Neutral carrier-type ion sensors based on sol-gel-derived membranes incorporating a bis(crown ether) derivative by covalent bonding

被引：58

作者：

Kimura, K ^{[1
]}

Sunagawa, T

Yajima, S

Miyake, S

Yokoyama, M

机构：

[1] Wakayama Univ, Fac Syst Engn, Dept Appl Chem, Wakayama 6408510, Japan

[2] Osaka Univ, Fac Engn, Suita, Osaka 5650871, Japan

来源：

ANALYTICAL CHEMISTRY | 1998年 / 70卷 / 20期

关键词：

D O I：

10.1021/ac9805706

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Sol-gel-derived membranes incorporating crown ether neutral carriers by covalent bonding have been designed for durable, nontoxic neutral carrier-type ion sensors by sol-gel processing using tetraethoxysilane, diethoxydimethylsilane, and their corresponding alkoxysilylated neutral carriers. A tetraphenylborate anion was also bound chemically to the neutral carrier-type sol-gel-derived membranes for suppressing anion interference and membrane impedance. Ion-sensitive field effect transistors (ISFETs) based on the sol-gel-derived membranes modified chemically by crown ether derivatives, such as 16-crown-5 and bis(12-crown-4) derivatives, showed high performance, high sensitivity in wide cation activity ranges, short response time, and high electrode durability. Specifically, high ion selectivities of practical use in biological systems were attained in the sodium ISFETs based on the chemically modified bis(12-crown-4), which has been successfully applied to sodium assay in blood sera.

引用

页码：4309 / 4313

页数：5

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