A STUDY ON THE PHOTOPHYSICAL BEHAYVIOR OF 2-PYRAZOLINE COMPOUNDS-COMPETITION OF TWO MECHANISMS IN THE PROCESS OF PHOTOINDUCED INTRAMOLECULAR CHARGE TRANSFER

doi:10.7517/j.issn.1674-0475.1994.01.80

Imaging Science and Photochemistry ›› 1994, Vol. 12 ›› Issue (1): 80-85.DOI: 10.7517/j.issn.1674-0475.1994.01.80

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A STUDY ON THE PHOTOPHYSICAL BEHAYVIOR OF 2-PYRAZOLINE COMPOUNDS-COMPETITION OF TWO MECHANISMS IN THE PROCESS OF PHOTOINDUCED INTRAMOLECULAR CHARGE TRANSFER

Yan ZHENG-LIN, WU SHI-KANG

Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P. R. China

Received:1993-02-09 Revised:1993-06-01 Online:1994-02-20 Published:1994-02-20

Abstract

Abstract: In this work,a new kind of 1,3,5-triaryl-2-pyrazoline compound has been synthesized.Their photophysical behavior including solvent polarity and acid-base effects onthe fluorescence spectra was investigated. Results indicated that this compound not onlypossesses strong solvatochromic effect but also can be used as an acid-base indicator in non-aqueous solvents.Results also proved in further that a competition of two mechanisms of intramolecular charge transfer was existed indeed in the excited molecule of substitutedtriaryl pyrazolines.

Key words: 1,3,5-triaryl-2-pyrazoline, photoinduced charge transfer, non-aqueousacid-base indicator, fluorescence quantum yield

Yan ZHENG-LIN, WU SHI-KANG. A STUDY ON THE PHOTOPHYSICAL BEHAYVIOR OF 2-PYRAZOLINE COMPOUNDS-COMPETITION OF TWO MECHANISMS IN THE PROCESS OF PHOTOINDUCED INTRAMOLECULAR CHARGE TRANSFER[J]. Imaging Science and Photochemistry, 1994, 12(1): 80-85.

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A STUDY ON THE PHOTOPHYSICAL BEHAYVIOR OF 2-PYRAZOLINE COMPOUNDS-COMPETITION OF TWO MECHANISMS IN THE PROCESS OF PHOTOINDUCED INTRAMOLECULAR CHARGE TRANSFER

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