ИСТИНА

One of the most important research topics in chemistry and material sciences that covers various areas of human activity including health is the development of diagnostic systems. These systems should furnish efficient monitoring of various harmful ions and molecules in industrial processes, in clinical toxicology, environmental monitoring and household. Various types of optical sensors with high selectivity and sensitivity for the determination of mercury and copper cations in aqueous solutions are considered in this work. Sensors are produced from 1,8-bis(amino)anthraquinone-based ligands endowed with hydrophilic diethoxyphosphoryl groups and two alkyl chains [1-2]. The colorimetric sensors with absolute selectivity allow one to carry out both visual and spectrophotometric determination of mercury ions in water without sample preparation. Liquid and solid-state thin-film sensors, produced by Langmuir monolayers and Langmuir-Blodgett film techniques, are capable of selectively determining mercury cations in aqueous solutions up to 10-7 M. Highly sensitive SPR (surface plasmon resonance) sensors for the selective determination of Hg2+and Cu2+ ions in an aqueous medium to 10-11 M and 10-15 M, respectively, as well as polymer films and test strips for the rapid analysis of these cations are developed. These sensors possess the necessary sensitivity and selectivity for the direct determination of mercury and copper ions at levels, as required for industrial-process, waste-disposal, or environmental monitoring or even for household applications.