Processes of photo-induced electron transfer on titanosilica surfaces
Анотація
The effect of silica-titania mixed oxide surfaces on photonics of adsorbed acenes (anthracene, pyrene, and pyrenemethanole) has been studied by fluorescence spectroscopy and laser flash-photolysis. It is shown that the preparation method (sol-gel or impregnation) influences on the reactivity of mixed TiO2/SiO2. The kinetics have been examined of photoinduced electron transfer and fluorescence quenching of adsorbed acenes in the presence of N, N-dimethylaniline (DMA) on the titania-silica powders and colloids. A direct proof was found of electron transfer from adsorbed molecules onto titanium dioxide, when the latter interacts with pyrenemethanole and antracene-N, N-dimethylaniline molecular pair as light undergone.
Посилання
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