title: Unique fluorescence behavior of rhodamine B upon inclusion complexation with novel bis(beta-cyclodextrin-6-yl) 2,2'-bipyridine-4,4'-dicarboxylate.
abstract: Newly synthesized bis(beta-cyclodextrin-6-yl) 2,2'-bipyridine-4,4'-dicarboxylate was found to induce an unusual fluorescence enhancement of Rhodamine B (RhB) upon complexation. This effect is attributable to the equilibium shift of RhB to the highly fluorescent carboxylate ion form, which is induced by the cooperative binding by two appropriately preorganized cyclodextrin units in the bis(beta-cyclodextrin). This sandwich complexation behavior was investigated by means of the fluorescence and 2D NMR spectroscopy.
authors.affiliation: Department of Chemistry, Nankai University, Tianjin, 300071, China. yuliu@public.tpt.tj.cn
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: S X
authors.initials: SX
authors.lastname: Liu
authors.forename: X D
authors.initials: XD
authors.lastname: Guan
authors.forename: T
authors.initials: T
authors.lastname: Wada
authors.forename: Y
authors.initials: Y
authors.lastname: Inoue
mesh_terms: D003505:Cyclodextrins / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry*; D047392:beta-Cyclodextrins
chemical_list: D003505:Cyclodextrins; D005456:Fluorescent Dyes; D011725:Pyridines; D012235:Rhodamines; D047392:beta-Cyclodextrins; C431043:bis(cyclodextrin-6-yl)2,2'-bipyridine-4,4'-dicarboxylate; C029773:rhodamine B