Abstract
Clusters are ensembles of bound atoms intermediate in size between a molecule and a bulk solid. Some of these clusters form stable units with atomically precise structures that give rise to collective behaviours that mimic those of traditional atoms, essentially functioning as ‘superatoms’. Such superatoms are exciting, nanoscale building blocks for materials design. Sustained synthetic and theoretical efforts over the past 40 years have created a vast library of chemically tuneable superatoms that display unique physical and chemical properties. The use of superatoms as building blocks for materials offers opportunities to design materials with tailored functionalities; however, this potential has only begun to be realized in the past few years. The assembly of superatomic crystals presents numerous challenges, including the design of suitable building blocks, control of the self-assembly process, promotion of strong inter-superatom coupling and understanding the resulting collective properties. In this Review, we assess recent advances in meeting these challenges by focusing on metal chalcogenide and carbon-based clusters (for example, fullerenes) as superatomic building blocks.
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Acknowledgements
The authors acknowledge their many collaborators who have helped with these projects. C.N. thanks Sheldon and Dorothea Buckler for their generous support. This work was supported by the Center for Precision Assembly of Superstratic and Superatomic Solids, the US National Science Foundation (NSF) Materials Research Science and Engineering Centers (award no. DMR-1420634) and the US Air Force Office of Scientific Research (award no. FA9550-18-1-0020). X-ray diffraction measurements were performed in the Shared Materials Characterization Laboratory at Columbia University. Use of the Shared Materials Characterization Laboratory was made possible by funding from Columbia University. A.V. was supported by the NSF Graduate Research Fellowship Program (award no. DGE-16-44869). E.A.D. is supported by the NSF (award no. CHE-1807654) and the donors of the American Chemical Society Petroleum Research Fund (award no. ACS PRF# 57062-DNI10). A.M.C. thanks the Arun Guthikonda Memorial Fellowship in Organic Chemistry for their generous support of her studies.
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Doud, E.A., Voevodin, A., Hochuli, T.J. et al. Superatoms in materials science. Nat Rev Mater 5, 371–387 (2020). https://doi.org/10.1038/s41578-019-0175-3
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A general method for metallocluster site-differentiation
Nature Synthesis (2023)
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From Atomic Physics to Superatomic Physics
Journal of Cluster Science (2023)