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Dynamic Control of Quantum Dot Localization in Nematic Liquid Crystal Matrix by Means of Photoinduced Phase Transitionстатья Исследовательская статья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
- Авторы: Derikov Yaroslav, Ezhov Alexander, Karpov Oleg, Shandryuk Georgiy, Egorov Yuri, Sokolovskaya Olga, Golovan Leonid, Merekalov Alexey, Talroze Raisa
- Журнал: Molecules
- Том: 31
- Номер: 1
- Год издания: 2026
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 131
- DOI: 10.3390/molecules31010131
- Аннотация: The stimulated assembly/disassembly of particles is a technique allowing for precise spatial and temporal control over the resulting structures to be realized. The application of a photosensitive liquid crystal (LC) allows the use of a photo-initiated order–disorder transition for the ordering and redistribution of dispersed nanoparticles. The semiconductor quantum dots (QDs) among them are useful for the imaging of such redistribution through simple luminescent microscopy with excitation by laser radiation at a wavelength of 532 nm. Doping the LC matrix with azo-chromophore molecules allowed us to localize the light-driven phase transition of the LC from the organized to the isotropic phase inside the spot, illuminated by ultraviolet (UV) light through a slit. The phase transition leads to a redistribution of the QDs within the matrix, followed by QD-rich region formation. After the termination of UV illumination, the QDs were found to form droplets in the region where UV illumination resulted in a homogeneous distribution of the QDs. The translation of the sample through the UV-illuminated spot resulted in QD accumulation inside the isotropic phase at the borders of the isotropic phase. The results obtained provide a good agreement with the model calculations of nanoparticle diffusion at the LC phase–isotropic liquid interface.
- Добавил в систему: Соколовская Ольга Игоревна
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