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학술지 Charge Interactions of Water Soluble Oxo-Titanium(IV) Porphyrinswith CTAC and SDS micelles
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저자
김용희, 정상돈, 장윤정, 임찬, 김석규, 조대원
발행일
201310
출처
Journal of Photochemistry and Photobiology A : Chemistry, v.270, pp.7-13
ISSN
1010-6030
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.jphotochem.2013.07.003
협약과제
13SE1900, 뉴런 및 수용체와 반도체 소자의 하이브리드 네트워크, 정명애
초록
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.
키워드
Micelle, Oxo-titanium(iv) porphyrin, Raman spectroscopy, Surfactant, Transient absorption spectroscopy
KSP 제안 키워드
Axial ligand, Cationic micelles, Pure water, Raman bands, Raman spectroscopy, SDS micelles, Surfactant micelles, Transient absorption spectroscopy, Triplet state, Water solution, Water-soluble