H2PO4- selective CHEMFETs with uranyl salophene receptors

被引：35

作者：

Antonisse, MMG ^{[1
]}

Snellink-Ruel, BHM ^{[1
]}

Engbersen, JFJ ^{[1
]}

Reinhoudt, DN ^{[1
]}

机构：

[1] Univ Twente, MESA Res Inst, Dept Supramol Chem & Technol, NL-7500 AE Enschede, Netherlands

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1998年 / 47卷 / 1-3期

关键词：

anion selectivity; CHEMFET; phosphate; uranyl salophene;

D O I：

10.1016/S0925-4005(98)00002-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Chemically modified field effect transistors (CHEMFETs) with ion-selective membranes which incorporate lipophilic uranyl salophene derivatives exhibit H2PO4- selectivities strongly deviating from the Hofmeister series. Selectivity is obtained over much more lipophilic anions such as NO3- (logK(H2PO4,NO3)(Pot) = - 1.3) and Cl- (logK(H2PO4,Cl)(Pot) = - 1.8). Modification of the uranyl salophene derivatives with additional hydrogen bond accepting methoxy substituents results in lowered detection limits and an improved selectivity over Cl-, Br-, SO42- and OH-. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：9 / 12

页数：4

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