Identification of Oblique and Coplanar Inclined Fluorescent J-Dimers in Rhodamine 110 Doped Sol-Gel-Glasses
作者： Francisco del Monte , David Levy
DOI: 10.1021/JP991491G
关键词: Molecule 、 Fluorescence 、 Porosity 、 Polar 、 Adsorption 、 Sol-gel 、 Doping 、 Photochemistry 、 Excitation 、 Materials science
摘要: Rhodamine 110 (R110) fluorescent J-dimers have been first observed in doped silica gel-glasses made by sol-gel process. The R110 photophysical properties such as excitation/fluorescence spectra and lifetimes were studied a wide range of dye concentrations. It has determined that the formation dimers is consequence adsorption on porous surface gel-glasses. geometry, which established angle formed between longitudinal axis molecule gel surface, either or nonfluorescent H-dimers. Since was related to concentration, transition from H-dimers found for specific concentration. Formation with preferential oblique coplanar inclined configuration induced change polar character surface.
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