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Penta-graphene is a hypothetical carbon allotrope composed entirely of carbon pentagons and resembling the Cairo pentagonal tiling. Penta-graphene was proposed in 2014 on the basis of analyses and simulations. Further calculations predicted that it is unstable in its pure form, but can be stabilized by hydrogenation. Due to its atomic configuration, penta-graphene has an unusually negative Poisson’s ratio and very high ideal strength believed to exceed that of a similar material, graphene.

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dbo:abstract
  • El pentagrafeno es un alótropo teórico del carbono compuesto enteramente por pentágonos de átomos de carbono que se asemejan a las baldosas pentágonales de las aceras de El Cairo​ fue propuesto en 2014 mediante modelos informáticos.​ Los cálculos teóricos muestran que el pentagrafeno es estable, incluso a temperaturas de hasta 1000K (aprox. 750 C).​ Debido a su configuración atómica, el pentagrafeno tienen un coeficiente de Poisson negativo, lo que significa que, si se estira longitudinalmente, se expande transversalmente en lugar de encogerse, algo muy inusual. También posee una fortaleza mecánica ultraalta.​ (es)
  • Le pentagraphène est un matériau bidimensionnel cristallin, une forme allotropique du carbone, selon un maillage pentagonal isoédrique analogue au pavage du Caire. (fr)
  • Penta-graphene is a hypothetical carbon allotrope composed entirely of carbon pentagons and resembling the Cairo pentagonal tiling. Penta-graphene was proposed in 2014 on the basis of analyses and simulations. Further calculations predicted that it is unstable in its pure form, but can be stabilized by hydrogenation. Due to its atomic configuration, penta-graphene has an unusually negative Poisson’s ratio and very high ideal strength believed to exceed that of a similar material, graphene. Penta-graphene contains both sp2 and sp3 hybridized carbon atoms. Contrary to graphene, which is a good conductor of electricity, penta-graphene is predicted to be an insulator with an indirect band gap of 4.1–4.3 eV. Its hydrogenated form is called penta-graphane. It has a diamond-like structure with sp3 and no sp2 bonds, and therefore a wider band gap (ca. 5.8 eV) than penta-graphene. Chiral penta-graphene nanotubes have also been studied as metastable allotropes of carbon. (en)
  • Penta-grafen – zaproponowana w 2014 roku alotropowa odmiana węgla, strukturalnie przypominająca parkietaż typu „Cairo” ułożony z pięciokątów nieforemnych. Teoretyczne obliczenia wskazują, że struktura taka może być stabilna i wytrzymywać temperatury >700 °C. (pl)
  • 五邊石墨烯是一種假設的碳的同素異形體。 (zh)
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  • PG (en)
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  • Top view and side view of penta-graphane. Yellow and blue spheres show two types of carbon atoms, while red balls correspond to hydrogens. (en)
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  • Penta-graphane.png (en)
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  • 250 (xsd:integer)
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  • PG (en)
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  • El pentagrafeno es un alótropo teórico del carbono compuesto enteramente por pentágonos de átomos de carbono que se asemejan a las baldosas pentágonales de las aceras de El Cairo​ fue propuesto en 2014 mediante modelos informáticos.​ Los cálculos teóricos muestran que el pentagrafeno es estable, incluso a temperaturas de hasta 1000K (aprox. 750 C).​ Debido a su configuración atómica, el pentagrafeno tienen un coeficiente de Poisson negativo, lo que significa que, si se estira longitudinalmente, se expande transversalmente en lugar de encogerse, algo muy inusual. También posee una fortaleza mecánica ultraalta.​ (es)
  • Le pentagraphène est un matériau bidimensionnel cristallin, une forme allotropique du carbone, selon un maillage pentagonal isoédrique analogue au pavage du Caire. (fr)
  • Penta-grafen – zaproponowana w 2014 roku alotropowa odmiana węgla, strukturalnie przypominająca parkietaż typu „Cairo” ułożony z pięciokątów nieforemnych. Teoretyczne obliczenia wskazują, że struktura taka może być stabilna i wytrzymywać temperatury >700 °C. (pl)
  • 五邊石墨烯是一種假設的碳的同素異形體。 (zh)
  • Penta-graphene is a hypothetical carbon allotrope composed entirely of carbon pentagons and resembling the Cairo pentagonal tiling. Penta-graphene was proposed in 2014 on the basis of analyses and simulations. Further calculations predicted that it is unstable in its pure form, but can be stabilized by hydrogenation. Due to its atomic configuration, penta-graphene has an unusually negative Poisson’s ratio and very high ideal strength believed to exceed that of a similar material, graphene. (en)
rdfs:label
  • Pentagrafeno (es)
  • Pentagraphène (fr)
  • Penta-graphene (en)
  • Penta-grafen (pl)
  • 五邊石墨烯 (zh)
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