| Автор | M C Asensio |
| Автор | A V de Carvalho |
| Автор | D P Woodruff |
| Дата выпуска | 1991-11-01 |
| dc.description | The orientation of mercaptide (CH<sub>2</sub>S-), and the closely similar methoxy (CH<sub>3</sub>O-) species on Cu single-crystal surfaces, has been the subject of some controversy. Some near-edge X-ray absorption fine structure results indicate substantially tilted C-S or C-O molecular axes relative to the surface normal, but reflection-adsorption infrared spectroscopy of methoxy on Cu(111), scanned-energy mode photoelectron diffraction of methoxy on Cu(100), and S K-edge surface extended X-ray absorption fine structure of mercaptide on Cu(111) all indicate perpendicular molecular orientations. A technique that provides particularly clear information on molecular orientations is polar angle scanned X-ray photoelectron diffraction, and the authors have applied this method to a study of the molecular orientation of mercaptide on Cu(111). The results show clearly that the mercaptide molecular axis is oriented perpendicular to the surface, a result which is found to be true over a wide range of surface coverages. The origins of the discrepancies between the various techniques are discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The orientation of mercaptide on Cu(111) studied by X-ray photoelectron diffraction polar angle scans |
| Тип | paper |
| DOI | 10.1088/0953-8984/3/S/018 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 3 |
| Первая страница | S111 |
| Последняя страница | S115 |
| Аффилиация | M C Asensio; Dept. of Phys., Warwick Univ., Coventry, UK |
| Аффилиация | A V de Carvalho; Dept. of Phys., Warwick Univ., Coventry, UK |
| Аффилиация | D P Woodruff; Dept. of Phys., Warwick Univ., Coventry, UK |
| Выпуск | S |
