminescence is about l-2 ns and one order of magnitude shorter than the radiative lifetime ( 14 ns) estimated from the absorption intensity. The decay time is independent of temperature below 77 K. These results suggest that the non-radiative tunneling process from the excited state to the ground state is responsible for the decay.

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