Self-assembled functional organic monolayers on oxide-free copper |
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Authors: | Campos Mabel A Caipa Trilling Anke K Yang Menglong Giesbers Marcel Beekwilder Jules Paulusse Jos M J Zuilhof Han |
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Institution: | Laboratory of Organic Chemistry, Wageningen University and Research Center, Dreijenplein 8, 6703 HB, Wageningen, The Netherlands. |
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Abstract: | The preparation and characterization of self-assembled monolayers on copper with n-alkyl and functional thiols was investigated. Well-ordered monolayers were obtained, while the copper remained oxide-free. Direct attachment of N-succinimidyl mercaptoundecanoate (NHS-MUA) onto the copper surface allowed for the successful attachment of biomolecules, such as β-d-glucosamine, the tripeptide glutathione, and biotin. Notably, the copper surfaces remained oxide-free even after two reaction steps. All monolayers were characterized by static water contact angle measurements, X-ray photoelectron spectroscopy, and infrared reflection absorption spectroscopy. In addition, the biotinylated copper surfaces were employed in the immobilization of biomolecules such as streptavidin. |
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