Adsorption of Azobenzene on Hexagonal Boron Nitride Nanomesh Supported by Rh(111).

ABSTRACT: Adsorption properties of azobenzene, the prototypical molecular switch, were investigated on a hexagonal boron nitride (h-BN) monolayer ("nanomesh") prepared on Rh(111). The h-BN layer was produced by decomposing borazine (B₃N₃H₆) at 1000-1050 K. Temperature-programmed desorption (TPD) studies revealed that azobenzene molecules adsorbed on the "wire" and "pore" regions desorb at slightly different temperatures. Angle-resolved high-resolution electron energy loss spectroscopy (HREELS) measurements demonstrated that the first molecular layer is characterized predominantly by an adsorption geometry with the molecular plane parallel to the surface. Scanning tunneling microscopy (STM) indicated a clear preference for adsorption in the pores, manifesting a templa

SUBMITTER: Szitas A 

PROVIDER: S-EPMC7493209 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature