Chiral recognition at one-dimensional metal-organic coordination networks initiates the ordering of prochiral catalytic reagent methylacetoacetate on Au{111}

Langmuir. 2011 Mar 1;27(5):1788-95. doi: 10.1021/la1040097. Epub 2011 Jan 18.

Abstract

A scanning tunnelling microscopy investigation is reported of the adsorption of methylacetoacetate on Au{111} surfaces templated by the growth of 1-D chains of nickel pyroglutamate. The symmetry of the Au{111}-herringbone reconstruction and the chirality of the pyroglutamate species influence the preferred growth directions of pyroglutamate chains. The interaction of methylacetoacetate with the various chain types reveals details of the symmetry and conformation of the chains. In addition, the docking of methylacetoacetate initiates the growth of ordered domains of methylacetoacetate not observed on either Au{111} or Ni/Au{111} surfaces. The possibilities to utilize such chiral recognition and amplification effects in the design of enantioselective heterogeneous catalysts are discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetoacetates / chemistry*
  • Adsorption
  • Catalysis
  • Gold / chemistry*
  • Indicators and Reagents / chemistry
  • Models, Molecular
  • Molecular Conformation
  • Nickel / chemistry
  • Pyrrolidonecarboxylic Acid / chemistry
  • Stereoisomerism
  • Substrate Specificity
  • Surface Properties

Substances

  • Acetoacetates
  • Indicators and Reagents
  • Gold
  • Nickel
  • methyl acetoacetate
  • Pyrrolidonecarboxylic Acid