Neutral-Carrier-Type Potassium Ion-Selective Electrodes Based on Polymer-supported Liquid-Crystal Membranes for Practical Use

• OOSAKI Syusuke

  Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University

• KAWAI Yoshikazu

  Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University

• YAJIMA Setsuko

  Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University

• KIMURA Keiichi

  Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University

Abstract

Polymer-supported liquid-crystal membranes have been designed for neutral-carrier-type potassium ion-selective electrodes, aiming for practical applications of high-performance liquid-crystalline membrane ion sensors. Two types of polymer-supported liquid-crystal membranes were tested for their usefulness; one is microporous poly(tetra fluoroethylene) (PTFE) membranes impregnated by thermotropic liquid-crystalline compounds, and another is poly(methyl methacrylate) (PMMA) membrane dispersing the same liquid-crystalline compounds. Both of the polymersupported liquid-crystal membranes containing a liquid-crystalline benzo-15-crown-5 neutral carrier as well as a lipophilic anion excluder work well as ion-sensing membranes for potassium ion-selective electrodes, the ion selectivities of which can be switched by the measurement temperatures. Specifically, PTFE-impregnated liquid-crystal membranes are better than the PMMA-dispersed ones in the sensitivity and selectivity of the resulting ion electrodes. A potassium ion assay in blood sera has proved that neutral-carrier-type ion-selective electrodes based on the polymer-supported liquid-crystal membranes are reliable for practical uses.

Journal

• Analytical Sciences

  Analytical Sciences 20 (8), 1165-1169, 2004

  The Japan Society for Analytical Chemistry

Keywords

• Analytical Chemistry

Details

• CRID: 1390282679233843200
• NII Article ID: 10013450848
• NII Book ID: AA10500785
• DOI: 10.2116/analsci.20.1165
• COI: 1:CAS:528:DC%2BD2cXmvFOhsr4%3D
• ISSN: 13482246
• ISSN: 09106340
• NDL BIB ID: 7037846
• PubMed: 15352505
• Web Site: http://id.ndl.go.jp/bib/7037846
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7037846
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.20.1165.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.20.1165/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/20/8/20_8_1165/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed