H2PO4- SELECTIVE CHEMFETS WITH URANYL SALOPHENE RECEPTORS

Citation
Mmg. Antonisse et al., H2PO4- SELECTIVE CHEMFETS WITH URANYL SALOPHENE RECEPTORS, Sensors and actuators. B, Chemical, 47(1-3), 1998, pp. 9-12
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Electrochemistry,"Chemistry Analytical","Instument & Instrumentation
ISSN journal
0925-4005
Volume
47
Issue
1-3
Year of publication
1998
Pages
9 - 12
Database
ISI
SICI code
0925-4005(1998)47:1-3<9:HSCWUS>2.0.ZU;2-Z
Abstract
Chemically modified field effect transistors (CHEMFETs) with ion-selec tive membranes which incorporate lipophilic uranyl salophene derivativ es 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 additio nal hydrogen bond accepting methoxy substituents results in lowered de tection limits and an improved selectivity over Cl-, Br-, SO42- and OH -. (C) 1998 Elsevier Science S.A. All rights reserved.