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Photophysical properties of TICT molecule adsorbed on semiconductor titania–silica colloids

Paper ID Volume ID Publish Year Pages File Format Full-Text
28843 44096 2006 6 PDF Available
Title
Photophysical properties of TICT molecule adsorbed on semiconductor titania–silica colloids
Abstract

The effect of semiconductor titania–silica colloids on the fluorescent properties of adsorbed 4-(4′-N,N-diethylaminophenyl-3,5-dimethyl-1,7-diphenyl-bis-pyrazolo-[3,4-b, 3′-e]-pyridine (DEA-DMPP) has been studied by steady-state and time-resolved fluorescence spectroscopy. 3,5-dimethyl-1,7-diphenyl-bis-pyrazolo-[3,4-b,3′-e]-pyridine (DMPP) in presence of N,N-dimethylaniline has been employed as the system simulating the separate electron acceptor and electron donor subunits of DEA-DMPP molecule. Silica and titania–silica colloid surfaces inhibited the formation of the intramolecular charge transfer state (ICT) of adsorbed DEA-DMPP due to formation of H-bonds between the amino group of DEA-DMPP and OH-groups localized on the surface.

Keywords
Semiconductor titania–silica colloids; Fluorescence of DEA-DMPP; Charge transfer state
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 177, Issue 1, 1 January 2006, Pages 83–88
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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