Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Interaction of Cationic Dye and Anionic Detergent above and below the Critical Micelle Concentration as Revealed by Fluorescence Characteristics
Hiroyasu SatoMasahiro KawasakiKazuo KasataniNobuaki NakashimaKeitaro Yoshihara
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1983 Volume 56 Issue 12 Pages 3588-3594

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Abstract

The interaction of 3,3′-diethylthiacarbocyanine iodide, a cationic dye, with sodium dodecyl sulfate (SDS), an anionic detergent, was studied as a function of the concentration of SDS ([SDS]) above and below the critical micelle concentration (cmc). The [SDS]-dependent fluorescence spectra, quantum yield and decay measurements revealed the deaggregation of the dye above the cmc and the formation of the dye–SDS aggregate below the cmc.

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