| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dubrovinskaia, Natalia
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2023Structure determination of ζ-N2 from single-crystal X-ray diffraction and theoretical suggestion for the formation of amorphous nitrogencitations
- 2022Synthesis of Ultra-Incompressible Carbon Nitrides Featuring Three-Dimensional Frameworks of CN4 Tetrahedra Recoverable at Ambient Conditions
- 2022Fe0.79Si0.07B0.14 metallic glass gaskets for high-pressure research beyond 1 Mbarcitations
- 2022High-pressure synthesis of seven lanthanum hydrides with a significant variability of hydrogen contentcitations
- 2022Synthesis, crystal structure, and properties of stoichiometric hard tungsten tetraboride, WB4citations
- 2022Domain Auto Finder (DAFi) program: the analysis of single-crystal X-ray diffraction data from polycrystalline samplescitations
- 2022Fe₀.₇₉Si₀.₀₇B₀.₁₄ metallic glass gaskets for high-pressure research beyond 1Mbarcitations
- 2021Nitrosonium nitrate (NO+NO3−) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 2021High-Pressure Yttrium Nitride, $Y_{5}N_{14}$, Featuring Three Distinct Types of Nitrogen Dimerscitations
- 2021Nitrosonium nitrate (NO$^+$NO$_3$$^{−}$) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 2021High-Pressure Synthesis of Dirac Materials: Layered van der Waals Bonded BeN$_{4}$ Polymorphcitations
- 2021High-Pressure Synthesis of the $β-Zn_{3}N_{2}$ Nitride and the $α-ZnN_{4}$ and $β-ZnN_{4}$ Polynitrogen Compoundscitations
- 2020Novel sulfur hydrides synthesized at extreme conditionscitations
- 2020High-Pressure Polymeric Nitrogen Allotrope with the Black Phosphorus Structurecitations
- 2020Proton mobility in metallic copper hydride from high-pressure nuclear magnetic resonancecitations
- 2019Equations of state of rhodium, iridium and their alloys up to 70 GPacitations
- 2019High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditionscitations
- 2018Disorder–order transitions in the perovskite metal–organic frameworks [(CH₃)₂NH₂][M(HCOO)₃] at high pressurecitations
- 2018Disorder–order transitions in the perovskite metal–organic frameworks $[(CH_{3})_{2}NH_{2} ][M(HCOO)_{3}]$ at high pressurecitations
- 2017Effect of composition on compressibility of skiagite-Fe-majorite garnetcitations
- 2016Structural distortions in the high-pressure polar phases of ammonium metal formatescitations
- 2016Stability of Fe,Al-bearing bridgmanite in the lower mantle and synthesis of pure Fe-bridgmanitecitations
- 2013Experimental evidence of orbital order in $α-B_{12} and γ-B_{28}$ polymorphs of elemental boroncitations
- 2011Electron-Deficient and Polycenter Bonds in the High-Pressure gamma-B-28 Phase of Boroncitations
- 2010Pressure-induced isostructural phase transformation in gamma-B(28)citations
- 2007Superhard nanocomposite of dense polymorphs of boron nitride: Noncarbon material has reached diamond hardnesscitations
Places of action
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article
Synthesis of Ultra-Incompressible Carbon Nitrides Featuring Three-Dimensional Frameworks of CN4 Tetrahedra Recoverable at Ambient Conditions
Abstract
More than thirty years ago, carbon nitrides featuring 3D frameworks of tetrahedral CN4 units were identified as one of the great aspirations of materials science, expected to have a hardness greater than or comparable to diamond. Since then, no unambiguous experimental evidence of their existence has been delivered. Here, we report the high-pressure high-temperature synthesis of the long-sought-after covalent carbon nitrides, tI14-C3N4, hP126-C3N4, and tI24-CN2, in laser-heated diamond anvil cells. Their structures were solved and refined using synchrotron single-crystal X-ray diffraction. In these solids, carbon atoms, all sp3-hybridized, and nitrogen atoms are fully saturated, forming four and three covalent bonds, respectively, leading to three-dimensional arrangements of corner-sharing CN4 tetrahedra. These carbon nitrides are ultra-incompressible, with hP126-C3N4 and tI24-CN2 even rivalling diamond's incompressibility, and superhard. These novel compounds are recoverable to ambient conditions in crystalline form and chemically stable in air. Being wide-band gap semiconductors with intriguing features in their electronic structure, they are expected to exhibit multiple exceptional functionalities besides their mechanical properties, opening new perspectives for materials science.