Optical recognition elements. Macrocyclic imidazole chromoionophores entrapped in silica xerogel

• Autorzy: Kledzik K. , Jamrógiewicz M. , Gwiazda M. , Wagner-Wysiecka E. , Jezierska J. , Biernat J. F. , Kłonkowski A. M.
• 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.

Słowa kluczowe

EN

azole azocrown ether; chromoionophore; fluoroionophore; silica xerogel matrix; optical recognition element

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2007
• Tom: Vol. 25, No. 4
• Strony: 1041--1051
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Kledzik K.

autor

Jamrógiewicz M.

autor

Gwiazda M.

autor

Wagner-Wysiecka E.

autor

Jezierska J.

autor

Biernat J. F.

autor

Kłonkowski A. M.

• Faculty of Chemistry, University of Gdańsk, Sobieskiego 18, 80-952 Gdańsk, Poland

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