A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Category: imidazoles-derivatives, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 693-98-1, Name is 2-Methyl-1H-imidazole, molecular formula is C4H6N2. In an article, author is Karunakaran, Chockalingam,once mentioned of 693-98-1.
Sensing rutile TiO2 through fluorescence of imidazole derivative
A new kind of imidazole derivative, 4,5-dipheny1-2(E)-styryl-1H-imidazole, has been synthesi zed. UV-vis absorption and fluorescence spectral studies show the interaction of the imidazole derivative with anatase and rutile phases of nanocrystalline TiO2. Anatase quenches the fluorescence emission of the imidazole derivative due to charge injection from the excited singlet state of imidazole derivative to the conduction band of anatase. On the other hand rutile enhances the fluorescence probably due to lowering of LUMO and HOMO levels of the imidazole derivative on ducking of the styryl moiety of tilt imidazole molecule into the void space of rutile TiO2, the HOMO and LUMO energies have been deduced from cyclic voltammetric results. The selective enhancement of fluorescence is useful to deduct and estimate nanocrystalline TiO2 rutile. (C) 2012 Elsevier B.V. All rights reserved.
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