Diamondiyne: A 3D Carbon Allotrope With Mixed sp–sp3 Hybridization
Artikel i vetenskaplig tidskrift, 2026
The creation of carbon allotropes is synthetically highly challenging, but their practical significance to science and technology cannot be underestimated. Here, we report the synthesis of a new carbon allotrope, diamondiyne, which is the second known one (after diamond) that forms covalent bonds in all three dimensions. Diamondiyne has a mixed sp–sp3 hybridization, resulting in a carbo-mer of diamond with an expanded diamond-topology network. On the nanoscopic scale, two asymmetrically interpenetrated 3D networks form the tetragonal space group I41/amd with unit cell parameters a = b = 11.47 Å and c = 16.22 Å. Amorphous carbon films containing diamondiyne crystals are formed using a cascade reaction at a liquid–liquid interface. Just as for a covalent organic framework, molecular nodes are connected based on geometrical constraints to form an extended structure, and we show that the method is scalable in both the thickness and the lateral direction of the film. New carbon allotropes have historically found widespread use in materials science, and we look forward to what applications might emerge for diamondiyne.
diamond topology
interfacial synthesis
carbon film
carbon allotrope
covalent organic framework (COF)
Författare
Yizhou Yang
Chalmers, Kemi och kemiteknik, Kemi och biokemi
Göteborgs universitet
Jie Xu
Göteborgs universitet
Yanyan Chen
Carpona AB
Yu Xia
Stockholms universitet
Sami Zeliouche
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Clara Schäfer
Göteborgs universitet
Martin Ratsch
Göteborgs universitet
Ebba Matic
Chalmers, Kemi och kemiteknik, Kemi och biokemi
Martin Rahm
Chalmers, Kemi och kemiteknik, Kemi och biokemi
Lars Evenäs
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Angela Beth Grommet
Chalmers, Kemi och kemiteknik, Kemi och biokemi
Tom Willhammar
Stockholms universitet
Karl Börjesson
Göteborgs universitet
Angewandte Chemie
14337851 (ISSN) 15213773 (eISSN)
Vol. In PressÄmneskategorier (SSIF 2025)
Oorganisk kemi
Den kondenserade materiens fysik
DOI
10.1002/anie.4062963
PubMed
42733331