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Information × Registration Number 0218U003433, 0117U006349 , R & D reports Title Green synthesis and biosecurity estimates of quantum dots of silver (I) sulfide nanoparticles . popup.stage_title Head Emez A., Ivanov, Registration Date 13-02-2018 Organization Department for special training National academy of science of Ukraine at Kiev University popup.description2 The research work is devoted to the development of reproducible methods of biological synthesis of silver sulfide (I) semiconductor nanoparticles using the mycelium of basidial fungus Pleurotus ostreatus. As a result, the luminescent Ag2S quantum dots were synthesized. It was found that absorption maxima corresponded to the wavelengths at 315 nm and 470 nm for produced semiconductor nanoparticles. Absorption spectra are typical for Ag2S.quantum dots. In addition, morphological analysis of synthesized quantum dots was carried out using high-resolution transmission electron microscopy. The results of electron microscopy confirm the presence of semiconductor nanoparticles of silver sulfide in tested samples, they have a homogeneous, spherical morphology, do not have any surface defects and have a diameter in the range of 20 - 25 nm. Notable antibacterial activity is observed for the synthesized by biological method Ag2S nanoparticles. A special feature of Ag2S quantum dots at a concentration of 3 mg/mL is an influence on mitosis. Some mitotic disorders have been identified at the meta- and aphase stage, that generally indicates the antimitotic effects of silver sulfide nanoparticles. It has also been established that the Ag2S quantum dots obtained from biological synthesis do not exhibit pronounced cytotoxic effects on human B- and T-lymphocytes. Product Description popup.authors Ємець А.І. Борова М.М. Горюнова І.І. Демидов С.В. Коваленко П.А. Козерецька І.А. Негєля А.О. Пірко Н.М. Пірко Я.В. Плоховська С.Г. Постовойтова А.С. Проценко О.В. Шелест Д.В. Ясінський Я.С. popup.nrat_date 2020-04-02 Close