Porphyrin Supramolecular Arrays Formed by Weakly Interacting Meso-Functional Groups on Au(111)

Molecules. 2019 Sep 12;24(18):3326. doi: 10.3390/molecules24183326.

Abstract

The formation of a binary porphyrinic self-assembled system between meso-tetrakis(4-carboxyphenyl) porphyrin (TCPP) and meso-tetrakis(4-dimethyl amino) porphyrin (TDAP) was easily designed through non-covalent interactions in solution and adsorbed on a gold substrate. It was found that non-covalent interactions and geometrical conformations between porphyrins allow their self-assembly into a well-defined arrangement, which was confirmed by UV-Vis spectroscopy, electrochemistry, atomic force microscopy and density functional theory (DFT) studies.

Keywords: Au(111); non-covalent interactions; porphyrin; self-assembly.

MeSH terms

  • Density Functional Theory
  • Electrochemical Techniques
  • Gold / chemistry*
  • Microscopy, Atomic Force
  • Oxidation-Reduction
  • Porphyrins / chemistry*
  • Spectrophotometry, Ultraviolet
  • Static Electricity

Substances

  • Porphyrins
  • tetracarboxyphenylporphine
  • Gold