Confinement of 4,4-diaminodiphenyl Sulfone by γ -CD in Micellar Environment: a Spectroscopic Investigation

Overview

Journal J Fluoresc

Specialties Biophysics
Chemistry

Date 2013 Dec 17

PMID 24337874

Authors

Prosenjit Bhattacharya

Sankar Chakravorti

Affiliations

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Abstract

This paper reports the double confinement of 4,4-diaminodiphenyl sulfone (Dapsone) inside γ-cyclodextrin (CD) in presence of surfactants (cationic, anionic and nonionic) using steady-state and time-resolved fluorescence spectroscopy. Interpretation of fluorescence spectra, fluorescence anisotropy and time resolved fluorescence decay of the γ-CD • Dapsone•micellar system hints at lesser microviscosity and the partial release of the probe molecule from the supramolecular host-guest complex in ionic micelles, of which greater in cationic micelles, but due to greater restriction and rigidity in presence of non-ionic micelle makes the probe more rigidly inside CD. Changes in computed rotational decay also corroborate the above findings.

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