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Two organic-inorganicmanganese(II) halidehybrids containingprotonatedN,N'-dialkylthioureaswith efficientgreen-emission Golovnev Nicolay N.Gerasimova Marina A.Ostapenko Ivan A.2023 год

Two organic-inorganic manganese(II) halide hybrids containing protonated N,N'-dialkylthioureas with efficient green-emission : научное издание
статья из журнала

Дополнительные ссылки: eLibrary
База данных: Каталог библиотеки СФУ
Библиографическое описание: Two organic-inorganic manganese(II) halide hybrids containing protonated N,N'-dialkylthioureas with efficient green-emission : научное издание / Nicolay N. Golovnev [et al.]. - Текст : непосредственный // Journal of Molecular Structure. - 2023. - Т.1277, №. - P. 134851. - ISSN 0022-2860, DOI 10.1016/j.molstruc.2022.134851.
Аннотация: Luminescent (C5H13N2S)2[MnBr4] (1) and (C7H17N2S)2[MnBr4] (2) (C5H12N2S = N,N′-diethylthiourea, C7H16N2S = N,N′-diisopropylthiourea) were prepared via solvothermal method, and the structures of these compounds have been resolved using X-ray single crystal diffraction. The structures consist of electrostatically bound MnBr42− anions and organic C5H13N2S+ and C7H17N2S+ cations. The intermolecular N−H···Br and N−H···S hydrogen bonds additionally stabilize crystal structures of 1-2. Upon excitation over broadband covering the range 265 to 515 nm, these compounds show green emission peaking at 526 nm for 1 and 522 nm for 2, which is assigned to the 4T1→ 6A1 electronic transition of Mn2+ from isolated within the crystal structures MnBr42− tetrahedra. The photoluminescence quantum yield (PLQY) of powder 1 is 97 ± 7% for excitation at 440 nm and that of powder 2 is 83 ± 7% for excitation at 365 nm. The high PLQY indicates the absence of noticeable concentration quenching at shortest Mn···Mn distance of 8.11 and 8.73 Å between Mn2+ ions within the structures of 1 and 2. The high-performance photoluminescence of 0D (C5H13N2S)2[MnBr4] and (C7H17N2S)2[MnBr4] compounds demonstrated promising applications in photonics.
Год издания: 2023
Авторы: Golovnev Nicolay N. , Gerasimova Marina A. , Ostapenko Ivan A. , Zolotov Andrey O. , Molokeev Maxim S.
Издательство: Elsevier Science Publishing Company, Inc.
Источник: Journal of Molecular Structure
Выпуск: Т.1277
Номера страниц: 134851
Держатель оригинала документа: Kemerovo State University, Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science, Siberian Federal University
Количество экземпляров:
Твёрдая копия издания отсутствует в фонде библиотеки

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