Solid-Surface Fluorescence Characteristics and X-Ray Crystal Structures of Inclusion Compounds of Imidazoanthraquinol-type Fluorescent Host with Ethanol and 1,4-Dioxane

The crystal structures of host-guest inclusion compounds of the title fluorescent host with ethanol and 1,4-dioxane were elucidated by X-ray crystal analysis. The solid-surface fluorescence spectra of the inclusion crystals were also measured. The fluorescence emission of the host was dramatically enhanced upon enclathration of the guest molecules.