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  Photoreactive thin films of azobenzene-derivatized poly(amic acid) and poly(imide) Langmuir-Blodgett-Kuhn multilayer assemblies

Zong, Y., Hees, U., Knoll, W., & Rühe, J. (2002). Photoreactive thin films of azobenzene-derivatized poly(amic acid) and poly(imide) Langmuir-Blodgett-Kuhn multilayer assemblies. Journal of Nonlinear Optical Physics & Materials, 11(4), 367-389. doi:10.1142/S0218863502001127.

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 Creators:
Zong, Y.1, Author           
Hees, U.1, Author           
Knoll, Wolfgang1, Author           
Rühe, Jürgen2, Author           
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              
2Univ Freiburg, Dept Microsyst, Freiburg, Germany, ou_persistent22              

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Free keywords: poly(amic acid); poly(imide); Langmuir/Blodgett/Kuhn multilayer assemblies; liquid crystal alignment; command layer; surface plasmon optics; waveguide spectroscopy
 Abstract: Various poly(amic acid)s with azobenzene-chromophore sidegroups have, been synthesized and structurally and functionally characterized. Their amphiphilic properties allowed us to prepare stable monomolecular layers at the water/air interface of a Langmuir trough, and to transfer these highly organized monolayers to solid supports via the Langmuir-Blodgett-Kuhn deposition protocol. The resulting multilayer assemblies were investigated by surface plasmon- and waveguide-optical techniques, by X-ray reflectometry, and by UV-vis and IR spectroscopies. Thermal imidization of the assemblies resulted in functional poly(imide) multilayers that still could undergo photoisomerization reactions in their azobenzene sidegroups. The kinetic parameters of this trans-cis and cis-trans isomerization, respectively, as well as, the resulting control of the alignment of a liquid crystal in contact to these "command layers" were evaluated.

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Language(s): eng - English
 Dates: 2002-12
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28402
ISI: 000181219500004
DOI: 10.1142/S0218863502001127
 Degree: -

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Title: Journal of Nonlinear Optical Physics & Materials
  Other : J. Nonlinear Opt. Phys. Mater.
Source Genre: Journal
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Publ. Info: Singapore : World Scientific
Pages: - Volume / Issue: 11 (4) Sequence Number: - Start / End Page: 367 - 389 Identifier: ISSN: 0218-8635
CoNE: https://pure.mpg.de/cone/journals/resource/954928548276