کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9595699 | 1507981 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular orientation of 2-mercaptobenzoxazole adsorbed on Cu(1Â 0Â 0) surface
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The long range ordered p(2 Ã 2) self-assembled monolayer formed by dosing 2-mercaptobenzoxazole (MBO, C7H5NOS) on the Cu(1 0 0) surface at room temperature has been investigated by means of near edge X-ray adsorption fine structure (NEXAFS) technique at the sulphur K-edge. NEXAFS S-K-edge spectra have been recorded at different incident photon angles with respect to the Cu(1 0 0) surface, using linearly polarised synchrotron radiation. A clear spectral feature has been observed close to the absorption edge, with higher intensity at grazing incidence, assigned to the Ï*(S-C) resonance, corresponding to the transition from the S 1s core level to the Ï*(S-C) antibonding molecular state. The angular dependence of the Ï*(S-C) resonance intensity clearly indicates that the S-C axis is nearly perpendicular to the surface (13° ± 13°), confirming the major role of S in bonding to the surface, and the influence of the Ï-Ï interaction between the molecules in driving the almost upright position at saturation coverage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 578, Issues 1â3, 10 March 2005, Pages 136-141
Journal: Surface Science - Volume 578, Issues 1â3, 10 March 2005, Pages 136-141
نویسندگان
F. Bussolotti, S. D'Addato, F. Allegretti, V. Dhanak, Carlo Mariani,