Date of Award

6-2000

Document Type

Union College Only

Degree Name

Bachelor of Science

Department

Chemistry

Language

English

Abstract

Because of their rich intercalation chemistry and ability to enhance the thermal stability of the included guest, layered silicate clays are excellent hosts for the fabrication of organic/inorganic nanocomposites. Composites of hectorite and tris(2, 2' -bipyridine) ruthenium(U), Ru(bpy), 3 2+, have attracted attention owing to their potential applications as glucose and oxygen based chemical sensors. Previous studies on the fluorescence behavior of Ru(bpy)3 2+ complexes in aqueous colloidal clay suspensions have shown enhanced emission traces. We report here the first study of the fluorescence responses of Ru(bpy) 3 2+ exchanged thin clay films. Variation of guest concentration and exposure time and choice of host clay framework have significant impacts on the resultant fluorescence response. These parameters may be used to optimize the observed emission and excitation spectra of organic/inorganic nanocomposites. Powder X-ray diffraction (XRD) was used to verify intercalation of the Ru(bpy )3 2+ into the clay framework. These studies may enhance our understanding of fundamental host-guest interactions, chiral templating, and the intercalation process.

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