STM study of C60 overlayers on Pt(111) surfaces

Weakly Interacting Molecular Layer of Spinning C60 Molecules on TiO2 (110) Surfaces

“…It is important to note that it was impossible to obtain images of individual molecules on the surface terraces, similarly to other metallic surfaces (Au, Pt) and we did not succeed in resolving atomic molecular orbitals in the islands by imaging at small tunneling gaps 12–14. They appear to be nearly perfect spheres without intramolecular contrast.…”

“…It is important to note that it was impossible to obtain images of individual molecules on the surface terraces, similarly to other metallic surfaces (Au, Pt) and we did not succeed in resolving atomic molecular orbitals in the islands by imaging at small tunneling gaps. [12][13][14] They appear to be nearly perfect spheres without intramolecular contrast. These observations suggest a very high diffusion rate of the molecules on the surface, so that they can be exclusively observed when C 60 molecules coalesce into ordered islands.…”

First-principles study on the reconstruction induced by the adsorption of C60 on Pt(111)

“…1,5 The molecular orientation and the interfacial structures of C60/Pt(111) have been widely studied by low-energy electron diffraction (LEED), high resolution electron energy loss spectroscopy (HREELS), surface X-ray diffraction (XRD), UV photoelectron spectroscopy (UPS), and low-temperature scanning tunneling microscopy (STM). 1,[6][7][8][9][10][11][12][13] It was found that the C60 molecules bind covalently to the Pt(111) surface. Furthermore, an ordered O13 Â O13R13.91 or 2O3 Â 2O3R301 reconstruction has been observed by creating a surface vacancy lattice due to the chemical interactions between one monolayer of C60 molecules and a clean Pt(111) surface.…”

“…Furthermore, an ordered O13 Â O13R13.91 or 2O3 Â 2O3R301 reconstruction has been observed by creating a surface vacancy lattice due to the chemical interactions between one monolayer of C60 molecules and a clean Pt(111) surface. 1,[10][11][12][13] In the reconstructed structure, C60 molecules are located on top of the surface vacancies, forming covalent bonds between the 6 platinum surface atoms around the vacancies and the carbon atoms. 1,[10][11][12][13] Vacancy formation in Pt has been studied both experimentally and theoretically.…”

“…1,[10][11][12][13] In the reconstructed structure, C60 molecules are located on top of the surface vacancies, forming covalent bonds between the 6 platinum surface atoms around the vacancies and the carbon atoms. 1,[10][11][12][13] Vacancy formation in Pt has been studied both experimentally and theoretically. [14][15][16][17][18] The measured vacancy formation energies in Pt vary from 1.24 to 1.70 eV.…”