Alkyl Sulfate Compounds with Cationic Metal Complexes and Some Organic Reagents as Active Membrane Components of Potentiometric Sensors

Abstract

A review of publications for the last 20 years devoted to the purposeful search for new ionophores ensuring the reliable, reproducible, and selective determination of analytes. The synthesis of new ionophores and optimization of sensor designs in combination with their simplicity, availability, and low cost allow the modernization of present-day sensor technologies. The constantly growing interest in metal complexes with various organic reagents favors the expansion of the areas of their use, in particular, for the development of potentiometric sensors. Potentiometric sensors are a promising tool of the quality control of surfactants (SAS) and their presence in various samples. It was shown that the introduction of alkyl sulfate compounds with cationic copper(II) complexes of some organic reagents (pyridine, 1,10-phenanthroline, 2,2'-dipyridyl) into the composition of membranes ensures the creation of sensors selective to ionic surfactants with improved electroanalytical characteristics.