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Information × Registration Number 0215U004351, 0109U008221 , R & D reports Title Nano-sized supernucleophilic and oxidative-nucleophilic system for decomposition of ecotoxicants. popup.stage_title Head Anatolii F. Popov, Доктор хімічних наук Registration Date 05-03-2015 Organization The L.M.Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry popup.description2 Subjects of investigation: organized nano-sized systems (ONS) on the basis of dimeric surfactants with reactive counterion and dimeric cationic and functional detergents for decomposition of model substrates served as analogues of ecotoxicants. The goal of the work: design of supernucleophilic (or oxidative-nucleophilic) ONS capable of governing reaction rates and routes. Investigation techniques: UV spectrophotometry, conductometry, tensometry; IR, NMR1H and NMR13C methods; general procedures of chemical synthesis. Scientific importance: Methods of synthesis of three classes of the detergents were developed. Starting from the "structure of detergent/substrate - micellar effects" relationship, the main factors responsible for the efficiency of micellar catalysis by ONS on the basis of the new detergents were established. The scope of micellar effects in all types of the detergents depends on the character of the microenvironment, the "shift" of acid ionization constant, and effects of reagent concentrating in the micelles of the detergents. In this case the effects of concentrating are of prime importance in accelerating the decomposition of acyl substrates and, hence, is governed both by hydrophobic properties of the substrate and detergents. Such supernuclephilic ONS, first of all, on the basis of functionalized detergents are the most efficient on record and accelerate the observed reaction rate by a factor of 1000 - 100000. Novelty: abnormally low critical concentration of micelle formation of dimeric detergents is the undoubted advantage. This provides the same observed reaction rates at the concentrations of detergents by an order of magnitude less than those of monomeric analogues. The "structure of detergent/substrate - micellar effects" relationships established make it possible to achieve purposeful design of ONS with the specified level of their activity. Practical implications: The ONS can be proposed as a basis for formulations used in utilization/detoxication of ecotoxicants. Application fields: environmental protection. Product Description popup.authors Бєлоусова І.О. Бобошко Л.Г. Бураков М.І. Гайдаш Т.С. Зубарева Т.М. Капітанов І.В. Карпічев Є.А. Кострикін М.Л. Мітченко О.С. Михайлов В.О. Панченко Б.В. Прокоп'єва Т.М. Разумова Н.Г, Садовський Ю.С. Соломойченко Т.М. Тицький Г.Д. Туровська М.К. Шумейко О.Є. popup.nrat_date 2020-04-02 Close