Publication:
Hybrid fluorescent liquid crystalline composites: Directed assembly of quantum dots in liquid crystalline block copolymer matrices

Файлы
W3017276887.pdf(2.18 MB)
Дата
2020
Авторы
Bugakov, M.
Abdullaeva, S.
Abramchuk, S.
Shibaev, V.
Samokhvalov, P.
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Научные группы
Организационные подразделения
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Организационная единица
Инженерно-физический институт биомедицины
Цель ИФИБ и стратегия развития – это подготовка высококвалифицированных кадров на базе передовых исследований и разработок новых перспективных методов и материалов в области инженерно-физической биомедицины. Занятие лидерских позиций в биомедицинских технологиях XXI века и внедрение их в образовательный процесс, что отвечает решению практикоориентированной задачи мирового уровня – диагностике и терапии на клеточном уровне социально-значимых заболеваний человека.
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Аннотация
This journal is © 2020 The Royal Society of Chemistry.Hybrid fluorescent liquid crystalline (LC) composites containing inorganic quantum dots (QDs) are promising materials for many applications in optics, nanophotonics and display technology, combining the superior emission capability of QDs with the externally controllable optical properties of LCs. In this work, we propose the hybrid LC composites that were obtained by embedding CdSe/ZnS QDs into a series of host LC block copolymers of different architectures by means of a two-stage ligand exchange procedure. The ABA/BAB triblock copolymers and AB diblock copolymers with different polymerization degrees are composed of nematogenic phenyl benzoate acrylic monomer units and poly(4-vinylpyridine) blocks, which are capable of binding to the QD surface. Our results clearly show that the spatial distribution of QDs within composite films as well as the formation of QD aggregates can be programed by varying the structure of the host block copolymer. The obtained composites form a nematic LC phase, with isotropization temperatures being close to those of the initial host block copolymers. In addition, the influence of the molecular architecture of the host block copolymers on fluorescence properties of the obtained composites is considered. The described strategy for the QD assembly should provide a robust and conventional route for the design of highly ordered hierarchical hybrid materials for many practical applications.
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Hybrid fluorescent liquid crystalline composites: Directed assembly of quantum dots in liquid crystalline block copolymer matrices / Bugakov, M. [et al.] // RSC Advances. - 2020. - 10. - № 26. - P. 15264-15273. - 10.1039/d0ra02442b
URI
https://www.doi.org/10.1039/d0ra02442b
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85084135864&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000530037900029
 https://openrepository.mephi.ru/handle/123456789/21609
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