✦ LIBER ✦

Quantitative analysis of the solvent effect on the relaxation processes of carotenoids showing dual emissive characteristics

✍ Scribed by Mamoru Mimuro; Umpei Nagashima; Shin-ichi Nagaoka; Yoshinobu Nishimura; Shinichi Takaichi; Tetzuya Katoh; Iwao Yamazaki

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 354 KB
Volume: 191
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)85291-h

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✦ Synopsis

The solvent effect on the fluorescence quantum yields of St (~1) and $2 (¢~2) states of carotenoids containing a keto group is examined. The relative yields (~b2/~1) are expressed exponentially as a function of the reciprocal of the dielectric constants of several non-polar solvents. This relationship can be explained by the energy gap law of internal conversion from the second excited state of carotenoids. This leads to the first quantitative study of solvent effects on the relaxation process of carotenoids.

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