Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (8): 1136.

• Articles • Previous Articles     Next Articles

Voltammetric Study on Nickel(Ⅱ) Complex of meso-Tetra-(4-N-methylpyridyl) porphyrin in Aqueous Solution

HOU Jian-Min, GAO Xiao-Xia   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1993-09-29 Revised:1994-03-30 Online:1994-08-24 Published:1994-08-24

Abstract: The electrochemical behavior of nickel(Ⅱ)complex of meso-tetra(4-N-methylpyridyl)porphyrin(TMPyP):in aqueous solution has been investigated by cyclic voltammetric, stripping voltammetric and chronocoulometric techniques. Areductive complex wave exhibited at -1.0 V(vs. Ag/AgCl)in ammoniacal buffer solution(pH=9.0) may be attributed to the six-electron transfer reduction of both Ni(Ⅱ) and TMPyPin the complex.It has heen demonstrated that Ni(Ⅱ)in the complex is reduced to Ni(0).It was observed that no significant influence upon the cyclic voltammograms of NiTMPyPby the dissolved oxygen as compared with Mn2+, Fe2+, Co2+ metalloporphrins.

Key words: Water-soluble nickel-porphyrin, Effect of dissolved oxygen, Voltammetry

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