Investigation of transfer behavior of protonated pyridine at the   liquid/liquid interface using dual micropipettes

doi:10.1016/j.jelechem.2010.12.017

CORC > 北京大学 > 化学与分子工程学院

	Investigation of transfer behavior of protonated pyridine at the liquid/liquid interface using dual micropipettes
	Meng, Xin ; Liang, Zhongwei ; Li, Bo ; Xu, Xiaodong ; Li, Qing ; Zhao, Wenbo ; Xie, Shubao ; Shao, Yuanhua
刊名	journal of electroanalytical chemistry
	2011
关键词	Dual micropipette Generation/collection voltammetry Ionizable species transfer Water/1,2-dichloroethane interface ELECTROCHEMICAL MICROSCOPY SECM ION-TRANSFER-REACTIONS WATER/1,2-DICHLOROETHANE INTERFACE ORGANIC SOLUTIONS CHARGE-TRANSFER POTASSIUM-ION VOLTAMMETRY ITIES WATER DIBENZO-18-CROWN-6
DOI	10.1016/j.jelechem.2010.12.017
英文摘要	In this work, the ion transfer at the dual micro-liquid/liquid interfaces formed at the orifice of a dual micropipette is reported. The goal is to use one channel ("generator") to support a liquid/liquid interface where ions can be transferred from the inner phase (water) to the outer phase (1,2-dichloroethane, DCE), and another micropipette ("collector") in vicinity to collect the ions from the outer phase back into the inner phase. Generation/collection voltammetry has been employed and pyridine is chosen as a model compound to study the dependence of collection efficiency upon applied potentials and pH of generator and collector, respectively. The applied potential of the generator has been found no obvious influence on collection efficiency (eta). Collection efficiency decreases from maximum to zero as applied potential of collector increases, and the relationship between eta and applied potential and pH is discussed. We also demonstrate that the dependence of collection efficiency upon collector pH is rather complicated due to different mechanisms involved at below, near, or above pK(a) of pyridine. For ionizable species, the maximum collection efficiency (eta(max)) is not only dependent on the geometry of the pipette, but also pH of the system. (C) 2010 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000291768300020&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Analytical; Electrochemistry; SCI(E); EI; 3; ARTICLE; 1-2,SI; 125-129; 656
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151050]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Meng, Xin,Liang, Zhongwei,Li, Bo,et al. Investigation of transfer behavior of protonated pyridine at the liquid/liquid interface using dual micropipettes[J]. journal of electroanalytical chemistry,2011.
APA	Meng, Xin.,Liang, Zhongwei.,Li, Bo.,Xu, Xiaodong.,Li, Qing.,...&Shao, Yuanhua.(2011).Investigation of transfer behavior of protonated pyridine at the liquid/liquid interface using dual micropipettes.journal of electroanalytical chemistry.
MLA	Meng, Xin,et al."Investigation of transfer behavior of protonated pyridine at the liquid/liquid interface using dual micropipettes".journal of electroanalytical chemistry (2011).