A Comprehensive Study of the Effect of Thermally Induced Surface Terminations on Nanodiamonds Electrical Properties

Creation, Control, and Modeling of NV Centers in Nanodiamonds

“…On one hand, the nitrogen flux provides an inert environment that prevents the chemical etching of diamond that would occur above 500 °C in presence of oxygen. [36] On the other hand, despite the inert atmosphere, a temperature below 900 °C was necessary to prevent the samples from graphitization [34,49] and the conversion to "carbon onion" structures. [50] Therefore, the HTTA process was performed at 800 °C.…”

“…As expected, higher temperatures determine a general increase in oxygen-containing functional groups absorption features. At lower processing times (3 h), a gradual enhancement of both C═O (1820-1750 cm −1 ) and O─H (3G00-3000 cm −1 ) stretching bands [18,34] is observed, while H 2 O bending ≈1G25 cm −1 associated with water adsorption is only weakly increased with increasing oxidation temperature. A shift of 𝜈(C═O) toward higher wavenumbers is also evident.…”

“…Intermediate aggressive conditions further increase carboxylic, and more generally C═O, groups, also promoting the development of aldehydes, lactones, and ketones, as evidenced by the shift of 𝜈(C═O) absorption band. [18,34] Finally, high temperatures and process times promote the formation of ether/epoxy-like (C─O─C/C─O) species, which further favor the adsorption of water in molecular form.…”

Designing functionalized nanodiamonds with hyaluronic acid–phospholipid conjugates for enhanced cancer cell targeting and fluorescence imaging capabilities

“…1 As a result, a wide variety of methods for their production has been developed, encompassing both top-down approaches, like detonation of carbon-containing explosives 1,2 and grinding of High-Pressure High-Temperature (HPHT) microdiamond powders, 3 and bottom-up techniques, such as Chemical Vapor Deposition (CVD) 4 and synthesis from adamantane derivatives. 5 Similarly, an extensive array of post-synthetic procedures, including treatments with microwave plasma, 6,7 high-temperature thermal processes in controlled environments [8][9][10] and wet chemistrybased strategies, [11][12][13] have been established. This combined spectrum of synthesis methods and subsequent modifications enables the creation of NDs with diverse sizes, covering the 5-300 nm range, morphologies, and surface characteristics.…”