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Photophysics of aryl substituted 1,3,4-oxadiazoles: The triplet state of 2.5-diphenyl-1,3,4-oxadiazole

✍ Scribed by Claude Rulliere; Pierre C. Roberge

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
538 KB
Volume
97
Category
Article
ISSN
0009-2614

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✦ Synopsis

4 theoretics1 spprosch using a SCF Ci method has been used to analyse the Tt -T,, absorption spectrum of Z,Sdiphcnyl-1,3.4-oxadiazole. In its fist rriplct state in ;1 non-polarsolvent, thismoleculcis strongly non-plsnar_This conclusion is corroborated by comparison of the fluorescence and phosphorescence spectm. -4 change of geometry, towards ;! more planar conformation, appears to occur in an alcoholic solution_ It is su sgzstcd that np autocompletes are formed in the triplet state. Conflicting results published for the T-T sbsorption must be attributed to sn impurity_

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