Giant dielectric permittivity of detonation-produced nanodiamond is caused by water

Бацанов, С. С.; Гаврилкин, С. М.; Batsanov, Andrei S.; Poyarkov, K. B.; Кулакова, И. И.; Johnson, D. W.; Mendis, Budhika G.

doi:10.1039/c2jm30836c

Cited by 54 publications

(50 citation statements)

References 43 publications

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“…4) show that DNDs were deposited on HOPG in similar chain-like deposits using electrophoretic deposition [18] without any obvious morphology dependence on the DND surface chemistry or water adsorption differences. The deposition of both H-DNDs and ODNDs on HOPG from the related colloids took place preferentially at the step edges of otherwise atomically flat HOPG.…”

Section: Discussionmentioning

confidence: 98%

“…Recent study showed that orientation of water molecules in the first solvation shell depends on the zeta potential of NDs [17]. Giant dielectric permittivity of DNDs was also attributed to adsorbed water (1%-4%) but actual mechanism required further investigation, being tentatively related to proton-releasing functional groups on DNDs [18].…”

Section: Introductionmentioning

confidence: 98%

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Water interaction with hydrogenated and oxidized detonation nanodiamonds — Microscopic and spectroscopic analyses

Stehlík

Glatzel

Pichot

et al. 2016

Diamond and Related Materials

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a b s t r a c tWater interaction with surface modified nanodiamonds (NDs) is critical for many possible applications of NDs e.g. in biomedicine. Here we report on investigation of water interaction with hydrogenated and oxidized detonation nanodiamonds (H-DNDs, O-DNDs) by means of Fourier transform infrared spectroscopy (FTIR), thermal analysis, and Kelvin probe force microscopy (KPFM). Higher water content (4.4%) as well as weaker interaction of water with H-DNDs are identified by thermal analysis. It is explained by hydrophobicity of the H-DND surface, as revealed by the analysis of bending and stretching vibrations of surface water in FTIR spectra. On the other hand, hydrophilic nature of O-DNDs leads to lower water content (3.1%) but stronger interaction with the O-DND surface. This is evidenced by as high as 300°C desorption temperature of the surface water from O-DNDs. KPFM analysis shows that the surface-bound water can have significant screening effect on contact potential difference (CPD) of nanodiamonds (up to 510 mV) as well as on the CPD difference between H-DNDs and O-DNDs (from 50 mV to 210 mV). Nevertheless, H-DNDs exhibit always lower work function.

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Water interaction with hydrogenated and oxidized detonation nanodiamonds — Microscopic and spectroscopic analyses

Stehlík

Glatzel

Pichot

et al. 2016

Diamond and Related Materials

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show abstract

“…consisted either of pure commercial RDX or of RDX doped with 5% of graphitic carbon black, yielding ND products 1 and 2, respectively. BTF-derived HFND 3 [27] and ordinary ND 4 [30] were prepared as described earlier and purified identically to 1 and 2. Teflon and (for centrifugation) nalgene vessels were used throughout, to exclude contamination by silica from glassware.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Novel synthesis and properties of hydrogen-free detonation nanodiamond

Бацанов

Осавчук

Naumov

et al. 2018

Materials Chemistry and Physics

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“…Secondly, it may occur due to the direct interaction between the protein and substrate with low dielectric permittivity. The ND's low dielectric permittivity (ε) of 8.7 69 could potentially lead to a shift of the carboxyl group's dissociation equilibrium toward the neutral protonated species. However, without further study, it is uncertain whether protein denaturation or direct ND interaction, or a combination of both, is responsible for the protonation.…”

Section: Effect Of Nd On Intracellular Proteinmentioning

confidence: 99%

Biospectroscopy of Nanodiamond-Induced Alterations in Conformation of Intra- and Extracellular Proteins: A Nanoscale IR Study

et al. 2016

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The toxicity of nanomaterials raises major concerns because of the impact that nanomaterials may have on health, which remains poorly understood. We need to explore the fate of individual nanoparticles in cells at nano and molecular levels to establish their safety. Conformational changes in secondary protein structures are one of the main indicators of impaired biological function, and hence, the ability to identify these changes at a nanoscale level offers unique insights into the nanotoxicity of materials. Here, we used nanoscale infrared spectroscopy and demonstrated for the first time that nanodiamond-induced alterations in both extra- and intracellular secondary protein structures lead to the formation of antiparallel β-sheet, β-turns, intermolecular β-sheet, and aggregation of proteins. These conformational changes of the protein structure may result in the loss of functionality of proteins and in turn lead to adverse effects.

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Giant dielectric permittivity of detonation-produced nanodiamond is caused by water

Cited by 54 publications

References 43 publications

Water interaction with hydrogenated and oxidized detonation nanodiamonds — Microscopic and spectroscopic analyses

Water interaction with hydrogenated and oxidized detonation nanodiamonds — Microscopic and spectroscopic analyses

Novel synthesis and properties of hydrogen-free detonation nanodiamond

Biospectroscopy of Nanodiamond-Induced Alterations in Conformation of Intra- and Extracellular Proteins: A Nanoscale IR Study

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