A sodium ion sensor based on a covalently-linked aminorhodamine B-calix[4]arene chromoionophore

被引：21

作者：

Benco, JS

Nienaber, HA

McGimpsey, WG ^{[1
]}

机构：

[1] Worcester Polytech Inst, Dept Chem & Biochem, Worcester, MA 01609 USA

[2] Bayer Business Grp Diagnost, Medfield, MA USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2002年 / 85卷 / 1-2期

关键词：

aminorhodamine B; calix[4]arene; optode; photo-induced electron transfer;

D O I：

10.1016/S0925-4005(02)00063-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A fluorescent sodium optode based on a chromoionophore consisting of aminorhodamine B covalently-linked through an amide bond to a calix[4]arene has been developed. The optode, fashioned by incorporation of the chromoionophore into a single component polymer matrix, operates, on the basis of on/off switching of aminorhodamine B fluorescence emission as a result of photo-induced intramolecular electron transfer, the efficiency of which is mediated by the complexation of sodium ions. The fluorescence intensity increased linearly with increasing sodium ion concentration in the range 0.01-2.0 M, exhibiting a three-fold enhancement over this range. The optode provides selectivity for sodium ions compared to potassium ions that is sufficient for clinical determinations of sodium ion concentration. (C) 2002 Published by Elsevier Science B.V.

引用

页码：126 / 130

页数：5

共 12 条

[1] SYNTHESIS, X-RAY CRYSTAL-STRUCTURES, AND CATION-BINDING PROPERTIES OF ALKYL CALIXARYL ESTERS AND KETONES, A NEW FAMILY OF MACROCYCLIC MOLECULAR RECEPTORS [J].