Development of High-Performance Ion Sensors Based on the Functions of Crown Ethers and Synthetic Bilayer Membranes

DOI Web Site Web Site 19 References

Bibliographic Information

Other Title
  • クラウンエーテルおよび合成二分子膜の機能を基盤とした高性能イオン電極の開発
  • クラウンエーテル オヨビ ゴウセイ 2ブンシ マク ノ キノウ オ キバン ト シタ コウセイノウ イオン デンキョク ノ カイハツ

Search this article

Abstract

High-Performance Na+, K+ and Cl- ion selective electrodes (ISEs) are reported. These are based on a new concept, which is an ion recognition site formed by molecular interaction. In the case of Na and K ISEs, crown ether compounds connecting with planar substituents were used as the ionophores. The selectivities depend on the structure of substituents. It is found that the intermolecular interaction of the planar substituent plays an important role on the improvement of selectivity. The selectivities of interactive mono (crown ether) are equal to that of bis (crown ether). It means that ion recognition site like a bis (crown ether) is formed by the interaction of mono (crown ehter)s. In the case of Cl ISE, immobi lized synthetic bilayer membrane with quaternary ammonium salts was used as the ion sensitive mem brane. In the immobilized synthetic bilayer membrane, ordered molecular aggregates is formed. It is f ound that the molecular orientation improved the Cl selectivity. The insufficient selectivity over lipophilic anions can be controlled by addition of aliphatic alcohol. These resulting ISEs exhibit high speed response and long life time, and they are applicable to clinical use which demands both accurate measurement and high speed processing.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1999 (10), 629-636, 1999-10-10

    The Chemical Society of Japan

References(19)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top