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Absolute luminescence quantum yield for nanosized carbon particles in water as a function of excitation wavelengthстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Laptinskiy Kirill A., Burikov Sergey A., Patsaeva Svetlana V., Vlasov Igor I., Shenderova Olga A., Dolenko Tatiana A.
- Журнал: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
- Том: 229
- Номер: 117879
- Год издания: 2020
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- DOI: 10.1016/j.saa.2019.117879
- Аннотация: The absolute luminescence quantum yield Q as a function of excitation wavelength λex in a wide spectral range 270–470 nm was measured for the first time for the group of carbon nanoparticles dispersed in water: carbon dots (CD), detonation nanodiamonds (DND), as well as detonation nanodiamonds decorated with carbon dots (CD-DND). The luminescence quantum yield for DND increased after functionalization; the CD-decorated DND demonstrated significantly higher Q values in the UV region of excitation. We found that the quantum yield for CD luminescence is 4–8 times higher than that for CD-DND luminescence, and 20 times higher than that for DND luminescence. Roughly three spectral regions can be distinguished within the Q(λex): below 330 nm, 330–390 nm and 390–470 nm. Conclusions are drawn about the number of chromophores of the studied nanoparticles and transfer of photoexcitation energy in the systems under consideration.
- Добавил в систему: Пацаева Светлана Викторовна