Linear Dichroism in the NEXAFS Spectra of n-Alkane Crystalline Polymorphs
Date
2019-04
Authors
Perera, Sahan
Wang, Jian
Urquhart, Stephen
Journal Title
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Publisher
Elsevier
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Article
Degree Level
Abstract
Linear Dichroism in Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy is a
useful tool for studying molecular orientation and for clarifying spectroscopic assignments. n-
Alkane molecules can form single crystals with different polymorphs; orthorhombic and
monoclinic in the case of even chain lengths between n-C28H58 and n-C40H82. These polymorphs
exhibit different linear dichroism in their NEXAFS spectra; in particular a backbone-oriented
transition contributes to the low-energy “C-H” band in the monoclinic polymorph.
Description
postprint
Keywords
NEXAFS, n-alkanes, linear dichroism
Citation
Sahan D. Perera, Jian Wang and Stephen G. Urquhart, 2018, Linear Dichroism in the NEXAFS Spectra of N-Alkane Crystalline Polymorphs, J. Electron Spectrosc. and Rel. Phen., 232, 5-10. DOI: 10.1016/j.elspec.2018.12.004
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Citation
Sahan D. Perera, Jian Wang and Stephen G. Urquhart, 2018, Linear Dichroism in the NEXAFS Spectra of N-Alkane Crystalline Polymorphs, J. Electron Spectrosc. and Rel. Phen., 232, 5-10. DOI: 10.1016/j.elspec.2018.12.004
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DOI
10.1016/j.elspec.2018.12.004