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Synthesis of borophenes: Anisotropic, two-dimensional boron polymorphs.

ABSTRACT: At the atomic-cluster scale, pure boron is markedly similar to carbon, forming simple planar molecules and cage-like fullerenes. Theoretical studies predict that two-dimensional (2D) boron sheets will adopt an atomic configuration similar to that of boron atomic clusters. We synthesized atomically thin, crystalline 2D boron sheets (i.e., borophene) on silver surfaces under ultrahigh-vacuum conditions. Atomic-scale characterization, supported by theoretical calculations, revealed structures reminiscent of fused boron clusters with multiple scales of anisotropic, out-of-plane buckling. Unlike bulk boron allotropes, borophene shows metallic characteristics that are consistent with predictions of a highly anisotropic, 2D metal.

SUBMITTER: Mannix AJ

PROVIDER: S-EPMC4922135 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

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Synthesis of borophenes: Anisotropic, two-dimensional boron polymorphs.

Mannix Andrew J AJ Zhou Xiang-Feng XF Kiraly Brian B Wood Joshua D JD Alducin Diego D Myers Benjamin D BD Liu Xiaolong X Fisher Brandon L BL Santiago Ulises U Guest Jeffrey R JR Yacaman Miguel Jose MJ Ponce Arturo A Oganov Artem R AR Hersam Mark C MC Guisinger Nathan P NP

Science (New York, N.Y.) 20151201 6267

At the atomic-cluster scale, pure boron is markedly similar to carbon, forming simple planar molecules and cage-like fullerenes. Theoretical studies predict that two-dimensional (2D) boron sheets will adopt an atomic configuration similar to that of boron atomic clusters. We synthesized atomically thin, crystalline 2D boron sheets (i.e., borophene) on silver surfaces under ultrahigh-vacuum conditions. Atomic-scale characterization, supported by theoretical calculations, revealed structures remin ...[more]

PMID: 26680195

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