摘要
利用循环伏安和现场紫外光谱电化学方法研究了标题配合物的电化学和光谱电化学性质。结果表明:在DMF介质的电位窗口内,卟啉环发生两步可逆的还原反应;与TPPGeF2相比,TPPGe(OH)2还原的半波电位较负,其紫外光谱吸收峰位置普遍红移;电极反应转移的电子数皆为1;对于TPPGeF2,两步还原的标准电极电位分别为-1.292V和-1.803V,对于TPPGe(OH)2。分别为-1.443V和-1.890V.
In this paper the electrochemical and spectroelectro-chemical properties of difluorogermanium porphyrin and dihydroxidegermanium porphyrin have been studied by the cyclic voltammetry and in situ UV-visible spectro-electrochemistry. The results have shown:in the potential window of DMF,the porphy rinring may be reduced in two steps that are reversible . The half-wave potentials for TPPGe(OH)2 are more negative than TPPGeF2,and there are a widespread red shift for the UV-Visible spectum. One electron is transferred in all electrode reactions.To TPPEGeF2,the standard,electrode potentials of first and second reduce react.To TPPGeF2,the standard electrode potentials of first and second reduce reaction are -1.292V and -1.803V,to TPPGe(OH)2,-1. 443V and -1.890V respectively
出处
《河南职业技术师范学院学报》
1994年第2期50-55,共6页
Journal of Henan Vocation-Technical Teachers College
关键词
电化学
光谱电化学
金属卟啉
锗
electrochemistry
spectroelectrochemistry
metalloporphyrin.