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电化学  2010 

四-(三氟乙烷氧基)酞菁锌在非水与水溶剂中的电化学性能

, PP. 460-464

Keywords: 四-(三氟乙烷氧基)酞菁锌,电化学,循环伏安法,光敏剂

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Abstract:

分别测定四-(三氟乙烷氧基)酞菁锌(ZnPcF)于非水溶剂N,N-二甲基甲酰胺(DMF)、二甲基亚砜(DMSO)及磷酸盐缓冲溶液(PBS)中玻碳(GC,抛光)电极的循环伏安行为.结果表明,ZnPcF在DMF及DMSO溶剂均呈现4对电流峰,半波电位分别为0.558、-0.761、-1.034和-1.417V,显示该物存在4个准可逆酞菁配体的单电子转移过程.而在PBS溶液中,ZnPcF乳化液仅呈现两个电流峰,半波电位为-0.885和-1.104V,为不可逆反应特征,与酞菁锌(ZnPc未取代)相比,由于其周边取代基—三氟乙烷氧基的吸电子作用,导致氧化还原电位正移.

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