The structure of PMDA-PDA polyimide monolayers adsorbed on gold surfaces

M. Keil, J. J. Paggel, Th Schedel-Niedrig, S. Yokoyama, H. Sotobayashi, A. M. Bradshaw

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4 Citations (Scopus)


Monolayers of the rod-like PMDA-PDA polyimide adsorbed on flame-annealed polycrystalline gold films have been studied with scanning tunnelling microscopy (STM) and X-ray absorption spectroscopy. The polyimide layer was deposited using the Langmuir-Blodgett preparation technique of Imai and Kakimoto. STM measurements in air showed that the polyimide chains were aligned along the 〈211〉 directions of the {111}-oriented single crystal regions of the surface. Although {111}-oriented areas were barely identifiable in the corresponding UHV experiments, aligned polymer chains were also observed over large areas of the surface. X-ray absorption measurements on the latter samples at the nitrogen K-edge showed a preferential orientation of the aromatic ring planes.

Original languageEnglish
Pages (from-to)377-381
Number of pages5
JournalApplied Surface Science
Issue number3
Publication statusPublished - Nov 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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