title: Spectroscopic studies of inclusion complexes of 1-naphthol-4-sulfonate with beta-cyclodextrin in aqueous solution.
abstract: The photophysical properties of 1-naphthol-4-sulfonate (1N4S) in some solvents and in aqueous beta-cyclodextrin solution have been investigated. The effect of beta-cyclodextrin on the fluorescence quantum yield and on the proton transfer is examined. Fluorescence measurements show 1:1 inclusion of 1N4S in the beta-cyclodextrin cavity with an association constant of 108M(-1). NMR studies are used to study the inclusion phenomena and to provide information on the geometry of 1N4S inside the cavity of beta-cyclodextrin.
authors.affiliation: Department of Chemistry, College of Science, King Faisal University, P.O. Box 1759 Hofuf 31982, Saudi Arabia. sshihry@kfu.edu.sa
authors.forename: Shar S
authors.initials: SS
authors.lastname: Al-Shihry
mesh_terms: D006863:Hydrogen-Ion Concentration; D009281:Naphthalenes / Q000737:chemistry*; D010777:Photochemistry; D012996:Solutions / Q000737:chemistry; D013057:Spectrum Analysis; D013451:Sulfonic Acids / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: C504546:1-naphthol-4-sulfonate; D009281:Naphthalenes; D012996:Solutions; D013451:Sulfonic Acids; D047392:beta-Cyclodextrins