Electrochemistry of a urea-functionalized calix[4]diquinone sulfate-anion selective receptor

被引：32

作者：

Jeong, H

Choi, EM

Kang, SO

Nam, KC

Jeon, S ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Chem, Kwangju 500757, South Korea

[2] Chonnam Natl Univ, Inst Basic Sci, Kwangju 500757, South Korea

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2000年 / 485卷 / 02期

关键词：

electrochemistry; calix[4]diquinones; sulfate-anion; selective receptor; hydrogen bonding;

D O I：

10.1016/S0022-0728(00)00108-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new class of neutral ligands is synthesized and studied for the binding properties with anions by electrochemical methods. The binding of calix[4]diquinone 1 with HSO4 causes a large negative shift of the electrode potentials of the calix[4]diquinone. This novel neutral anion receptor 1 binds anions through hydrogen-bonding and shows high selectivity for HSO4 over H2PO4, Cl and CH3CO2. The selectivity of HSO4, over H2PO4, Cl, and CH3CO2 may be attributed to the stronger hydrogen-bonding with the urea moiety, and also with the quinone moiety of 1 receptor, and also the greater compatibility of the cavity of 1 with tetrahedral HSO4. (C) 2000 Elsevier Science S.A. All rights reserved.

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页码：154 / 160

页数：7

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