Interweaving boron with metal atoms within a two-dimensional plane represents a promising strategy to fabricate unconventional boron networks. However, the practical synthesis and structural determination of such materials remain significantly challenging. Recent experimental realizations of epitaxial copper borides have pioneered the exploration of these unique boron networks. Here, we provide a comprehensive review of these advances, focusing on the structural resolution of the Cu8B14 phase on Cu(111)—originally debated as borophene—and the predicted Cu7B15 phase, alongside the recently realized metalloborophene CuB4. Finally, we outline future directions for extending this boride family and exploring their potential in superconductivity and catalysis.
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Bai et al. (Mon,) studied this question.
www.synapsesocial.com/papers/69fd7cd4bfa21ec5bbf05a9a — DOI: https://doi.org/10.1080/23746149.2026.2666773
Jie Bai
Yi Zhu
Mei‐Ling Liu
Advances in Physics X
Yanshan University
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