Fluorescence Sensing Behavior of Thin-films of Benzofuranoquinol Clathrate Host upon Exposure to Various Gaseous Amines

Abstract

Abstract The benzofuranoquinol clathrate host exhibits color and fluorescence changes upon exposure to various gaseous amines both in the crystalline state and in the thin-film state. The decrease of long-wavelength absorption and the dramatic fluorescence enhancement with blue-shift of emission maximum depending on the enclathrated amine molecules were observed. The response time for the optical sensing was greatly improved by using the host in the thin-film state.