Amorphous Carbon Films with Embedded Well-Dispersed Nanodiamonds: Plasmon-Enhanced Analysis and Possible Antimicrobial Applications

Streletskiy, O.; Perevedentseva, E.; Zavidovskiy, I.; Karmenyan, A.; Sychev, V.; Sadykova, V.; Kuvarina, A.; Cheng, C.

Авторы: Streletskiy Oleg, Perevedentseva Elena, Zavidovskiy Ilya, Karmenyan Artashes, Sychev Vladimir, Sadykova Vera, Kuvarina Anastasia, Cheng Chia-Liang
Журнал: Magnetochemistry
Том: 8
Номер: 12
Год издания: 2022
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Первая страница: 171
DOI: 10.3390/magnetochemistry8120171
Аннотация: : An amorphous carbon film with embedded detonation nanodiamond (DND) particles (a-C:ND) was produced by magnetron sputtering of nanodiamond powder. An Ag film was deposited on the carbon structure by radiofrequency magnetron sputtering. The silver film was irradiated with a 150 eV Ar+to form plasmonic-active nanoparticles (NP) on the surface of the a-C:ND. The structureof the obtained a-C:ND and a-C:ND/Ag structures were studied by scanning and transmissionelectron microscopy, electron energy-loss spectroscopy, UV–Visible absorption spectroscopy, Raman spectroscopy, and fluorescence lifetime imaging at two-photon excitation. The analysis revealed 76% of sp3-carbon and a good dispersion of diamond nanoparticles in the a-C. Surface-enhancedRaman scattering (SERS) was applied to investigate the a-C:ND/Ag structure, allowing for theobservation of SERS from the sp2-carbon species and the absence of significant a-C:ND damage after Ar+ irradiation of the Ag overlayer. A plasmonic-metal-enhanced luminescence was observed at one- and two-photon excitations, revealing a two- to five-fold intensity increase. The activity of the used DNDs was tested using the agar diffusion method and observed against the bacteria of Bacillus subtilis, Staphylococcus aureus, and Escherichia coli and the fungi of Aspergillus niger, Aspergillus fumigatus, and the yeast of Candida albicans, showing DND activity against all the test strains of fungi.
Добавил в систему: Завидовский Илья Алексеевич

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Amorphous Carbon Films with Embedded Well-Dispersed Nanodiamonds: Plasmon-Enhanced Analysis and Possible Antimicrobial Applicationsстатья

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