Entangled Interlocked Diamond-like (Diamondiynes) Lattices

2025/06/11 by Carlos M. O. Bastos, Bastos, C. M. O., Emanuel José Alexandrino dos Santos +8
Materials Science · #00-XX #Boron and Carbon Nanomaterials Research #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Graphene research and applications #I.2 #J.6 #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)

paper · pdf · doi:10.48550/arxiv.2506.10181

openalex publication_date 2025/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Diamondynes, a new class of diamond-like carbon allotropes composed of carbon with sp²/sp³-hybridized carbon networks, exhibit unique structural motifs that have not been previously reported in carbon materials. These architectures feature sublattices that are both interlocked and capable of relative movement. Using ab initio simulations, we have conducted an extensive investigation into the structural and electronic properties of five diamondyne structures. Our results show that diamondiynes are thermodynamically stable and exhibit wide electronic band gaps, from 2.2 eV to 4.0 eV. They are flexible yet highly resistant compared to other diamond-like structures. They have relatively small cohesive energy values, consistent with the fact that one diamondyne structure (2f-unsym) has already been experimentally realized. Our results provide new physical insights into diamond-like carbon networks and suggest promising directions for the development of porous, tunable frameworks with potential applications in energy storage and conversion.

Citations

• Nanomechanical behavior of pentagraphyne-based single-layer and nanotubes through reactive classical molecular dynamics
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