Graphene-like Structures Containing Pentagonal Carbon-rings: Theoretical and Practical Perspectives

The paper presents a theoretical consideration of nanocones, a recently discovered allotropic form of carbon, graphene-like, structured and built of a pentagonal sp²-carbon-ring C₅ fused with 5 benzene rings C₆ which, in their turn, are fused with 10 ones and so on. Its topology is conically shaped and π-system exhibits heterogeneous p-electron distribution due to non-alternant configuration of the molecule. It is shown that these nanoconical structures could be used as molecular blocks to prepare superlight solid-state substances with low densities of 0.01 g·cm⁻³ and less.