FisMat2017 - Submission - View

Abstract's title: Synthesis of a novel boronic 2D material on Au(111)
Submitting author: Matus Stredansky
Affiliation: Department of Physics, University of Trieste
Affiliation Address: via A. Valerio 2, 34127, Trieste, Italy
Country: Italy
Oral presentation/Poster (Author's request): Poster
Other authors and affiliations: Tommaso Fontanot (Department of Physics, University of Trieste, via A. Valerio 2, 34127, Trieste, Italy), Luca Floreano (CNR-IOM Laboratorio Nazionale TASC, Basovizza SS-14, km 163.5, 34012 Trieste, Italy), Alberto Morgante(1: Department of Physics, University of Trieste, via A. Valerio 2, 34127, Trieste, Italy; 2: CNR-IOM Laboratorio Nazionale TASC, Basovizza SS-14, km 163.5, 34012 Trieste, Italy), Albano Cossaro (CNR-IOM Laboratorio Nazionale TASC, Basovizza SS-14, km 163.5, 34012 Trieste, Italy)
Abstract

We have studied the assembly process of a film of small boronic molecules (tetrahydroxy diborane) on Au(111) and Cu(111) surfaces under ultra high vacuum condition. By means of X-ray photoelectron spectroscopy (XPS) we found that a condensation reaction takes place, leading to the formation of extended, covalently bounded architectures. On Au(111), the angular resolved ultraviolet photoelectron spectroscopy (ARUPS), reveals the presence of a dispersion of valence band peaks of the boronic assembly, indicating a possible and promising employment of the system as  electrode in electronic devices. The morphology of the boronic-gold hybrid interface has been investigated by means of near edge X-ray absorption fine structure (NEXAFS), that indicates a flat adsorption geometry for the boroxine rings of the film. On the contrary, the film grown on Cu(111) shows no dispersion, possibly due to a stronger boroxine-metal interaction.