Spectral Properties and Deactivation Processes of Anionic Porphyrin Coupled with TiO2 Nanostructure

Meso -tetrakis (4-sulphonatophenyl)porphyrin (TSPP) and its complex with TiO 2 were studied by absorption, fluorescence, and steady-state and time-resolved photothermal spectroscopy. A TiO 2 –TSPP complex was obtained by covalent bonding of anionic porphyrin with the nanostructural form of TiO 2 . T...

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Bibliographic Details
Published in:International journal of thermophysics 2010, Vol.31 (1), p.163-171
Main Authors: Olejarz, B., Bursa, B., Szyperska, I., Ion, R.-M., Dudkowiak, A.
Format: Article
Language:English
Subjects:
Bonding
Classical Mechanics
Condensed Matter Physics
Covalence
Industrial Chemistry/Chemical Engineering
Nanocomposites
Nanomaterials
Nanostructure
Physical Chemistry
Physics
Physics and Astronomy
Porphyrins
Spectra
Titanium dioxide
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Summary:Meso -tetrakis (4-sulphonatophenyl)porphyrin (TSPP) and its complex with TiO 2 were studied by absorption, fluorescence, and steady-state and time-resolved photothermal spectroscopy. A TiO 2 –TSPP complex was obtained by covalent bonding of anionic porphyrin with the nanostructural form of TiO 2 . The TiO 2 colloidal carriers modifying the thermal energy distribution and considerably influencing the photophysical processes were found to lead to changes in the population of the porphyrin singlet and triplet states, resulting in singlet oxygen generation and/or electron transfer.
ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-009-0606-2