Electron affinity levels of benzene and azabenzenes on Cu(111) and Au(110) revealed by inverse photoemission
✍ Scribed by K.-H. Frank; R. Dudde; E.E. Koch
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 462 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
We have studied the first two unoccupied molecular orbitals of benzene and s-triazine and the three lowest x * levels of pyridine and pyrazine adsorbed on Cu( 11 I ) and Au( I 10) using inverse photoemission. We have found a close one-to-one correspondence for the affinity levels in the gas phase and after adsorption onto the metallic substrates with the adsorbates exhibiting a uniform Coulomb relaxation of about I eV. While the lowest affinity orbitals of pyridine, pyrazine and s-triazine are observed between 2.2 and 3.7 eV above the Fermi level Er the ezU orbital of benzene has been found at 4.6 eV on Cu( 111) and at 4.8 eV on Au( 110).