Identification of isomers in the gas phase and as adsorbates by near-edge X-ray absorption fine structure spectroscopy: Cis- and trans-stilbene

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• 作者：Ralph Pü ; ttner^a ; Philipp Schmidt-Weber^b ; ¹ ; Thorsten Kampen^c ; Christine Kolczewski^d ; Klaus Hermann^b ; Karsten Horn^b ; ^{horn@fhi-berlin.mpg.de}
• 刊名：Journal of Electron Spectroscopy and Related Phenomena
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：215
• 期：Complete
• 页码：16-21
• 全文大小：850 K
• 卷排序：215

文摘

NEXAFS spectra of the cis- and trans-isomer of stilbene reveal distinct differences by which the isomers can be distinguished. DFT calculations using the transition potential approach assign specific transitions that are different in the two isomers. On Si(100), these differences in NEXAFS are also observed, suggesting that their conformations survive in the bonding situation. NEXAFS is thus shown to be a sensitive tool to distinguish isomers in adsorbed species.