论文部分内容阅读
目的 分离一磺酸基酞菁锌 (Zn Pc S)和四磺酸基酞菁锌 (Zn Pc S4) ,并研究这两种配合物在水溶液中伏安行为。 方法 采用高效液相色谱分离纯化 Zn Pc S和 Zn Pc S4,应用三电极系统测定其在水溶液中伏安曲线 ,测定 Zn Pc S和 Zn Pc S4在不同 p H值下和红光照射下的循环伏安曲线。 结果 在水溶液中 (p H 7.0 ) ,这两种配合物均呈现二个不可逆的单电子还原电流峰 ,峰 的峰电位 (Ep)是 + 0 .18V,峰 的峰位置 (Ep) - 0 .38V。 Zn Pc S的两个峰电流值大小与溶液 p H值有关 ,且红光 (6 0 0～ 70 0 nm )照射 ,其还原峰的数目和峰位置基本不变 ,但峰电流增大。 结论 Zn Pc S和 Zn Pc S4电还原过程发生在酞菁环上 ,Zn Pc S水溶液中存在单体和二聚体平衡。
OBJECTIVE To separate and purify Zn Pc S and Zn Pc S4, and to study the voltammetric behavior of the two complexes in aqueous solution. Methods The Zn Pc S and Zn Pc S4 were isolated and purified by high performance liquid chromatography. The voltammetric curves were measured in aqueous solution by a three-electrode system. The cycling of Zn Pc S and Zn Pc S4 under different p H values and red light irradiation Voltammetry curve. Results In aqueous solution (p H 7.0), the two complexes showed two irreversible single electron reduction current peaks. The peak potential (Ep) was +0.18 V and the peak position (Ep) -0. 38V. The peak current values of Zn Pc S are related to the p H value of the solution, and the number of redox peaks and the peak positions of the Zn Pc S are almost unchanged, but the peak currents increase due to the red light (600 ~ 70 0 nm) irradiation. Conclusions The electronic reduction of Zn Pc S and Zn Pc S4 occurs on the phthalocyanine ring, and the balance of monomer and dimer exists in Zn Pc S solution.