New Chromogenic Azothiacrown Ethers-Synthesis and Properties

• Autorzy: Szczygelska-Tao J. , Biernat J. F.
• Języki publikacji: EN

Abstrakty

EN

New chromogenic azocrown ethers possessing sulfur atoms and two azo- groups in the macrocycle are described. The synthesized macrocycles have been applied as ion carriers in ion-selective membrane electrodes. Their selectivity and sensitivity were studied towards alkali and transition metal cations. Complexation of the compounds was studied by UV-Vis spectrophotometry in water-dioxane (1:1; v/v) solvent system. Stability constants of copper and silver complexes were determined. Contrary to oxygen analogues, the azothiacrowns do not form complexes with alkali or alkaline earth metal cations.

Słowa kluczowe

EN

azocrown ethers; proton-dissociable chromogenic reagents; membrane electrodes; copper complexes

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2002
• Tom: Vol. 76 / nr 7
• Strony: 931--936
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Szczygelska-Tao J.

• Department of Chemical Technology, Gdańsk University of Technology, 80-952 Gdańsk, Poland

autor

Biernat J. F.

• Department of Chemical Technology, Gdańsk University of Technology, 80-952 Gdańsk, Poland

Bibliografia

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