An application of 2D-BN nanoparticles as spectroscopic marker, weak luminescent marker and anticancer drug (doxorubicin, DOX) delivery system with protection property was studied for the LNCaP strains of cancer cells.

Vibration spectra of different carbon‐based materials—soot, natural flake graphite, exfoliated graphite and, single‐walled nanotubes—have been studied by SEIRA (surface enhanced infrared absorption) spectroscopy and compared with FTIR and Raman spectroscopy. The SEIRA method is a more sensitive tool for characterisation of contamination structure and optical properties of carbon materials than conventional IR spectroscopy. Our study showed that second‐order modes in Raman spectra could be used for characterisation of nanodimensional tube‐like structure in carbon materials.

Surface-enhanced infrared absorption effect was shown for graphene for the first time. Comparative analysis of the effect was carried out for thymine (Thy), one of the bases of DNA, absorbed on single-wall carbon nanotubes (SWCNT) and graphene sheets. The enhancement factor in the case of SWCNT was generally greater in comparison with that obtained for graphene sheets. Its value for SWCNT was up to six and the largest enhancement factors were found for vibrations of CH, $C─OH$, and $C─N$ bonds. The maximum enhancement factor in the case of graphene sheets equal to 3.7 was found for ring and deformational vibrations of N–H bonds. The obtained experimental data allowed us to suppose that H-bonds influence the interaction between SWCNT and Thy in Thy-SWCNT/Au, while the chemically induced charge transfer is probably dominant in the case of Thy-graphene/Au.

Photoluminescent graphene quantum dots (GQDs) the one- or two-layer graphene nanoparticles 1.5–3 nm in size with a blue emission have been obtained from electrochemically synthesized partially unzipped multi-walled carbon nanotubes ultrasonically treated for one hour. Various physicochemical methods including photoluminescence spectroscopy, XRD, TEM, and Raman spectroscopy, have been used to characterize the electrochemically synthesized partially unzipped multi-walled carbon nanotubes and GQDs. Two-layer oxygen electrodes were fabricated, where GQDs served as an active layer. The investigations of electrocatalytic characteristics of the oxygen electrodes fabricated of the obtained materials were carried out in a fuel half-cell with an alkaline electrolyte. The fabricated oxygen electrodes were stable for six months at a discharge current density of 200 mA cm ⁻² . The obtained GQDs are promising materials as a new type of catalyst carriers for oxygen electrodes of fuel cells.

Numerous structural defects, such as vacancies, dislocations, admixtures, grain boundaries and edges in the 2 D-MoS₂ particles change their optical, mechanical, and electrical properties that influences their application. Here we investigate the heat annealing of MoS₂ particles at 700 °C in an argon atmosphere, and demonstrate the appearance of sulfur vacancies in them using FTIR spectroscopy. The new IR absorption bands belonging to deformation and stretching vibrations of $S{O}_4^{2-}$ anions centered at 614 cm⁻¹ and 1115 cm⁻¹, respectively, were registered after annealing. In both MoS₂ samples, those before and after the heat annealing, the Mo-O_x vibrations were registered by FTIR and Raman spectroscopy. Negligible changes observed in the Raman spectra of the title compound are discussed.