Abstract

Naphthalene derivatives have the capability of forming higher order complexes than the typical 1:1 stoichiometry with all three of the common cyclodextrins (alpha, beta, and gamma). The 2-acetylnaphthalene (2-AN)/gamma-cyclodextrin (gamma-CD) system exhibits a long wavelength fluorescence emission at higher gamma-CD concentrations, which has been assigned to an excimer band from bound 2-AN dimer. On the basis of the fact that only free 2-AN and the bound dimer fluoresce in this system, we have proposed mathematical models to decide whether the dimer formula is (2-AN)<sub>2</sub>/gamma-CD or (2-AN)<sub>2</sub>/(gamma-CD)<sub>2</sub>. Our analysis indicates that the latter formula is the correct one. This result is unanticipated, given the fact that a single gamma-CD cavity could accommodate two naphthalene rings.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription