title: Superstructures of fluorescent cyclodextrin via click-reaction.
abstract: Mono-(6-azido-6-deoxy)-β-cyclodextrin (CD) was covalently attached to an alkyne-modified 5-methyl-2-(pyridin-2-yl)thiazol-4-ol yielding a fluorophore containing CD in a click-type reaction. Intermolecular complexes were formed by poly(host-guest)-interactions. The supramolecular structures were characterized by (1)H NMR-ROESY spectroscopy, dynamic light scattering, UV-vis spectroscopy, fluorescence spectroscopy, and asymmetric flow field-flow fractionation. By adding potassium adamantane-1-carboxylate, the thiazol dye is displaced from the CD-cavity and the elongated noncovalent polymeric structures collapse.
authors.affiliation: Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Duesseldorf, Universitaetsstraße 1, 40225 Duesseldorf, Germany.
authors.forename: Arkadius
authors.initials: A
authors.lastname: Maciollek
authors.forename: Helmut
authors.initials: H
authors.lastname: Ritter
authors.forename: Rainer
authors.initials: R
authors.lastname: Beckert
keywords: cyclodextrins; fluorescent dye; host–guest interaction; supramolecular polymer