Convergent Fabrication of a Nanoporous Two-Dimensional Carbon Network   from an Aldol Condensation on Metal Surfaces
  We report a convergent surface polymerization reaction scheme on Au(111), based on a triple aldol condensation, yielding a carbon-rich, covalent nanoporous two-dimensional network. The reaction is not self-poisoning and proceeds up to a full surface coverage. The deposited precursor molecules 1,3,5-tri(4'-acetylphenyl) first form supramolecular assemblies that are converted to the porous covalent network upon heating. The formation and structure of the network and of the intermediate steps are studied with scanning tunneling microscopy, Raman spectroscopy and density functional theory. 
John Landers, Fr\'ed\'eric Ch\'erioux, Maurizio De Santis, Nedjma   Bendiab, Simon Lamare, Laurence Magaud, Johann Coraux
cond-mat.mtrl-sci