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Role of the Polymer Matrix on the Photoluminescence of Embedded CdSe Quantum Dotsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 июля 2019 г.
- Авторы: Tselikov G.I., Timoshenko V.Yu, Golovan L.A., Plenge J., Shatalova A.M., Shandryuk G.A., Kutergina I.Yu, Merekalov A.S., Eckart R., Talroze R.V.
- Журнал: Chemphyschem: a European journal of chemical physics and physical chemistry
- Том: 16
- Номер: 5
- Год издания: 2015
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 1071
- Последняя страница: 1078
- DOI: 10.1002/cphc.201402913
- Аннотация: The photoluminescence (PL) of CdSe quantum dots (QDs) that form stable nanocomposites with polymer liquid crystals (LCs) as smectic C hydrogen-bonded homopolymers from a family of poly[4-(n-acryloyloxyalkyloxy)benzoic acids] is reported. The matrix that results from the combination of these units with methoxyphenyl benzoate and cholesterol-containing units has a cholesteric structure. The exciton PL band of QDs in the smectic matrix is redshifted with respect to QDs in solution, whereas a blueshift is observed with the cholesteric matrix. The PL lifetimes and quantum yield in cholesteric nanocomposites are higher than those in smectic ones. This is interpreted in terms of a higher order of the smectic matrix in comparison to the cholesteric one. CdSe QDs in the ordered smectic matrix demonstrate a splitting of the exciton PL band and an enhancement of the photoinduced differential transmission. These results reveal the effects of the structure of polymer LC matrices on the optical properties of embedded QDs, which offer new possibilities for photonic applications of QD–LC polymer nanocomposites.
- Добавил в систему: Тимошенко Виктор Юрьевич