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A New Approach to the Electrochemical Metallization of Organic Monolayers: Palladium Deposition onto a 4,4′‐Dithiodipyridine Self‐Assembled Monolayer
Author(s) -
Baunach T.,
Ivanova V.,
Kolb D. M.,
Boyen H.G.,
Ziemann P.,
Büttner M.,
Oelhafen P.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400409
Subject(s) - monolayer , palladium , x ray photoelectron spectroscopy , materials science , self assembled monolayer , electrochemistry , self assembly , deposition (geology) , adsorption , metal , nanotechnology , chemical engineering , electrode , organic chemistry , catalysis , chemistry , metallurgy , paleontology , sediment , biology , engineering
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 Pd II solution without potential control, causing Pd II to adsorb on the surface by forming a complex with the pyridine species. The Pd II ions are then electrochemically reduced to Pd 0 (see Figure). Angle‐resolved X‐ray photoelectron spectroscopy measurements unequivocally show that the reduced Pd resides on top of the SAM.