Conformational Adaptation and Electronic Structure of 2H-Tetraphenylporphyrin on Ag(111) during Fe Metalation

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• 作者：Giovanni Di Santo ; Carla Castellarin-Cudia ; Mattia Fanetti ; Bidini Taleatu ; Patrizia Borghetti ; Luigi Sangaletti ; Luca Floreano ; Elena Magnano ; Federica Bondino ; Andrea Goldoni
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：March 17, 2011
• 年：2011
• 卷：115
• 期：10
• 页码：4155-4162
• 全文大小：933K
• 年卷期：v.115,no.10(March 17, 2011)
• ISSN：1932-7455

文摘

In-situ metalation of porphyrin molecules in ultrahigh vacuum (UHV) is of great interest for the characterization of pure species in a controlled environment. Here, we report the characterization of the electronic states and the molecules始 geometrical adaptation during the formation of pure 2H-5,10,15,20-tetraphenylporphyrin (2H-TPP) and Fe- tetraphenylporphyrin (Fe-TPP) layers on Ag(111) single crystal. Core level absorption spectra indicate the flat conformation of the monolayer suggesting an adatom hopping instead of a surface mediated dopant diffusion for the metalation process. Photoemission points out that the interaction between Fe d_z-states and Ag bands increases the monolayer metallic character already induced by the charge transfer from the substrate.