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

Volume 49, Number 12 (Dec. 1995) Page 1762-1765

Will, A. Yvette; Schuette-Parsons, Jodi M.; Agbaria, Rezik A.; Warner, Isiah M.


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.