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Studies of Chiral Modifiers on γ-Cyclodextrin-Pyrene Complexes Using Fluorescence Lifetime Measurements

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Abstract:

This work focuses on the inclusion complexes of γ-cyclodextrin and pyrene as indicated by fluorescence lifetime analyses and the influences of chiral alcohols and diols on these complexes. The 2-butanol participates in the γ-cyclodextrin-pyrene complexation and produces a longer lifetime of complexed pyrene than the value determined for the complex in pure water. The enantiomeric 1,3-butanediol also produces a longer lifetime of complexed pyrene. However, a decrease in this lifetime is observed in the presence of racemic 1,3-butanediol. This study also involves an estimation of formation constants for γ-cyclodextrin-pyrene complexes by use of the fluorescence lifetime measurements.

Keywords: Absorbance; Chiral alcohols and diols; Fluorescence lifetime; Pyrene; γ-Cyclodextrin

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702953966046

Affiliations: 1: Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803; present address: Eli Lilly and Company, Indianapolis, IN 46285 2: Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803; present address: Isis Pharmaceuticals, Carlsbad, CA 92008 3: Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803

Publication date: December 1, 1995

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