Luminescence determination of sodium and potassium using molecular sensors on the basis of terbium(III) complexes of 4-carboxybenzocrown ethers
Authors:
- 20 February 2011
- journal article
- Published by Pleiades Publishing Ltd in Journal of Analytical Chemistry
- Vol. 66 (2) , 158-165
Abstract
The spectral luminescent properties of terbium(III) complexes of 4-carboxybenzo-15-crown-5 (L1) and 4-carboxybenzo-18-crown-6 (L2) are studied. The quenching of the luminescence of lanthanide by alkali metal ions is discovered, which is referred to as the formation of mixed Tb(III)-L1-Na+ and Tb(III)-L2-K+ complexes. The complexes are useful as molecular sensors for the luminescence determination of Na+ and K+ with the detection limits 1.5 and 25.0 μg/mL. Using the Tb(III)-L1 complex, sodium can be determined in the presence of a 1000-fold excess of potassium. The developed procedures are utilized for the determination of KCl in the Kalipoz medication in tablet form and the total sodium salts (NaCl, NaHCO3) in the Trisol solution for infusions.Keywords
This publication has 16 references indexed in Scilit:
- Design principles for optical molecular sensors and photocontrolled receptors based on crown ethersRussian Chemical Reviews, 2008
- Sensing and fluorescence behaviors of complex formation between new lariat crown ethers bearing fluorescence sidearm and metal ions in methanol solutionJournal of Luminescence, 2006
- Selective recognition of sodium cyanide and potassium cyanide by diaza-crown ether-capped Zn-porphyrin receptors in polar solventsTetrahedron, 2005
- Synthesis of some 3-phenyl chromenone-crown ethers and equilibrium studies on complexation with ion-pair extraction of sodium and potassium dyesDyes and Pigments, 2004
- H+, Na+ and K+ modulated lanthanide luminescent switching of Tb(iii) based cyclen aromatic diaza-crown ether conjugates in waterChemical Communications, 2003
- Conformational analysis of 12-crown-3 and sodium ion selectivity of electrodes based on bis(12-crown-3) derivatives with malonate spacersAnalytica Chimica Acta, 2003
- A fluoroionophore for detection of potassium ions: 9-anthryl-substituted azacrown ether covalently linked to a 1,3-alternate calix[4]areneJournal of Photochemistry and Photobiology A: Chemistry, 2002
- Luminescent terbium( iii ) complexes with pendant crown ethers responding to alkali metal ions and aromatic antennae in aqueous solutionChemical Communications, 2002
- Thermodynamic study of complex formation between 18-crown-6 and potassium ion in some binary non-aqueous solvents using a conductometric methodTalanta, 1997
- Molecular Design of Chromogenic Calix[4]crowns Which Show Very High Na+ SelectivityChemistry Letters, 1995