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一、引言普鲁士蓝(PB)膜修饰电极因具有独特的电致变色及可逆的氧化还原行为,使其有望应用作三色显示的电色器件和应用于电催化和光谱电化学研究。1978年以来的二十年间已相继制备出一系列的普鲁士蓝膜和相关配合物(K_xM_yFe(CN)_6,其中 M=Fe、Cu、Ru、V、Pd、Co、Ni 等)修饰电极。这些物质虽属于同一类化合物,但其性质却随过渡金属离子的不同而异,并呈现不同的电变色行为。本文在对单一普鲁士蓝膜修饰电极的研究基础上,制备了稳定的普鲁士蓝和铁氰化铜复合膜修饰电极,并从原位光谱电化学测量的结果讨论了其电变色行为。
I. Introduction Prussian blue (PB) modified electrode has the unique electrochromic and reversible redox behavior, making it promising for electrochromic devices for three-color display and for electrocatalysis and spectroscopic electrochemical studies. A series of Prussian blue films and related complexes (K_xM_yFe (CN) _6, where M = Fe, Cu, Ru, V, Pd, Co, Ni etc.) have been prepared successively in the two decades since 1978. Although these substances belong to the same class of compounds, their properties vary with the transition metal ions and exhibit different electrochromic behavior. Based on the research of a single Prussian blue modified electrode, a stable Prussian blue and copper iron cyanide composite film modified electrode was prepared and its electrochromic behavior was discussed from the results of in-situ spectroelectrochemical measurements.