UREA SENSITIVE FIELD-EFFECT TRANSISTORS BASED ON DITHIO GROUP-CONTAINING LANGMUIR-BLODGETT MEMBRANES

被引：10

作者：

LEE, S ^{[1
]}

ANZAI, J ^{[1
]}

OSA, T ^{[1
]}

机构：

[1] TOHOKU UNIV, INST PHARMACEUT, SENDAI, MIYAGI 980, JAPAN

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1991年 / 64卷 / 06期

关键词：

D O I：

10.1246/bcsj.64.2019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

2-(Octadecyldithio)pyridine (1) and 5-(octadecyldithio)-2-nitrobenzoic acid (2) were synthesized in order to prepare Langmuir-Blodgett (LB) membranes which possess reactive dithio groups on the surface for further modification with enzymes. The monolayer membrane, composed of 1 or 2, was deposited successfully on an ion-sensitive field effect transistor, and the membrane surface was modified with urease covalently by a thiol-disulfide exchange reaction. The LB membrane-based sensor 2 showed a better potentiometric response to urea than that of the membrane-based sensor 1. The results are discussed on the basis of the reactivity of the dithio groups to urease at the membrane surface.

引用

页码：2019 / 2021

页数：3

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