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Charge interactions of water soluble oxo-titanium(IV) porphyrins with CTAC and SDS micelles
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- Authors
- Yong Hee Kim, Sang Don Jung, Yoon Jung Jang, Chan Im, Seog K. Kim, Dae Won Cho
- Issue Date
- 2013-10
- Citation
- Journal of Photochemistry and Photobiology A : Chemistry, v.270, pp.7-13
- ISSN
- 1010-6030
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- The interactions of anionic oxo-titanium (IV) meso-tetrakis(4- sulfonatophenyl)porphyrin and cationic oxo-titanium(IV) meso-tetrakis(1- methylpyridium-4-yl)porphyrin with anionic and cationic micelles were examined by Raman spectroscopy and transient absorption spectroscopy. The Raman bands of O TiIV porphyrins in the presence of surfactants with same charge were similar to those observed in a pure water solution. The characteristic Raman band was observed at 915 cm-1, which was assigned to the O Ti stretching mode of the 6-coordinated complex, O Ti (H2O) porphyrins. On the other hand, in the presence of oppositely charged surfactants, a markedly up-shifted Raman band was observed at 945 cm-1, which was assigned to the O Ti stretching mode of a 5-coordinated complex, O Ti porphyrins. O Ti porphyrins interact with oppositely charged surfactant micelles by losing the sixth axial ligand (H2O). The 5-coordinate complexes showed a shorter lifetime of the exited triplet state due to the lower lying quenching state. © 2013 Elsevier B.V.
- KSP Keywords
- Axial ligand, Cationic micelles, Pure water, Raman Spectroscopy, Raman bands, SDS micelles, Surfactant micelles, Transient absorption spectroscopy, Triplet state, Water solution, Water-soluble