THE SOURCE OF THE SURFACE FLUORESCENCE OF NANODIAMONDS

1 VERVALD Alexey
Co-authors:
2 KUDRYAVTSEV Oleg 1 LACHKO Andrey 1 BURIKOV Sergey 3 SHENDEROVA Olga 2 VLASOV Igor 1 DOLENKO Tatiana
Institutions:
1 M.V. Lomonosov Moscow State University, Faculty of Physics, Moscow, Russia, alexey.vervald@physics.msu.ru
2 General Physics Institute, Russian Academy of Sciences, Moscow, Russia
3 Adámas Nanotechnologies, Inc., Raleigh, USA
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
323-329
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
Published:
1st April 2020
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
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Abstract

In this paper photoluminescence properties of aqueous suspensions of carbon nanoparticles (nanodiamonds, carbon dots and complexes on their basis) with different ratio of surface carbon in sp3- and sp2-hybridizations were studied by methods of Raman, fluorescence and IR absorption spectroscopy. It was found that intensity of photoluminescence correlates with amount of carbon in non-diamond phase on the surface of nanoparticles. Nanoparticles with high non-diamond carbon phase content revealed more intense photoluminescence. The obtained results support the hypothesis about surface nature of photoluminescence of nanodiamonds and carbon dots.

Keywords: Carbon nanoparticles, photoluminescence, carbon hybridization, spectroscopy
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