BASED ON THE FLUORESCENCE QUENCHING OF ACRIDINE DYES FOR DETERMINATION OF HALOGEN ION

doi:10.7517/j.issn.1674-0475.2002.05.335

Abstract

Abstract: Two kinds of acridine and acridine orange salts and acridine containing terpolymer were synthesized in this work.The fluorescence quenching of these emissive compounds in solution by halogen anions was studied carefully.It is found that the fluorescence of these compounds can be quenched by iodine ion easier than chloride ion which indicates that this kind of compounds may be used as a sensor for detection of iodide in the presence of chloride.As for the mechanism of fluorescence quenching of acridine it was found that the quenching is not dependent on the heavy atom effect to form triplet state of acridine,but on the fail in the intra molecular charge transfer process of excited acridine by halogen ion introduced.

Key words: acridine dye, acridine orange dye, halogen ion, ionic probe, fluorescence quenching

CLC Number:

YUE Ling, JIANG Yong-cai, ZHANG Xiao-hong, WU Shi-kang. BASED ON THE FLUORESCENCE QUENCHING OF ACRIDINE DYES FOR DETERMINATION OF HALOGEN ION[J]. Imaging Science and Photochemistry, 2002, 20(5): 335-342.

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