Spectroelectrochemical Characteristics of Tetra-(α-naphythyl) Tetrabenzoporphyrin Cobalt Complex

Abstract

Abstract: The electrochemical and spectroelectrochemical behaviour of tetra (α-naphythyl) tetrabenzoporphyrin cobalt complex, TNTBPCo, was studied by cyclic voltammetry, in situ FTIR and in situ UV-V is spectroelectrochemistry. The different oxidation states of the complex were obtained by controlling potential electrolysis at different potentials, and this electronic spectra and molecular vibration spectra were studied. The first and second redox processes of TNTBPCo(Ⅱ) correspond to the centre metal cobalt(Ⅱ) to form TNTBPCo(Ⅲ)⁺or TNTBPCo(Ⅰ)^-. The third reduction step is the addition of one electron to the porphyrin ring. The Soret band of TNTBPCo moves to low wavelength as the oxidation state of the complex decreases. The oxidation state sensitive bands of TNTBPCo were found to be in the 1660, 1476, 1142, 924 and 998 cm^-1and these bands shift to low frequency as the oxidation state of the centre metal decreases.

Key words: Tetra-(α-naphythyl)tetrabenzoporphyrin cobalt complex, Cyclic voltammetry, In situ UV-V is spectroelectrochemistry, In situ FTIR spectroelectrochemistry

CLC Number:

O611

TrendMD:

SHI Tong-Shun, ZHANG Xu-Guang, LIU Wei, JIA Bai-Wen, LIU Guo-Fa . Spectroelectrochemical Characteristics of Tetra-(α-naphythyl) Tetrabenzoporphyrin Cobalt Complex[J]. Chem. J. Chinese Universities, 1998, 19(7): 1026.

References

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