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The Synthesis And Optoelectronic Properties Of Oxadiazole-Based Polymers

Published online by Cambridge University Press:  10 February 2011

X.-C. Li ,
A. Kraft ,
R. Cervini ,
G. C. W. Spencer ,
F. Cacialli ,
R. H. Friend ,
J. Gruener ,
A. B. Holmes ,
J. C. De Mello  and
S. C. Moratti
X.-C. Li
Affiliation:
University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 IEW U.K.
A. Kraft
Affiliation:
University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 IEW U.K.
R. Cervini
Affiliation:
University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 IEW U.K.
G. C. W. Spencer
Affiliation:
University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 IEW U.K.
F. Cacialli
Affiliation:
Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 OHE U.K.
R. H. Friend
Affiliation:
Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 OHE U.K.
J. Gruener
Affiliation:
Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 OHE U.K.
A. B. Holmes
Affiliation:
Melville Laboratory for Polymer Synthesis, University of Cambridge, Pembroke Street, Cambridge CB2 3RA U.K., abhi@cus.cam.ac.uk
J. C. De Mello
Affiliation:
Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 OHE U.K.
S. C. Moratti
Affiliation:
Melville Laboratory for Polymer Synthesis, University of Cambridge, Pembroke Street, Cambridge CB2 3RA U.K., abhi@cus.cam.ac.uk
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Abstract

New oxadiazole-based polymeric materials have been synthesized either as side chain copolymers with polymethacrylate or as main chain copolymers carrying solubilizing elements such as hexafluoropropylidene or meta-linked aromatic spacer units. Many of these materials exhibit blue luminescence in the solid state. The materials have been evaluated by photoluminescence and cyclic voltammetry studies, and as the electron transporting layer in a two-layer electroluminescent device with poly(p-phenylenevinylene) (PPV) as the emissive layer. The major conclusion is that these materials function by providing large heterojunction offsets at the Highest Occupied Molecular Orbital (HOMO) which block the passage of holes through the device.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 413: Symposium W – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials III , 1995 , 13
Copyright
Copyright © Materials Research Society 1996

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References

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