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Optical recognition elements. Macrocyclic imidazole chromoionophores entrapped in silica xerogel

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Materials containing new chromoionophores consisting of crown residue and azole moiety as parts of macrocycles were encapsulated by the sol-gel procedure in silica xerogel matrices and proposed as chemical recognition elements especially for such metal ions as Li+, Cs+ and Cu2+. Action of these recognition elements is in principle based on changes of reflectance. The recognition elements containing 21- membered chromogenic derivatives of unsubstituted imidazole and 4-methylimidazole are able to distinguish in aqueous solution whether the Li+ concentration ratio is lower or higher than 1. In the case of Cu2+ complexes with 18-membered macrocyclic chromoionophore in which phenol residue was replaced by imidazole and 21-membered chromogenic derivative of 4-methylimidazole, values of the EPR parameters g and A suggest participation of two oxygen and two nitrogen atoms of the ligand in the equatorial plane of the tetragonally distorted octahedral environment of the central ion.
Wydawca
Rocznik
Strony
1041--1051
Opis fizyczny
Bibliogr. 23 poz.
Twórcy
autor
autor
autor
  • Faculty of Chemistry, University of Gdańsk, Sobieskiego 18, 80-952 Gdańsk, Poland
Bibliografia
  • [1] LUBOCH E., BILEWICZ R., KOWALCZYK M., WAGNER-WYSIECKA E., BIERNAT J.F., Azo Macrocyclic Compounds, Chapt. 3, [in:] G.W. Gokel (Ed.), Advances in Supramolecular Chemistry, Vol. 9, Cerberus Press, 2003, p. 71. Optical recognition elements 1051
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW7-0007-0133
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