A 3:1 site-differentiated [4Fe-4S] cluster immobilized on a self-assembled monolayer
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Publication date
2008
Authors
van der Geer, E.P.L.
van den Brom, C.R.
Arfaoui, I.
Houssiau, L.
Rudolf, P.
van Koten, G.
Klein Gebbink, Robertus J.M.
Hessen, B.
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Abstract
A 3:1 site-differentiated [4Fe-4S] cluster is immobilized on a thiol-functionalized self-assembled monolayer (SAM) on Au(111) by thiol−thiolate exchange chemistry. Fe 2p signals observed by X-ray photoelectron spectroscopy support the presence of [4Fe-4S] clusters at the SAM surface; further evidence comes from the detection of n-Bu4N+ and cluster-derived species by secondary-ion mass spectrometry. The immobilizing interaction is sufficiently strong to allow the study of [4Fe-4S] clusters at solid−liquid interfaces.
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van der Geer, E P L, van den Brom, C R, Arfaoui, I, Houssiau, L, Rudolf, P, van Koten, G, Klein Gebbink, R J M & Hessen, B 2008, 'A 3:1 site-differentiated [4Fe-4S] cluster immobilized on a self-assembled monolayer', Journal of Physical Chemistry C, vol. 112, no. 44, pp. 17225-17230.