Scanning Tunneling Microscopy in Surface Science

Sutter, Peter

doi:10.1007/978-0-387-49762-4_15

Cited by 3 publications

(2 citation statements)

References 160 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Measurements of the differential tunneling conductance dI / dV were used to assess the local density of states as a function of energy (see eq S5, Supporting Information). Figure e shows representative dI / dV spectra of the Cu(111) surface and of the copper oxide surface.…”

Section: Resultsmentioning

confidence: 99%

“…Scanning probe techniques allow the visualization of substrate and adsorbate electronic structure by monitoring the current from electron tunneling events to and from the system at specified energies (see eq S4, Supporting Information). Differential conductance ( dI / dV ) mapping in scanning tunneling spectroscopy (STS) permits in addition the evaluation of the local density of states (LDOS ∝ dI / dV ) with high spatial resolution, such that the spatial distribution of specific features in the electronic structure of adsorbed molecules can be assessed. That is, molecules and molecular clusters can be visualized according to, for example, the occupancy of electronic states at specified energies with respect to the Fermi energy.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrogen-Bonded Cyclic Water Clusters Nucleated on an Oxide Surface

Kronawitter

Riplinger

et al. 2014

J. Am. Chem. Soc.

Self Cite

View full text Add to dashboard Cite

We report the observation and molecular-scale scanning probe electronic structure (dI/dV) mapping of hydrogen-bonded cyclic water clusters nucleated on an oxide surface. The measurements are made on a new type of cyclic water cluster that is characterized by simultaneous and cooperative bonding interactions among molecules as well as with both metal and oxygen sites of an oxide surface. Density functional theory + U + D calculations confirm the stability of these clusters and are used to discuss other potential water-oxide bonding scenarios. The calculations show that the spatial distributions of electronic states in the system are similar in character to those of the lowest unoccupied molecular orbitals of hydrogen-bonded water molecules. On the partially oxidized Cu(111) investigated here, experiment and theory together suggest that Cu vacancies in the growing islands of cuprous oxide inhibit water adsorption in the centers of the islands (which have reached thermodynamic equilibrium). A stoichiometric, less stable cuprous oxide likely exists at island edges (the growth front) and selectively binds these water clusters.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hydrogen-Bonded Cyclic Water Clusters Nucleated on an Oxide Surface

Kronawitter

Riplinger

et al. 2014

J. Am. Chem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

Orbital-Resolved Imaging of the Adsorbed State of Pyridine on GaP(110) Identifies Sites Susceptible to Nucleophilic Attack

Kronawitter¹,

Lessio²,

Zahl

et al. 2015

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

Artificial photosynthesis by photoelectrocatalytic CO2 reduction is dependent, as is natural photosynthesis, on interfacial electron transfer to couple light excitation energy to reaction centers. For heterogeneous systems, in the context of frontier orbital theory artificial reaction centers are defined through the interactions of filled and empty orbitals within a few electronvolts of the Fermi energy of the adsorbate complex. Here we report a scanning tunneling microscopy (STM) and density functional theory investigation of the orbital-resolved adsorption state defining the dative bonding interaction between a III–V semiconductor surface [GaP(110)] and a N-containing heteroaromatic (pyridine). This system was selected for its relevance to photoelectrocatalysis utilizing heteroaromatic cocatalysts, which has been reported to yield highly selective CO2 reduction to fuels. By examining the distribution of unoccupied molecular orbitals, we show that STM images can be used to positively identify the sites on pyridine susceptible to nucleophilic attack, consistent with frontier orbital theory. This indicates that STM can be used to explore the local reaction centers of adsorbed ambidentate electrophiles and nucleophiles relevant to artificial photosynthesis, and more broadly to generate critical mechanistic information for various heterogeneous acid–base reactions

show abstract

Recent Advances in Bond-Resolved Scanning Tunneling Microscopy

Song

Peng

et al. 2021

Surf. Rev. Lett.

View full text Add to dashboard Cite

Recent advances in bond-resolved scanning tunneling microscopy (BRSTM) have demonstrated the tremendous potential of this characterization technique to attain an ultra-high spatial resolution at the level of a single chemical bond. Due to such a unique ability to visualize chemical bonds, BRSTM has been recognized as a valuable characterization tool in the rapidly developing field of on-surface chemistry. In this paper, we discuss the recent experimental advances in BRSTM imaging techniques and their applications in the characterization of a wide scope of functional nanostructures, including individual molecules, elusive nanographenes fabricated by means of surface-assisted synthetic strategies and extended supramolecular self-assemblies.

show abstract

Scanning Tunneling Microscopy in Surface Science

Cited by 3 publications

References 160 publications

Hydrogen-Bonded Cyclic Water Clusters Nucleated on an Oxide Surface

Hydrogen-Bonded Cyclic Water Clusters Nucleated on an Oxide Surface

Orbital-Resolved Imaging of the Adsorbed State of Pyridine on GaP(110) Identifies Sites Susceptible to Nucleophilic Attack

Recent Advances in Bond-Resolved Scanning Tunneling Microscopy

Contact Info

Product

Resources

About