| 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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Chariton, Stella
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Structure and titanium distribution of feiite characterized using synchrotron single-crystal X-ray diffraction techniquescitations
- 2023MHz free electron laser x-ray diffraction and modeling of pulsed laser heated diamond anvil cellcitations
- 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
- 2022Fe$^{3+}$-hosting carbon phases in the deep Earthcitations
- 2022High-pressure synthesis of seven lanthanum hydrides with a significant variability of hydrogen contentcitations
- 2022The new Ca(Fe,Al)$_2$O$_4$ phase with calcium ferrite-type structure, a likely carrier of Al in the transition zone and lower mantlecitations
- 2022Synthesis, crystal structure, and properties of stoichiometric hard tungsten tetraboride, WB4citations
- 2021Nitrosonium nitrate (NO+NO3−) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 2021Realization of an Ideal Cairo Tessellation in Nickel Diazenide NiN$_2$ : High-Pressure Route to Pentagonal 2D Materialscitations
- 2021Nitrosonium nitrate (NO+NO3-) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 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
- 2021Synthesis of Ilmenite-type $ε$-Mn$_2$O$_3$ and Its Propertiescitations
- 2021Realization of an Ideal Cairo Tessellation in Nickel Diazenide NiN2: High-Pressure Route to Pentagonal 2D Materialscitations
- 2020Novel sulfur hydrides synthesized at extreme conditionscitations
- 2020High-Pressure Polymeric Nitrogen Allotrope with the Black Phosphorus Structurecitations
- 2020The crystal structures of Fe-bearing MgCO$_{3}$ sp$^{2}$- and sp$^{3}$-carbonates at 98 GPa from single-crystal X-ray diffraction using synchrotron radiationcitations
- 2020The crystal structures of Fe-bearing MgCO3 sp2- and sp3-carbonates at 98 GPa from single-crystal X-ray diffraction using synchrotron radiationcitations
- 2020The crystal structures of Fe-bearing MgCO3 sp(2)- and sp(3)-carbonates at 98 GPa from single-crystal X-ray diffraction using synchrotron radiationcitations
- 2019Comparative study of the influence of pulsed and continuous wave laser heating on the mobilization of carbon and its chemical reaction with iron in a diamond anvil cellcitations
- 2019High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditionscitations
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.