液界面上的电荷转移过程

微、纳米级液/液界面上的电荷转移过程

邵元华*，李箐，刘书娟，纪天容，赵文博，朱新宇，乔永辉

北京大学化学与分子工程学院分析化学研究所，北京100871

*联系人：yhshao@

电荷（电子与离子）在软界面上的转移反应在理解化学传感器机理、相转移催化、药物释放与模拟生物膜等方面发挥着重要作用[1]。

在该报告中，我们将介绍近期我们课题组在软界面电分析化学研究中的进展，主要包括电荷转移反应动力学、采用扫描离子电导显微镜（SICM）探讨液/液界面的结构、微、纳米管所产生的离子整流现象等[2-4]。

致谢：本文系国家自然基金（No. 20735001; 21075004）资助项目

参考文献

1 H. H. Girault, in Electroanalytical Chemistry, A. J. Bard and C. G. Zoski (Eds.), CRC Press,

Boca Raton, 2010, vol.23, p1.

2 R. Cui, Q. Li, D.F. Gross, X.Meng, B. Li, M. Marquez, R. Yang, J.L. Sessler, Y. Shao,

J.Am.Chem.Soc.,2008, 130, 14364-14365.

3 Q. Li, S. Xie, Z. Liang, X. Meng, S. Liu, H. H. Girault and Y. Shao, Angewdt. Chem. Int. Ed.,

2009, 48, 8010-8013.

4 S. Liu, Q. Li and Y. Shao, Chem. Soc. Rev., in press.

Charge transfer processes at micro- and nanoscopic liquid/liquid interfaces Yuanhua Shao, Qing Li, Shujuan Liu, Tianrong Ji, Wenbo Zhao, Xinyu Zhu, Yonghui Qiao, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking

University, Beijing 100871, China.

Charge (electron and ion) transfer reactions at a soft interface are fundamental significant in the understanding of the mechanism of chemical sensors, phase transfer catalysis, drug delivery and mimicking biological membranes.1

In this presentation, we will discuss some recent progress on investigations of charge transfer processes at the soft interfaces in our laboratory. It focuses mainly on the transfer kinetics, the structure of liquid/liquid interface by scanning ion conductance microscopy (SICM) and rectification. Very fast ion transfer rate constants can be obtained based on nanopipet voltammetry.2-4