Characterisation of Porphyrin-TiO2 Complex Using Raman Spectroscopy and Electron Paramagnetic Resonance |
| M. Kotkowiaka, H. Manikowskia, M. Wieczorowskib and A. Dudkowiaka
aInstitute of Physics, Poznań University of Technology, Nieszawska 13a, 61-965 Poznań, Poland bInstitute of Mechanical Technology, Poznań University of Technology, Piotrowo 3, 61-965 Poznań, Poland |
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| A complex of meso-tetrakis (4-sulphonato-phenyl) porphyrin covalently linked to titanium dioxide has been studied. Illumination of the complex with visible light was shown to result in formation of cationic radicals of the porphyrin. Shape and kinetics of the electron spin resonance signals were analysed which permitted calculation of spectroscopic parameters characterising the photoinduced process of the radicals formation. The dye-semi-conductor complex was thoroughly characterised to indicate its possible applications. |
| DOI: 10.12693/APhysPolA.122.353 PACS numbers: 33.20.Fb, 78.30.Fs, 33.35.+r |