Ultra-small metal particles having band gaps are regarded as a new class of functional materials. We investigated the size dependencies of the band-edge energies on Cu quantum-dots in the size range of 0.7–2.1 nm. The extremely high conduction band-edge energies owing to the strong quantum-size effects were observed for sizes below 1 nm.
T. Matsui, H. Watanabe, S. Somekawa, S. Yanagida, Y. Oaki and H. Imai, Chem. Commun., 2024, 60, 4419 DOI: 10.1039/D4CC00260A
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