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Liquid-Crystalline Polymer Composites with CdS Nanorods: Structure and Optical Propertiesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Ezhov Alexander A., Shandryuk Georgii A., Bondarenko Galina N., Merekalov Alexey S., Abramchuk Sergey S., Shatalova Alina M., Manna Pramit, Zubarev Eugene R., Talroze Raisa V.
- Журнал: Langmuir
- Том: 27
- Номер: 21
- Год издания: 2011
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 13353
- Последняя страница: 13360
- DOI: 10.1021/la203258r
- Аннотация: We report on the structure, uniaxial orientation, and photoluminescent properties of CdS nanorods that form stable nanocomposites with smectic C hydrogen-bonded polymers from the family of poly(4-(n-acryloyloxyalkoxy)benzoic acids. TEM analysis of microtomed films of nanocomposites reveals that CdS nanorods form small domains that are homo geneously distributed in the LC polymer matrix. They undergo long-range orientation with the formation of one-dimensional aggregates of rods when the composite films are uniaxially deformed. The Stokes photoluminescence inn was observed from CdS NRs/LC polymer composites with emission peak located almost at the same wavelength as that of NRs solution in heptane. An anti-Stokes photoluminescence (ASPL) in polymer nanocomposites was found under the excitation below the nanoparticles ground state. The mechanism of ASPL was interpreted in terms of thermally populated states that are involved in the excitation process. These nanocomposites represent an unusual material in which the optical properties of anisotropic semiconductor nanostructures can be controlled by mechanical deformation of liquid-crystalline matrix.
- Добавил в систему: Ежов Александр Анатольевич