Nano Research

, Volume 4, Issue 4, pp 376–384

Formation of extended covalently bonded Ni porphyrin networks on the Au(111) surface

  • Sergey A. Krasnikov
  • Catherine M. Doyle
  • Natalia N. Sergeeva
  • Alexei B. Preobrajenski
  • Nikolay A. Vinogradov
  • Yulia N. Sergeeva
  • Alexei A. Zakharov
  • Mathias O. Senge
  • Attilio A. Cafolla
Research Article

DOI: 10.1007/s12274-010-0092-7

Cite this article as:
Krasnikov, S.A., Doyle, C.M., Sergeeva, N.N. et al. Nano Res. (2011) 4: 376. doi:10.1007/s12274-010-0092-7

Abstract

The growth and ordering of {5,10,15,20-tetrakis(4-bromophenyl)porphyrinato}nickel(II) (NiTBrPP) molecules on the Au(111) surface have been investigated using scanning tunnelling microscopy, X-ray absorption, core-level photoemission, and microbeam low-energy electron diffraction. When deposited onto the substrate at room temperature, the NiTBrPP forms a well-ordered close-packed molecular layer in which the molecules have a flat orientation with the porphyrin macrocycle plane lying parallel to the substrate. Annealing of the NiTBrPP layer on the Au(111) surface at 525 K leads to dissociation of bromine from the porphyrin followed by the formation of covalent bonds between the phenyl substituents of the porphyrin. This results in the formation of continuous covalently bonded porphyrin networks, which are stable up to 800 K and can be recovered after exposure to ambient conditions. By controlling the experimental conditions, a robust, extended porphyrin network can be prepared on the Au(111) surface that has many potential applications such as protective coatings, in sensing or as a host structure for molecules and clusters.

https://static-content.springer.com/image/art%3A10.1007%2Fs12274-010-0092-7/MediaObjects/12274_2010_92_Fig1_HTML.jpg

Keywords

Porphyrinscovalently bonded networksscanning tunnelling microscopyX-ray photoemission spectroscopynear-edge X-ray absorption fine structureAu(111)

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Sergey A. Krasnikov
    • 1
    • 2
  • Catherine M. Doyle
    • 1
  • Natalia N. Sergeeva
    • 3
  • Alexei B. Preobrajenski
    • 4
  • Nikolay A. Vinogradov
    • 4
  • Yulia N. Sergeeva
    • 3
  • Alexei A. Zakharov
    • 4
  • Mathias O. Senge
    • 3
  • Attilio A. Cafolla
    • 1
  1. 1.School of Physical SciencesDublin City UniversityGlasnevin, Dublin 9Ireland
  2. 2.Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), School of PhysicsTrinity College DublinDublin 2Ireland
  3. 3.SFI Tetrapyrrole Laboratory, School of ChemistryTrinity College DublinDublin 2Ireland
  4. 4.MAX-LabLund UniversityLundSweden