Abstract
The formation of highly oriented cluster arrays by chemical deposition. of platinum onto a regular 2D protein template is studied. The crystalline bacterial surface layer (S layer) of Sporosarcina ureae exhibiting a p4 symmetry with a lattice spacing of 13.2 nm is used as the protein template. Cluster deposition onto the S layer is achieved by chemical reduction of a platinum salt. The growth kinetics of the clusters has been examined by UV-VIS spectrometry. Transmission electron microscopy reveals the formation of well separated metal clusters with an average diameter of 1.9 ± 0.6 nm. The lateral cluster arrangement is defined by the underlying protein crystal. We observe 7 cluster sites per unit cell corresponding to a density of 4 × 1012 cm −2. They are located in the nano-sized pores and gaps of the crystalline S layer.
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Mertig, M., Kirsch, R., Pompe, W., Engelhardt, H. (1999). Fabrication of highly oriented nanocluster arrays by biomolecular templating. In: Châtelain, A., Bonard, JM. (eds) The European Physical Journal D. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-88188-6_10
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DOI: https://doi.org/10.1007/978-3-642-88188-6_10
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