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Related Experiment Videos

Highly ordered thin films prepared with octabutoxy copper phthalocyanine complexes.

Kelly Stevenson1, Naoko Miyashita, Joanne Smieja

  • 1Department of Chemistry and Materials Science Program, Washington State University, Pullman, WA 99164-4630, USA. umazur@wsu.edu

Ultramicroscopy
|June 13, 2003
PubMed
Summary

Langmuir-Blodgett films of octabutoxyphthalocyanine derivatives were fabricated. These novel materials form stable monolayers with properties suitable for molecular electronics.

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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Nanotechnology

Background:

  • Phthalocyanines are versatile organic molecules with applications in various fields.
  • Octabutoxyphthalocyanines (CuPc(OBu)(8)) offer tunable electronic and optical properties.
  • Langmuir-Blodgett (LB) technique enables the formation of highly ordered thin films.

Purpose of the Study:

  • To fabricate and characterize Langmuir-Blodgett (LB) films of non-peripheral (nCuPc(OBu)(8)) and peripheral (pCuPc(OBu)(8)) octabutoxyphthalocyanines.
  • To investigate the structural and morphological properties of these LB films.
  • To assess the potential of these materials for molecular electronic devices.

Main Methods:

  • Fabrication of LB films using vertical dipping on hydrophilic substrates.

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  • Characterization using optical spectroscopy.
  • Characterization using scanning probe microscopy.

    • Main Results:

    • Both nCuPc(OBu)(8) and pCuPc(OBu)(8) formed smooth, uniform, dense, and highly stable LB monolayers.
    • The monolayers consisted of linear arrays of cofacial oligomers.
    • Long-range discotic assemblies were observed in both LB and spun-cast films.

    Conclusions:

    • Octabutoxyphthalocyanine derivatives can form highly ordered and stable thin films via the LB technique.
    • The observed discotic assemblies possess favorable physical and chemical properties.
    • These materials show promise for applications in molecular electronic devices.