Study on 5-phenyl-2-(2'-phenyloxazol-5'-yl)1,3,4-oxadiazole and its 5-p-substituted phenyl derivatives

Abstract

5-Phenyl-2-(2'-phenyloxazol-5'-yl)-1,3,4-oxadiazole (I) and twelve of its 5-substituted Ph derivatives were synthesized. Their UV and fluorescence spectra, fluorescence quantum yields and laser conversion efficiencies were reported. It is shown that linear relationship exists between the absorption max. of the compounds and Hammett's substituent constants and that the four rings of each compound are more coplanar in S1 than in S0 state.

Key words: ULTRAVIOLET SPECTROPHOTOMETRY, QUANTUM YIELDS, EXCITED STATE, EXCITED STATE, MOLECULAR ORBITAL THEORY, SUBSTITUENT EFFECT, ENERGY TRANSFER, FLUOROSPECTROPHOTOMETRY, OXODIAZOLE P

CLC Number:

O621

Cite this article

GAO ZHENHENG;ZHAO AIHUA;WANG MINGZHEN. Study on 5-phenyl-2-(2'-phenyloxazol-5'-yl)1,3,4-oxadiazole and its 5-p-substituted phenyl derivatives[J]. Chin. J. Org. Chem., 1988, 8(1): 18-23.

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