Metal−Organic Coordination Interactions in Fe−Terephthalic Acid Networks on Cu(100)
journal contributionposted on 13.02.2008 by Steven L. Tait, Yeliang Wang, Giovanni Costantini, Nian Lin, Alessandro Baraldi, Friedrich Esch, Luca Petaccia, Silvano Lizzit, Klaus Kern
Any type of content formally published in an academic journal, usually following a peer-review process.
Metal−organic coordination interactions are prime candidates for the formation of self-assembled, nanometer-scale periodic networks with room-temperature structural stability. We present X-ray photoelectron spectroscopy measurements of such networks at the Cu(100) surface which provide clear evidence for genuine metal−organic coordination. This is evident as binding energy shifts in the O 1s and Fe 3p photoelectron peaks, corresponding to O and Fe atoms involved in the coordination. Our results provide the first clear evidence for charge-transfer coordination in metal−organic networks at surfaces and demonstrate a well-defined oxidation state for the coordinated Fe ions.