Journal
CARBOHYDRATE RESEARCH
Volume 346, Issue 1, Pages 35-42Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2010.09.031
Keywords
Anthracene; beta-Cyclodextrins; Formation constants; Fluorescent sensors
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A new fluorescent beta-cyclodextrin has been synthesized by coupling an anthracene moiety to the cyclic oligosaccharide via click chemistry. The influence of the triazole spacer was compared to the simple amino and amido linkers. While a sensing ability toward adamantan-1-ol was observed with the latter two spacers, the absence of inclusion capacity prevents the triazole modified cyclodextrin from showing any fluorescence variations. The difference in the binding behaviors studied by Isothermal Titration Calorimetry, UV-vis and fluorescence spectroscopies, was highlighted by the NOESY NMR spectra of the modified cyclodextrins: whereas a free cavity was observed for the amino and amido linkers, an important obstruction was obtained in the case of the triazole. (C) 2010 Elsevier Ltd. All rights reserved.
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