Use of Fluorescence Probes for Studying Kamlet−Taft Solvatochromic Parameters of Micellar System Formed by Binary Mixture of Sodium Dodecyl Sulfate and Triton-X 100

Fluorescence probes have been used to estimate Kamlet−Taft solvatochromic parameters α and π* representing hydrogen-bond donation ability and dipolarity/polarizability, respectively, of sodium dodecyl sulfate (SDS)−Triton X 100 (TX100) mixed aggregates with varying compositions. The hydrogen-bond do...

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Veröffentlicht in:The journal of physical chemistry. B 2008-03, Vol.112 (10), p.2868-2873
Hauptverfasser: Deb, Nipamanjari, Shannigrahi, Mrinmoy, Bagchi, Sanjib
Format: Artikel
Sprache:eng
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Zusammenfassung:Fluorescence probes have been used to estimate Kamlet−Taft solvatochromic parameters α and π* representing hydrogen-bond donation ability and dipolarity/polarizability, respectively, of sodium dodecyl sulfate (SDS)−Triton X 100 (TX100) mixed aggregates with varying compositions. The hydrogen-bond donation ability of the mixed aggregate has been found to increase with SDS composition, whereas the dipolarity/polarizability parameter decreases. The relative contribution of electrostatic and steric effect toward the total free energy of micellization have been calculated for the mixture. The solvatochromic parameters α and π* depend linearly on the total free energy of micellization, indicating a correlation between aggregational and solvatochromic properties.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp710299t