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

Citation
H. Jeong et al., Electrochemistry of a urea-functionalized calix[4]diquinone sulfate-anion selective receptor, J ELEC CHEM, 485(2), 2000, pp. 154-160
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
ISSN journal
1572-6657 → ACNP
Volume
485
Issue
2
Year of publication
2000
Pages
154 - 160
Database
ISI
SICI code
Abstract
A new class of neutral ligands is synthesized and studied for the binding p roperties with anions by electrochemical methods. The binding of calix[4]di quinone 1 with HSO4 causes a large negative shift of the electrode potentia ls of the calix[4]diquinone. This novel neutral anion receptor 1 binds anio ns 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 o f the cavity of 1 with tetrahedral HSO4. (C) 2000 Elsevier Science S.A. All rights reserved.