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Direct Observation of a Quasilocalized Low-Frequency Vibrational Mode in the Fluorescence Excitation Spectrum of a Single Impurity Molecule in a Polymer Matrixстатья
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: 23 января 2020 г.
- Авторы: Savostianov A.O., Eremchev I.Yu, Gorshelev A.A., Orlov S.V., Starukhin A.S., Naumov A.V.
- Журнал: Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
- Том: 126
- Номер: 1
- Год издания: 2019
- Издательство: Optical Society of America
- Местоположение издательства: United States
- Первая страница: 44
- Последняя страница: 48
- DOI: 10.1134/s0030400x19010156
- Аннотация: The possibility of direct observation of a quasi-localized elementary excitation of the phonon type in polyisobutylene has been demonstrated by detecting the fluorescence excitation spectrum of a Mg-tetrazaporphyrin single probe molecule in a wide spectral range at a temperature of 6 K. The parameters of the quasilocalized low-frequency vibrational mode have been measuredthe frequency (energy) in the case, when impurity molecule is in excited electronic state ((e) = 13.94 +/- 0.21 cm(-1)) and the halfwidth of the mode spectrum ( = 3.82 +/- 0.66 cm(-1)). The measured energy of the low-frequency vibrational mode coincides with the position of a boson peak maximum in the spectrum of vibrational states of the polymer, which indicates that the weak coupling approach can be applied to the considered case of the electron-phonon interaction of an organic dye molecule with the local environment in a polymer matrix.
- Добавил в систему: Коновко Андрей Андреевич