کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5397207 | 1505776 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photon stimulated ion desorption from intrinsically conducting polymer films based on polypyrrole doped with [Ni(dmit)2]2â
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: Photon stimulated ion desorption from intrinsically conducting polymer films based on polypyrrole doped with [Ni(dmit)2]2â Photon stimulated ion desorption from intrinsically conducting polymer films based on polypyrrole doped with [Ni(dmit)2]2â](/preview/png/5397207.png)
چکیده انگلیسی
Photon stimulated ion desorption and near-edge X-ray absorption fine structure studies have been performed on polypyrrole (PPy) films doped with [Ni(dmit)2]2â as counter ion. The experiments were taken at the Brazilian synchrotron light source (LNLS) operating in a single-bunch mode following sulphur K-shell photoexcitation and using time-of-flight mass spectrometry for ion analysis. At the sulphur 1s-edge ionic desorption of atomic and molecular fragments can be observed. Desorption ion yield curves have been determined as a function of the photon energy. The results showed that while the S+ ion yield reproduces the photoabsorption spectrum, the S2+ desorption is enhanced at higher energy excitations. These results are discussed in terms of the Auger stimulated ion desorption (ASID) mechanism, since these ions are not observed below the sulphur K-shell excitation region. Furthermore, for the other ionic species the indirect XESD (X-ray induced electron stimulated desorption) and the ASID processes seem to play an important role.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 155, Issues 1â3, March 2007, Pages 136-140
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 155, Issues 1â3, March 2007, Pages 136-140
نویسندگان
C. Arantes, A.M. Rocco, M.L.M. Rocco,