THE INFLUENCE OF CYCLODEXTRIN ON THE PHOTOPHYSICAL PROPERTIES OF α,ω-BISCOUMARIN LONG-CHAIN COMPOUNDS

doi:10.7517/j.issn.1674-0475.1996.04.306

Abstract

Abstract: With the aids of different spectra and the single photon counting technique,the effect of concentration,temperature, and environment on the excimer formation of α,ω-biscoumarin long chain compound in the presence of CD have been investigated in this work.Results indicate that the influence of cyclodextrin on the photophysical properties of title compounds is different,i.e.,β-CD only enhances the fluorescence intensity of the coumarin monomer, whereas γ-CD could decrease the activation energy for the excimer formation as well as extend its life time.

Key words: coumarin, cyclodextrin, excimer, long-chain compound

LIU Tianjun, WU Shikang. THE INFLUENCE OF CYCLODEXTRIN ON THE PHOTOPHYSICAL PROPERTIES OF α,ω-BISCOUMARIN LONG-CHAIN COMPOUNDS[J]. Imaging Science and Photochemistry, 1996, 14(4): 306-313.

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THE INFLUENCE OF CYCLODEXTRIN ON THE PHOTOPHYSICAL PROPERTIES OF α,ω-BISCOUMARIN LONG-CHAIN COMPOUNDS

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