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Side Chain Influence on Main Chain Orientation of PPV-Type Oligomers

Published online by Cambridge University Press:  21 March 2011

Ruth Müllner
Affiliation:
Institute for Chemistry and Technology of Organic Materials, TU-Graz, Stremayrg. 16/I, A-8010 Graz
Laurence Noirez
Affiliation:
Laboratoire Léon Brillouin, Ce-Saclay, F-91191 Gif-sur-Yvette Cedex
Egbert Zojer
Affiliation:
Institute for Solid State Physics, TU-Graz, Petersgasse 12, A-8010 Graz
Franz Stelzer
Affiliation:
Institute for Chemistry and Technology of Organic Materials, TU-Graz, Stremayrg. 16/I, A-8010 Graz
Günther Leising
Affiliation:
Institute for Solid State Physics, TU-Graz, Petersgasse 12, A-8010 Graz
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Abstract

Oligo (p-phenylene vinylene)s OPV were synthesized having cyanobiphenyloxy-groups bonded to the vinylene double bonds via alkylene spacers. A Pd(0)-reaction was used to synthesize the oligomers starting with the dibromo-substituted benzene and the alkenyloxy-biphenyl-nitrile. The orientation of the mesogens by a magnetic field and their influence on the orientation of the main chain was investigated by means of neutron diffraction ND. Data on the photophysics of the oligomers were gained using several spectroscopic methods such as UV/VIS, polarized optical microscopy POM, SEC, 1H-NMR, FT-IR.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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References

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