Interaction Between Flourescence Chemosensors with Pyrene and Calf Thymus DNA

Abstract

Abstract: The quenching spectra of fluorescence chemosensors with pyrene by calf thymus DNA were studied in this work. The fluorescence quenching of both monomer and excimer of pyrene by ctDNA were investigated. The quenching constants of fluorescence chemosensors by ctDNA from SternVolmer equation were compared as following: for monomer, compound 2>compound 1>pyrenyl burytic acid>compound 3; for excimer, compound 2compound 3 . The stability constants of the interaction between fluorescence chemosensors and ctDNA were calculated according to equation (2). Of which the interaction between fluorescence chemosensors and ctDNA has been proposed according to their molecular structure, configuration, atom-atom distances and molecular size. The results obtained were discussed preliminarily.

Key words: Fluorescence chemosensor with pyrene, Calf thymus DNA, Molecular recognition, Fluorescence quenching

CLC Number:

O657

TrendMD:

LI Hua-Ping, WANG Peng-Fei, WU Shi-Kang . Interaction Between Flourescence Chemosensors with Pyrene and Calf Thymus DNA[J]. Chem. J. Chinese Universities, 1999, 20(6): 872.

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Interaction Between Flourescence Chemosensors with Pyrene and Calf Thymus DNA

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