Rhodium deposition onto a 4-mercaptopyridine SAM on Au(1 1 1)

The application of a recently developed method for the deposition of Pd and Pt on top of a SAM, has been successfully extended to Rh, thus proving the versatility of the new concept. Experimental evidence from cyclic voltammetry, in situ STM and ex situ X-ray photoemission spectroscopy is presented...

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Bibliographic Details
Published in:Electrochimica acta 2007-02, Vol.52 (8), p.2740-2745
Main Authors: Manolova, M., Kayser, M., Kolb, D.M., Boyen, H.-G., Ziemann, P., Mayer, D., Wirth, A.
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Electrochemistry
Electrodeposition
Exact sciences and technology
General and physical chemistry
Mercaptopyridine
Metallic coatings
Metallization
Metals. Metallurgy
Production techniques
Rhodium
Self-assembled monolayers
STM
Study of interfaces
Surface treatment
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Summary:The application of a recently developed method for the deposition of Pd and Pt on top of a SAM, has been successfully extended to Rh, thus proving the versatility of the new concept. Experimental evidence from cyclic voltammetry, in situ STM and ex situ X-ray photoemission spectroscopy is presented for the deposition of monoatomic high rhodium islands onto a 4-mercaptopyridine self-assembled monolayer on a Au(1 1 1) electrode. By repetitive complexation of the Rh ions to the ring-nitrogen and reduction in a Rh-ion free solution, an almost completely covered SAM is obtained. The consequences of making contacts for molecular electronics are briefly discussed.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2006.08.038