Intramolecular Charge Transfer Dual Fluorescence of p-Dialkylaminobenzoic Acids in n-Hexane

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (9): 1358.

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Intramolecular Charge Transfer Dual Fluorescence of p-Dialkylaminobenzoic Acids in n-Hexane

LIN Li-Rong, CHEN Hong, CHEN Ming-De, JIANG Yun-Bao, HUANG Xian-Zhi, CHEN Guo-Zhen

Department of Chemistry and the Key Laboratory of Analytical Science for Material and Life Chemistry of MOE, Xiamen University, Xiamen 361005, China

Received:1998-10-21 Online:1999-09-24 Published:1999-09-24

Abstract

Abstract: Dual fluorescence of a series of p-dialkylaminobenzoic acids in non-polar solvent n-hexane was observed.Picosecond time-resolved fluorescence and solvent polarity effect experiments demonstrated that the dual fluorescence is due to the excited state intramolecular charge transfer that produces the emissive charge transfer state in addition to the locally excited state.Dynamics data from the time-resolved fluorescence measurements indicated that the observation of the intramolecular charge transfer of p-dialkylaminobenzoic acids in nonpolar solvent is due to the low activation energy for the charge transfer process.

Key words: Intramolecular charge transfer, Dual fluorescence, p-Dialkylaminobenzoic acid, Non-polar solvent

CLC Number:

O657.3

TrendMD:

LIN Li-Rong, CHEN Hong, CHEN Ming-De, JIANG Yun-Bao, HUANG Xian-Zhi, CHEN Guo-Zhen. Intramolecular Charge Transfer Dual Fluorescence of p-Dialkylaminobenzoic Acids in n-Hexane[J]. Chem. J. Chinese Universities, 1999, 20(9): 1358.

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Intramolecular Charge Transfer Dual Fluorescence of p-Dialkylaminobenzoic Acids in n-Hexane

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