Diffusion-controlled size-selective chloride ion sensing in the presence of bromide ion using a thin, nanoporous, plasma-polymerized coating on an Ag/AgCl electrode

被引：2

作者：

Muguruma, Hitoshi

Sekikawa, Tomoya

Ueno, Shun-ichiro

Kubota, Nobuhiko

机构：

[1] Shibaura Inst Technol, Dept Elect Engn, Koto Ku, Tokyo 1358548, Japan

[2] Ishikawajima Harima Heavy Ind Co Ltd, Koto Ku, Tokyo 1358710, Japan

来源：

THIN SOLID FILMS | 2007年 / 515卷 / 17期

关键词：

chloride ion sensor; bromide ion; Ag/AgCl electrode; plasma polymerization;

D O I：

10.1016/j.tsf.2007.02.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have developed a diffusion-controlled size-selective method for sensing chloride ion in the presence of bromide ion, based on a thin, nanoporous, plasma-polymerized coating of hexamethyldisiloxane on an Ag/AgCl electrode. Sub-nanometer-sized pores responsible for a highly cross-linked polymer network in the plasma-polymerized coating allowed diffusion-controlled permeation of chloride ion while blocking the larger bromide ion. An electrode coating of thickness greater than 70 nm enabled chloride detection in the concentration range 1-10 MM in the presence of 0.63 mM bromide ion. Advantages of this approach are: (1) simple design compared with ionophore-based strategies and (2) compatibility with microfabrication and mass production processes. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：6978 / 6980

页数：3