Pyrene Fluorescence-quenching by 1, 1, 2, 2-Tetrahydroheptadecafluorodecyl Pyridinium Chloride in Mixed Fluorocarbon-Hydrocarbon Micelles

概要

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The fluorescence-quenching of pyrene using 1, 1, 2, 2-tetrahydroheptadecafluorodecylpyridinium chloride (HFDePC) was studied in mixed micelles comprised of anionic fluorocarbon and hydrocarbon surfactants. HFDePC quenched pyrene emission in hydrocarbon pure micelles in the same manner as hexadecylpyridinium chloride (CPC) quencher. However, HFDePC failed almost entirely to quench in fluorocarbon and hydrocarbon mixtures at higher surfactant concentrations in contrast to the CPC quencher. The lost quenching of only HFDePC would probably have been due to the formation of second type micelles rich in fluorocarbon surfactant. Collisions between pyrene and HFDePC have been inhibited during the life span of excited pyrene due to the separated solubilization of probes into two kinds of mixed micelles. Quenching in mixed micelles increased with temperature due to greater miscibility between fluorocarbon and hydrocarbon species.
Japan Oil Chemists' Societyの論文