STUDIES ON THE OPTICAL PROPERTIES AND PHOTODIMERIZATION REACTION MECHANISM OF TRANS-1,2-BIS[2-(5-SUBSTITUED PHENYLOXAZOLYL)]ETHENE

doi:10.7517/j.issn.1674-0475.1997.01.19

Imaging Science and Photochemistry ›› 1997, Vol. 15 ›› Issue (1): 19-24.DOI: 10.7517/j.issn.1674-0475.1997.01.19

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STUDIES ON THE OPTICAL PROPERTIES AND PHOTODIMERIZATION REACTION MECHANISM OF TRANS-1,2-BIS[2-(5-SUBSTITUED PHENYLOXAZOLYL)]ETHENE

ZHANG Wenqin¹, WANG Mingzhen²

1. Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China;
2. Department of Chemistry, Nankai University, Tianjin 300071, P. R. China

Received:1996-04-02 Revised:1996-07-29 Online:1997-02-20 Published:1997-02-20

Abstract

Abstract: The radiative lifetimes and photodimerization quantum yields of trans-1,2-bis[2-(5-phenyloxazolyl)]ethene(POEOP) and its derivatives were measured in different solvents. Their fluorescence and nonradiative rate constants were calculated. The substituent effects and solvent properties on the photodimerization reaction were discussed. It is found that increasing the polarity of solvent is advantageous to the photodimerization reaction but it is disadvantageous in heavy atom solvent, which means that the dimerization occurs by a singlet mechanism.

Key words: oxazole, fluorescence lifetime, photodimerization reaction

ZHANG Wenqin, WANG Mingzhen. STUDIES ON THE OPTICAL PROPERTIES AND PHOTODIMERIZATION REACTION MECHANISM OF TRANS-1,2-BIS[2-(5-SUBSTITUED PHENYLOXAZOLYL)]ETHENE[J]. Imaging Science and Photochemistry, 1997, 15(1): 19-24.

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STUDIES ON THE OPTICAL PROPERTIES AND PHOTODIMERIZATION REACTION MECHANISM OF TRANS-1,2-BIS[2-(5-SUBSTITUED PHENYLOXAZOLYL)]ETHENE

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