Chiral assemblies of nickel lysinate via the corrosive adsorption of (S)-lysine on Ni/Au{111}

Karen Elisa Wilson, Christopher John Baddeley

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7 Citations (Scopus)
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Abstract

The adsorption of (S)-lysine onto submonolayer coverages of Ni on Au{111} was investigated by scanning tunnelling microscopy and reflection absorption infrared spectroscopy. Arrays of two-dimensional Ni nanoclusters were prepared on the Au{111} surface. The sticking probability of (S)-lysine was found to increase by an order of magnitude on Au surfaces templated by Ni compared to the clean Au surface. (S)-lysine corrodes Ni from the edges of clusters forming nickel lysinate complexes which self-assemble to form ordered molecular arrays. Below a threshold coverage, the Ni clusters are completely destroyed by (S)-lysine adsorption. Under these conditions, extensive restructuring of the Au steps is observed. The implications of our work for understanding the role of chiral modifiers in Ni catalysed enantioselective catalysis are discussed.
Original languageEnglish
Pages (from-to)102-107
Number of pages6
JournalSurface Science
Volume629
Early online date4 Apr 2014
DOIs
Publication statusPublished - Nov 2014

Keywords

  • Chirality
  • STM
  • Amino acid
  • Nickel
  • Gold
  • Bioinorganic

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