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THE ORIENTATION OF MERCAPTIDE ON CU(111) STUDIED BY X-RAY PHOTOELECTRON DIFFRACTION POLAR ANGLE SCANS
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UNSPECIFIED (1991) THE ORIENTATION OF MERCAPTIDE ON CU(111) STUDIED BY X-RAY PHOTOELECTRON DIFFRACTION POLAR ANGLE SCANS. In: 9TH INTERDISCIPLINARY SURFACE SCIENCE CONF ( ISSC-9 ), SOUTHAMPTON, ENGLAND, APR 22-24, 1991. Published in: JOURNAL OF PHYSICS-CONDENSED MATTER, 3 (Suppl. A). S111-S115. ISSN 0953-8984.
Research output not available from this repository, contact author.Abstract
The orientation of mercaptide (CH2S-), and the closely similar methoxy (CH3O-) 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 we 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.
| Item Type: | Conference Item (UNSPECIFIED) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | JOURNAL OF PHYSICS-CONDENSED MATTER | ||||
| Publisher: | IOP PUBLISHING LTD | ||||
| ISSN: | 0953-8984 | ||||
| Official Date: | November 1991 | ||||
| Dates: |
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| Volume: | 3 | ||||
| Number: | Suppl. A | ||||
| Number of Pages: | 5 | ||||
| Page Range: | S111-S115 | ||||
| Publication Status: | Published | ||||
| Title of Event: | 9TH INTERDISCIPLINARY SURFACE SCIENCE CONF ( ISSC-9 ) | ||||
| Location of Event: | SOUTHAMPTON, ENGLAND | ||||
| Date(s) of Event: | APR 22-24, 1991 |
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