Studies of Ionic Current Rectification Using Polyethyleneimines Coated   Glass Nanopipettes

doi:10.1021/ac3004852

CORC > 北京大学 > 化学与分子工程学院

	Studies of Ionic Current Rectification Using Polyethyleneimines Coated Glass Nanopipettes
	Liu, Shujuan ; Dong, Yitong ; Zhao, Wenbo ; Xie, Xiang ; Ji, Tianrong ; Yin, Xiaohong ; Liu, Yun ; Liang, Zhongwei ; Momotenko, Dmitry ; Liang, Dehai ; Girault, Hubert H. ; Shao, Yuanhua
刊名	analytical chemistry
	2012
关键词	QUARTZ NANOPIPETTES CONICAL NANOPORES POTASSIUM-ION DIBENZO-18-CROWN-6 INTERFACE TRANSPORT MEMBRANES CHANNELS BINDING SILICA
DOI	10.1021/ac3004852
英文摘要	The modification of glass nanopipettes with polyethyleneimines (PEIs) has been successfully achieved by a relatively simple method, and the smallest tip opening is around 3 nm. Thus, in a much wider range of glass pipettes with radii from several nanometers to a few micrometers, the ion current rectification (ICR) phenomenon has been observed. The influences of different KCl concentrations, pH values, and tip radii on the ICR are investigated in detail. The sizes of PEIs have been determined by dynamic light scattering, and the effect of the sizes of PEIs for the modification, especially for a few nanometer-pipettes in radii, is also discussed. These findings systemically confirm and complement the theoretical model(7,18) and provide a platform for possible selectively molecular detection and mimic biological ion channels.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000305871300018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Analytical; SCI(E); EI; PubMed; 29; ARTICLE; 13; 5565-5573; 84
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/312570]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Liu, Shujuan,Dong, Yitong,Zhao, Wenbo,et al. Studies of Ionic Current Rectification Using Polyethyleneimines Coated Glass Nanopipettes[J]. analytical chemistry,2012.
APA	Liu, Shujuan.,Dong, Yitong.,Zhao, Wenbo.,Xie, Xiang.,Ji, Tianrong.,...&Shao, Yuanhua.(2012).Studies of Ionic Current Rectification Using Polyethyleneimines Coated Glass Nanopipettes.analytical chemistry.
MLA	Liu, Shujuan,et al."Studies of Ionic Current Rectification Using Polyethyleneimines Coated Glass Nanopipettes".analytical chemistry (2012).