A highly selective fluoroionophore for the detection of lithium ions

被引：17

作者：

Benco, JS ^{[1
]}

Nienaber, HA ^{[1
]}

McGimpsey, WG ^{[1
]}

机构：

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

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2004年 / 162卷 / 2-3期

关键词：

fluoroionophore; selectivity; lithium ions;

D O I：

10.1016/s1010-6030(03)00375-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

N-(9-methylanthracene)-25,27-bis(1-propyloxy)-4-tert-butylcalix[4]arene-azacrown-3 (I) was synthesized and tested as a fluoroionophore for the selective detection of lithium cations. The efficiency of photoinduced electron transfer in this fluoroionophore is sensitive to the presence of lithium ions. When exposed to lithium ions in a 75:25 (v/v) dichloromethane/THF solvent mixture, the molecule acted as an "off-on" fluorescence switch exhibiting a >106-fold enhancement in fluorescence emission intensity. Selectivity studies demonstrated that I effectively discriminates against sodium and potassium: log K-Li,K-Na = -3.8 and log K-Li,K-K = -2.3. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：289 / 296

页数：8

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