Electronic properties of the boroxine-gold interface: evidence of ultra-fast charge delocalization.

ABSTRACT: We performed a combined experimental and theoretical study of the assembly of phenylboronic acid on the Au(111) surface, which is found to lead to the formation of triphenylboroxines by spontaneous condensation of trimers of molecules. The interface between the boroxine group and the gold surface has been characterized in terms of its electronic properties, revealing the existence of an ultra-fast charge delocalization channel in the proximity of the oxygen atoms of the heterocyclic group. More specifically, the DFT calculations show the presence of an unoccupied electronic state localized on both the oxygen atoms of the adsorbed triphenylboroxine and the gold atoms of the topmost layer. By means of resonant Auger electron spectroscopy, we demonstrate that this interface state represents a

SUBMITTER: Toffoli D 

PROVIDER: S-EPMC5436552 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature