Graphene-like Boron-Carbon-Nitrogen Monolayers.
A strategy to synthesize a 2D graphenic but ternary monolayer containing atoms of carbon, nitrogen, and boron, h-BCN, is presented. The synthesis utilizes bis-BN cyclohexane, B2N2C2H12, as a precursor molecule and relies on thermally induced dehydrogenation of the precursor molecules and the formation of an epitaxial monolayer on Ir(111) through covalent bond formation. The lattice mismatch between the film and substrate causes a strain-driven periodic buckling of the film. The structure of the film and its corrugated morphology is discussed based on comprehensive data from molecular-resolved scanning tunneling microscopy imaging, X-ray photoelectron spectroscopy, low-energy electron diffraction, and density functional theory. First-principles calculations further predict a direct electronic band gap that is intermediate between gapless graphene and insulating h-BN.
Department of Physics & Astronomy, University of Nebraska , Lincoln, Nebraska 68588-0299, United States.
Sumit
S
Beniwal
Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University , Krakow, Poland 30-060.
James
J
Hooper
Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.
Daniel P
0000-0003-1507-2667
DP
Miller
Department of Physics & Astronomy, University of Nebraska , Lincoln, Nebraska 68588-0299, United States.
Paulo S
PS
Costa
Department of Chemistry, Boston College , Chestnut Hill, Massachusetts 02467-3860, United States.
Gang
G
Chen
Department of Chemistry, Boston College , Chestnut Hill, Massachusetts 02467-3860, United States.
Shih-Yuan
SY
Liu
Department of Physics & Astronomy, University of Nebraska , Lincoln, Nebraska 68588-0299, United States.
Peter A
0000-0002-2198-4710
PA
Dowben
Department of Chemistry, Tufts University , Medford, Massachusetts 02155, United States.
E Charles H
0000-0002-0224-2084
EC
Sykes
Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.
Eva
0000-0003-0738-867X
E
Zurek
Department of Physics & Astronomy, University of Nebraska , Lincoln, Nebraska 68588-0299, United States.|Physikalisches Institut, Universität Bayreuth , 95440 Bayreuth, Germany.
Axel
0000-0003-3671-5406
A
Enders
2D; 2D material; BCN; STM; bis-BN cyclohexane; boron nitride; graphene