Advanced Materials

A New Approach to the Electrochemical Metallization of Organic Monolayers: Palladium Deposition onto a 4,4′-Dithiodipyridine Self-Assembled Monolayer


  • Financial support by the Deutsche Forschungsgemeinschaft (DFG) within SFB 569, the Swiss National Science Foundation (NF), and the Swiss National Center of Competence in Research (NCCR) “Nanoscale Science” is gratefully acknowledged.


Depositing metal layers onto a self-assembled monolayer (SAM) is achieved using a new technique. Au(111) bearing a 4,4′-dithiodipyridine SAM is immersed into a PdII solution without potential control, causing PdII to adsorb on the surface by forming a complex with the pyridine species. The PdII ions are then electrochemically reduced to Pd0 (see Figure). Angle-resolved X-ray photoelectron spectroscopy measurements unequivocally show that the reduced Pd resides on top of the SAM.

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