二茂铁衍生物L─B膜修饰铂电极的电化学性能

Electrochemical Behaviours of Ferrocene Derivatives L-B Film Modified Pt Electrode

本文研究了单取代硬脂酸二茂铁酯、双取代亚麻酸二茂铁酯、单二茂铁酸十八酯和双二茂铁酸十八酯四种二茂铁衍生物Ｌ—Ｂ膜修饰铂电极的循环伏安行为．用理论模型模拟了归一化峰面积、峰电位差随扫描速度变化的规律，以及分子相互作用能与半高宽的关系．将实验结果与理论模型的模拟结果进行比较，求得了Ｌ—Ｂ膜的层间电荷转移速度常数，Ｌ—Ｂ膜与电极之间的电荷转移速度常数，分子作用能及半峰电位等参数，并比较了四种二茂铁衍生物Ｌ—Ｂ膜修饰铂电极的电化学性能．

Abstract The cyclic voltammetic behaviours of starate ferrocenyl, 1,1'-dilinolene ferrocenyl, carboxyferrocene octedecanoyl ester, 1,1'-dicarboxy ferrocene diocetedecanoyl ester L-B films modified Pt electrode were studied. The dependence of normolized peak area and peak potential difference on scan rate the relationship between molecular interacton energy and full width at half maximum (FWHM) were analysed by digital simulation. By fitting the experimental data with the aimulation curves, the electrochemical parameters, such as interlayer electron transfer rate constant, electron transfer rate constant between electrode and L-B film, molecular intrractionenergy and half peak potential were estimated. The electrochemical behaviours of ferrocene derivatives modified Pt electrode were compared and discussed.