title: Confinement of 4,4-diaminodiphenyl sulfone by γ -CD in micellar environment: a spectroscopic investigation.
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.
authors: Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India.
authors: Prosenjit
authors: P
authors: Bhattacharya
authors: Sankar
authors: S
authors: Chakravorti
mesh_terms: D000838:Anions / Q000737:chemistry*; D002412:Cations / Q000737:chemistry*; D003622:Dapsone / Q000737:chemistry*; D005453:Fluorescence; D005454:Fluorescence Polarization; D005456:Fluorescent Dyes; D008823:Micelles; D015394:Molecular Structure; D013050:Spectrometry, Fluorescence; D013501:Surface-Active Agents / Q000737:chemistry*; D014783:Viscosity; D047408:gamma-Cyclodextrins / Q000737:chemistry*
chemical_list: D000838:Anions; D002412:Cations; D005456:Fluorescent Dyes; D008823:Micelles; D013501:Surface-Active Agents; D047408:gamma-Cyclodextrins; D003622:Dapsone; C023792:gamma-cyclodextrin