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https://elib.bsu.by/handle/123456789/262539
Заглавие документа: | Robust Polymer Matrix Based on Isobutylene (Co)polymers for Efficient Encapsulation of Colloidal Semiconductor Nanocrystals |
Авторы: | Shiman, D.I. Sayevich, V. Meerbach, C. Nikishau, P.A. Vasilenko, I.V. Gaponik, N. Kostjuk, S.V. Lesnyak, V. |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Химия |
Дата публикации: | 2019 |
Издатель: | American Chemical Society |
Библиографическое описание источника: | ACS Appl Nano Mat 2019;2(2):956-963. |
Аннотация: | We introduce new oxygen-and moisture-proof polymer matrixes based on polyisobutylene (PIB) and its block copolymer with styrene [poly(styrene-block-isobutylene-block-styrene), PSt-b-PIB-b-PSt] for the encapsulation of colloidal semiconductor nanocrystals. In order to prepare transparent and processable composites, we developed a special procedure of nanocrystal surface engineering including ligand exchange of parental organic ligands to inorganic species followed by the attachment of specially designed short-chain PIB functionalized with an amino group. The latter provides excellent compatibility of the particles with the polymer matrixes. As colloidal nanocrystals, we chose CdSe nanoplatelets (NPLs) because they possess a large surface and thus are very sensitive to the environment, in particular in terms of their limited photostability. The encapsulation strategy is quite general and can be applied to a wide variety of semiconductor nanocrystals, as demonstrated on the example of PbS quantum dots. All obtained composites exhibited excellent photostability, being tested in a focus of a powerful white-light source, as well as exceptional chemical stability in a strongly acidic media. We compared these properties of the new composites with those of widely used polyacrylate-based materials, demonstrating the superiority of the former. The developed composites are of particular interest for application in optoelectronic devices, such as color-conversion light-emitting diodes, laser diodes, luminescent solar concentrators, etc. |
URI документа: | https://elib.bsu.by/handle/123456789/262539 |
DOI документа: | 10.1021/acsanm.8b02262 |
Scopus идентификатор документа: | 85070543956 |
Располагается в коллекциях: | Статьи химического факультета |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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статья.pdf | 2,57 MB | Adobe PDF | Открыть |
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