1 Introduction It is rather difficult for the rare earth ions to form complex with water-soluble porphyrins （e.g.TPPS<sub>4</sub>） in aqueous solution. In this note the formation of Eu（Ⅲ）TPP is conduc...1 Introduction It is rather difficult for the rare earth ions to form complex with water-soluble porphyrins （e.g.TPPS<sub>4</sub>） in aqueous solution. In this note the formation of Eu（Ⅲ）TPP is conducted by introducing equal-molar concentrations of Eu（ClO<sub>4</sub>）<sub>3</sub> and H<sub>2</sub>TPP into an acetone solution with 0.1 mol/L TEAP to obtain the 1: 1 complex. This complex is reduced with a peak potential at -0.28 V （vs. Ag/AgCl） in voltammetry, and it is found out that Eu<sup>3+</sup>-TPP is reduced to Eu<sup>2+</sup>-TPP. The height of the peak is directly propor-展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘1 Introduction It is rather difficult for the rare earth ions to form complex with water-soluble porphyrins （e.g.TPPS<sub>4</sub>） in aqueous solution. In this note the formation of Eu（Ⅲ）TPP is conducted by introducing equal-molar concentrations of Eu（ClO<sub>4</sub>）<sub>3</sub> and H<sub>2</sub>TPP into an acetone solution with 0.1 mol/L TEAP to obtain the 1: 1 complex. This complex is reduced with a peak potential at -0.28 V （vs. Ag/AgCl） in voltammetry, and it is found out that Eu<sup>3+</sup>-TPP is reduced to Eu<sup>2+</sup>-TPP. The height of the peak is directly propor-
