Dipodal Tetraamide Derivatives of 1,10-Diaza-18-Crown-6 and Alkylmalonic Acids—Synthesis and Use as Ionophores in Ion Selective Membrane Electrodes

Autor:	Radosław Pomećko, Elżbieta Luboch, Maciej Jeszke
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	ion-selective electrode magnesium ion double-armed diazacrown ether Chemical technology TP1-1185
Zdroj:	Sensors, Vol 21, Iss 15, p 4984 (2021)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s21154984
Popis:	Novel dipodal derivatives of an 18-membered diaza-crown ether with two diamide chains featuring methylmalonic or butylmalonic acid residues were obtained and tested as ionophores in ion-selective plasticized membrane electrodes. The objective of the study was to identify measurement conditions which ensure the most favorable performance for magnesium ion-selective electrodes. The relationship between the molar lipophilic anion salt-to-ionophore ratio and selectivity of electrodes was examined. The best result was obtained for the conventional electrode containing Mg2 ionophore. Calculated selectivity coefficients were as follows: logKMg/Ca = −2.77, logKMg/Na = −3.46 and logKMg.K = −2.24 (SSM, 1M).
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/bc9d6bed0a054e149514ce3fa588fd23 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.