C. Karunakaran, J. Jayabharathi, K. Jayamoorthy
Nov 1, 2013
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0
Influential Citations
27
Citations
Journal
Sensors and Actuators B-chemical
Abstract
Abstract 2-(4-Fluorophenyl)-1-phenyl-1H-benzo[d]imidazole (FPPBI) has been synthesized and characterized by 1 H NMR, 13 C NMR, mass spectral and single crystal XRD studies. Absorption and fluorescence spectral studies have been employed to investigate the interaction of FPPBI with the TiO 2 (A), TiO 2 (H), TiO 2 (P25) and TiO 2 (R). The fluorescence of FPPBI is efficiently quenched by TiO 2 (A), TiO 2 (H) and TiO 2 (P25) nanoparticles owing to charge injection from the excited singlet state of FPPBI to the conduction band of the TiO 2 nanoparticles. Surprisingly TiO 2 (R) enhances the fluorescence due to lowering of LUMO and HOMO levels of the FPPBI.