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X-ray and electron beam modification of thiophene overlayers on TiO2(100)1 × 1 and 1 × 3 |
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| Authors: | H Raza P L Wincott G Thornton R Casanova and A Rodriguez |
| Institution: | a Interdisciplinary Research Centre in Surface Science and Chemistry Department, University of Manchester, Manchester, M13 9PL, UK b Universidad de los Andes, Departmento de Fisica, Laboratorio de Fisica de Superficies, Mérida-Estado, Mérida, Venezuela |
| Abstract: | The effects of electron and X-ray beams on thiophene overlayers on TiO2(100) 1 × 1 and 1 × 3 surfaces have been investigated using AES, UPS and XPS. Mg K X-rays were found to polymerise a thiophene multilayer condensed at 120 K. The evidence points to a substrate-secondary-electron mediated process. A 3 keV electron beam also modifies a condensed thiophene overlayer, probably by polymerisation. |
| Keywords: | Aromatics Auger electron spectroscopy Electron bombardment Low index single crystal surfaces Titanium oxide Visible and ultraviolet photoelectron spectroscopy X-ray photoelectron spectroscopy |
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