金属酞菁催化多巴胺的初步研究

UV-Vis Studies of Dopamine Oxidized with Metallophthalocyanines as Catalysts

采用紫外-可见吸收光谱法研究了5种金属酞菁MPc(MnII,FeII,CoII,CuII,NiII)对多巴胺氧化的催化作用及催化的最佳条件。5种MPc的催化活性因中心离子的不同而不同,其中MnPc的催化作用最为显著。5种MPc催化多巴胺氧化的最佳pH值均为8.0。但是不同MPc的最适宜催化温度不同,MnPc是50℃,FePc和CoPc是55℃,CuPc是60℃,而NiPc在50℃以上才有催化活性,并随着温度的升高催化活性显著增大。

A The oxidation of dopamine by dioxygen using metallophthalocyanines （MPc, M = Mn（II）, Fe（II）, Co（II）, Cu （II）, Ni（II）） as the catalysts was researched through electronic absorption spectra. The catalytic activities vary depending on different metal ions, and MnPc shows the best catalytic ability compared with the others. The optimal pH value is 8.0 for all MPc, and the optimal catalytic temperatures range from 50 ℃ to 60 ℃ based on the types of different MPc.