6533b86efe1ef96bd12cbc2c
RESEARCH PRODUCT
Electronic structure of adsorbed organic molecules
Mathias GetzlaffGerd Schönhensesubject
Vapor pressureChemistryAnalytical chemistryCyclohexanoneSurfaces and InterfacesElectronic structureCondensed Matter PhysicsSpectral lineSurfaces Coatings and FilmsCondensed Matter::Materials Sciencechemistry.chemical_compoundAdsorptionX-ray photoelectron spectroscopyPhysics::Atomic and Molecular ClustersMaterials ChemistryPhysical chemistryMoleculeGraphitePhysics::Chemical Physicsdescription
We report on investigations of chiral organic molecules in the gas phase and physisorbed on graphite. The measurements were carried out by means of angle-resolving VUV photoelectron spectroscopy. The emission from specific orbitals in oriented molecules can be forbidden because of dipole selection rules. Due to the lack of certain features in the spectra, it was possible to determine the adsorption geometry of cyclohexanone and camphor as being with their ring system parallel to the surface. By comparison of gas-phase and adsorbate spectra of ethyl benzene derivatives, adsorption could be proved to be molecular without decomposition. For amino acids on graphite, the occurrence of characteristic features gives direct evidence for molecular adsorption, despite of their very low vapor pressure in the gas phase.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-04-01 | Surface Science |