用超微电极研究二茂铁等物质在聚电解质聚乙二醇·高氯酸锂中的伏安行为  

Voltammetric Behavior of Electroactive Solutes in Polyelectrolyte Polyethyleneglycol. Lithium Percholrate by Using Ultramicroelectrode

作　　者：周华方[1] 董绍俊[1] 

机构地区：[1]中国科学院长春应用化学研究所电分析化学开放研究实验室,长春130022

出　　处：《分析化学》1997年第4期382-386,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金

摘　　要：用超微电极研究了聚电解质聚乙二醇·高氯酸锂（ＰＥＧ·ＬｉＣｌＯ４）的电化学性能。用伏安法研究了气体、有机小分子、温度、支持电解质、聚合链长的影响。结果表明，有机小分子有增塑效应；物质的扩散速率随温度的上升而增加，随支持电解质中阳离子半径增大而增加，随聚合物链长增加而减小。用粘度和自由体积理论解释了此现象。定性地描述了电子自交换对扩散的贡献。This paper describes the properties of PEG polymer electrolyte as solvent medium for so1id-state voltammetry and results for the dependency of diffusive transport of electroac- tive solutes on organic small molecule, temperature, electrolyte and polymer chain length. The diffusion rate or the current response increases with increasing temperature and decreas- ing polymer chain length. This phenomenon is explained by free volume and viscosity theo- ry. The organic molecule exerts a greater“plasticizing” effect for polyelectroyte. The contri- bution of self electronic exchange is discussed qualitatively.

关 键 词：超微电极 聚电解质 PEG 二茂铁 高氯酸锂 

分 类 号：O646[理学—物理化学] O627.81[理学—化学]