Direct Observation of Two Dimensional Electron Solvation at a Ag(111)/Alcohol Interface
Time resolved two photon photoemission was used to investigate the two dimensional electron solvation by a butanol monolayer on a Ag(111) surface. Several image potential state series were observed, indicating multiple local work functions that signify different possible pathways in the dynamic reorientation of the surface dipole. A time dependent kinetic energy of the image potential state electron was measured with two-photon photoemission. The energy relaxation is attributed to the rotation of the butanol molecular dipoles to solvate the electron. The electron solvation by molecular reorientation causes a dynamic reduction of the local work function. An energy relaxation of 0.25 eV was observed with a time constant of 530 fs.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Energy Research. Office of Basic Energy Sciences. Chemical Sciences Division; National Science Foundation (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 838952
- Report Number(s):
- LBNL-50004; R&D Project: 400501; TRN: US0501878
- Journal Information:
- Journal of Physical Chemistry B, Vol. 106, Issue 50; Other Information: Journal Publication Date: 12/19/2002; PBD: 27 Mar 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
Watching Electrons Transfer from Metals to Insulators using Two Photon Photoemission
Femtosecond studies of electron dynamics and structure at metal-molecular interfaces