Research of the mechanism of acetic acid fluorescence quenching
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1.
Department of Physics, Xuzhou Normal University, Xuzhou, 221009;
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2.
School of Science, Nanjing University of Science & Technology, Nanjing, 210094
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Received Date:
2003-06-24
Accepted Date:
2003-08-29
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Abstract
Analyses of the mechanisms of acetic acid emitting fluorescence and fluorescence quenching have been made in theory.The results indicate that acetic acid solutions can emit visible fluorescence when induced by 253.7nm UV light,and fluorescence quenching occurs along with the alteration of solution concentration.It is thought that fluorescence dynamic quenching process could take into account the intersystem transition of (n,π *) to (π,π *),and the quenching constant is calculated in this paper.Investigation on the native fluorescence spectrum and its characteristics will contribute to the study of other molecules fluorescence spectra when acetic acid serves as solute,hydrolysis catalyst and food additive.
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