Degree of Micelle Ionization and Micellar Growth for Gemini Surfactants Detected by 6-Methoxy-N-(3-sulfopropyl)quinolinium Fluorescence Quenching
作者： Keiko Kuwamoto , Tsuyoshi Asakawa , Akio Ohta , Shigeyoshi Miyagishi
DOI: 10.1021/LA0509706
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摘要: The degree of micelle ionization gemini surfactants has been investigated by using halide-sensitive fluorescence probes (e.g., 6-methoxy-N-(3-sulfopropyl)quinolinium (SPQ)). is quenched the free bromide ions dissociated from surfactants. increased with increasing spacer chain length, but it decreased surfactant concentration. Stern−Volmer plot gave two inflection points (i.e., not only at cmc also far above cmc). second point suggested spherocylindrical micellar growth decreases in ionization. was depressed whereas enhanced tail length. micelles depended on concentration and length change SPQ spectra upon hydrogenation utilized to evaluate solubilization site ...
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