Electrochemical stability of self-assembled monolayers on nanoporous Au
Literature Information
Masataka Hakamada, Masaki Takahashi, Toshiyuki Furukawa, Kazuki Tajima, Kazuki Yoshimura, Yasumasa Chino, Mamoru Mabuchi
Desorption of thiolate self-assembled monolayers (SAMs) seriously limits the fabrication of thiol-based devices. Here we demonstrate that nanoporous Au produced by dealloying Au–Ag alloys exhibits high electrochemical stability against thiolate desorption. Nanoporous Au has many defective sites, lattice strain and residual Ag on the ligament surface. First-principles calculations indicate that these surface aspects increase the binding energy between a SAM and the surface of nanoporous Au.
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