ArticleNanomaterials (Basel, Switzerland)2022
Size-Dependent Thermal Stability and Optical Properties of Ultra-Small Nanodiamonds Synthesized under High Pressure.
Article in Nanomaterials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Nanodiamond: a multifaceted exploration of electrospun nanofibers for antibacterial and wound healing applications.Journal of nanobiotechnology · 2025Review
- High-Yield Production of SiV-Doped Nanodiamonds for Spectroscopy and Sensing Applications.ACS applied nano materials · 2024Article
- Carbon-Based Nanostructures as Emerging Materials for Gene Delivery Applications.Pharmaceutics · 2024Review
- Absolute energy levels in nanodiamonds of different origins and surface chemistries.Nanoscale advances · 2023Article
- Surface Tamm States of 2-5 nm Nanodiamond via Raman Spectroscopy.Nanomaterials (Basel, Switzerland) · 2023Article
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Authors and funding
7 authors.
Funding
Abstract
Diamond properties down to the quantum-size region are still poorly understood. High-pressure high-temperature (HPHT) synthesis from chloroadamantane molecules allows precise control of nanodiamond size. Thermal stability and optical properties of nanodiamonds with sizes spanning range from <1 to 8 nm are investigated. It is shown that the existing hypothesis about enhanced thermal stability of nanodiamonds smaller than 2 nm is incorrect. The most striking feature in IR absorption of these samples is the appearance of an enhanced transmission band near the diamond Raman mode (1332 cm-1). Following the previously proposed explanation, we attribute this phenomenon to the Fano effect caused by resonance of the diamond Raman mode with continuum of conductive surface states. We assume that these surface states may be formed by reconstruction of broken bonds on the nanodiamond surfaces. This effect is also responsible for the observed asymmetry of Raman scattering peak. The mechanism of nanodiamond formation in HPHT synthesis is proposed, explaining peculiarities of their structure and properties.
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