Вид документа : Статья из журнала Шифр издания : Автор(ы) : Evseev M. E., Kholmogorova A. S., Neudachina L. K., Pestov A. V., Puzyrev I. S., Osipova V. A., Adamova L. V. Заглавие : N-Substituted-3-aminopropylsilsesquioxanes: synthesis, physicochemical properties, and application Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1154-1160 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): silsesquioxanes--sol-gel--carbon paste electrodes--rubeanic acid--determination of silver(i) Аннотация: Synthesis and study of the physicochemical properties of silsesquioxanes modified with 3-aminopropyl, 2-aminoethyl-3-aminopropyl, and dithiooxamide groups was carried out. The obtained sorbents were characterized by thermal stability, porosity, and a high degree of functionalization; the concentration of groups grafted to the particle surface reached 2.80 mmol g−1. Modified silsesquioxanes were used as an electroactive substance for the development of indicator carbon paste electrodes (CPEs). When using a CPE with a 5% dithiooxamidated silsesquioxane content, the conditions selected for potentiometric titration of aqueous solutions containing silverI were pH 3–4, the titrant was potassium iodide. The designed sensor was successfully tested by analyzing a standard sample and a drug for silver ion content. Доп.точки доступа: Evseev, M. E.; Kholmogorova, A. S.; Neudachina, L. K.; Pestov, A. V.; Puzyrev, I. S.; Osipova, V. A.; Adamova, L. V.