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He, Shoushou; Okuno, Saya; Ng, Fay W.; Pang, Xueqi; Esposito, Daniel V.; Orchanian, Nicholas M.; Steigerwald, Michael L.; Roy, Xavier; Nuckolls, Colin
Journal of the American Chemical Society, 2023-Apr-06, Letnik: 145, Številka: 15Journal Article
We advance the chemistry of apical chlorine substitution in the 2D superatomic semiconductor Re6Se8Cl2 to build functional and atomically precise monolayers on the surface of the 2D superatomic Re6Se8 substrate. We create a functional monolayer by installing surface (2,2′-bipyridine)-4-sulfide (Sbpy) groups that chelate to catalytically active metal complexes. Through this reaction chemistry, we can create monolayers where we can control the distribution of catalytic sites. As a demonstration, we create highly active electrocatalysts for the oxygen evolution reaction using monolayers of cobalt(acetylacetonate)2bipyridine. We can further produce a series of catalysts by incorporating organic spacers in the functional monolayers. The structure and flexibility of the surface linkers can affect the catalytic performance, possibly by tuning the coupling between the functional monolayer and the superatomic substrate. These studies establish that the Re6Se8 sheet behaves as a chemical pegboard: a surface amenable to geometrically and chemically well-defined modification to yield functional monolayers, in this case catalytically active, that are atomically precise. This is an effective method to generate diverse families of functional nanomaterials.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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