STM observation of a ruthenium dye adsorbed on a TiO(sub 2)(110) surface

Article Abstract:

Individual Ru(4,4'-dicarboxy-2,2'-bipyridine)(sub 2)(NCS)(sub 2) molecules, known as N3, adsorbed on a TiO2 surface are visualized with a scanning tunneling microscope (STM) operated in ultrahigh vacuum. The preferential adsorption of the N3 molecules at the steps is interpreted with the carboxyl groups readily approaching the poorly coordinated Ti atoms at the step edges and this work is the first step for a molecular-scale understanding of well-defined dye-sensitized TiO2 surfaces.

Ruthenium, Scanning tunneling microscopy, Carboxyl compounds

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5Probe microscope observation of platinum atoms deposited on the TiO2(110)-(1 x 1) surface

Article Abstract:

Noncontact atomic force microscope (NC-AFM) and a Kelvin probe force microscope (KPFM) are used to examine titanium dioxide (TiO2) (110) surfaces with Pt adatoms. The work function decrease is taken with an electric dipole moment directed toward the vacuum, as a result of electron transfer from the adatoms to the TiO2 substrate.

Platinum, Analysis, Electron transport, Atomic force microscopy, Structure

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