Search academic texts

Information × Registration Number 0226U003621, (0124U003998) , R & D reports Title Application of long-lived organic emitters capable of solid-state luminescence enhancement for the detection of nitroaromatic explosives popup.stage_title Розробка систем виявлення вибухових речовин: система детекції на основі суміші розчинників TNF/вода. Будуть розроблені системи виявлення на основі гасіння TADF/RTP сполук, що демонструютьSSLE, нанесені на папір. Буде оцінена вибірковість і стабільність датчиків. Head Navozenko Oleksandr M., Кандидат фізико-математичних наук Registration Date 23-04-2026 Organization Taras Shevchenko National University of Kyiv popup.description1 Development of a new generation of organic emitters exhibiting a combination of solid state luminescence enhancement (SSLE), thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) phenomena for the optical detection of nitroaromatic explosives. popup.description2 Environmental pollution has become one of the main environmental problems after February 24, 2022. Among explosives, nitroaromatic compounds are among the most common. Currently, there is an urgent need in Ukraine to find fast, cheap, sensitive methods for detecting explosives to detect environmental pollution caused by them. The goal of this project is to design, synthesize, and study the photophysical, electrochemical, and thermal properties of new organic donor-acceptor emitters that can exhibit solid-state enhanced luminescence (SSLE), thermally activated delayed fluorescence (TADF), and room temperature phosphorescence (RTP) for optical detection of nitroaromatic explosives. The main objectives of the project are: 1) Design and theoretical analysis of donor-acceptor type emitter structures that potentially exhibit both SSLE and long-lived radiation. 2) Synthesis and identification of the newly designed most promising emitters containing phenoxazine, phenothiazine, dimethylacridine, etc. as electron-donating moieties and 1,4-bis(trifluoromethyl)benzene, 2,3-diphenylpyrazine, etc., as acceptors. 3) Investigation of thermal, electrochemical, photophysical properties of synthesized organic emitters and comparison with similar known emitters used in nitroaromatic explosives sensors. 4) Estimation of the applicability of the compounds for sensing nitroaromatic complex explosives and creation of a sensor. The main idea is to create an explosives sensor, the prototype of which will be a two-component matrix compound/impurity system, where a newly developed and synthesized compound that exhibits thermally activated delayed fluorescence will be used as the matrix, and a compound similar in energy structure to a nitroaromatic explosive will be used as the impurity. Product Description popup.authors Mykhailo Y. Losytskyi Fedotov Oles Yu. Mykhailo A. Dotsenko popup.nrat_date 2026-04-23 Close