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Phenyl and Halophenyl Substituted Poly(p-phenylene vinylene)s for Capacitor Dielectrics

Published online by Cambridge University Press:  31 January 2011

Ross Johnson ,
Fenil M. Kholwadwala  and
Shawn M. Dirk
Ross Johnson
Affiliation:
rosjohn@sandia.gov
Fenil M. Kholwadwala
Affiliation:
kholwadwala@gmail.com, Sandia National Laboratories, Albuquerque, New Mexico, United States
Shawn M. Dirk
Affiliation:
smdirk@sandia.gov, Sandia National Laboratories, Albuquerque, New Mexico, United States
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Abstract

Conducting polymers have attracted attention in many areas of materials chemistry due to their tunability and wide range of applications. We are interested in utilizing the thermo-switchable properties of precursor PPV polymers to develop capacitor dielectrics that will fail at specific temperatures due to the material irreversibly converting from an insulating to a conducting state. Here, we report the synthesis and characterization of a new halophenyl substituted PPV polymer. We show that the precursor polymer has good dielectric properties over a range of temperatures, but will fail at high temperatures due to the polymer backbone conjugating. By utilizing thermo-switchable dielectrics in capacitors, the unintentional discharge of electricity in the event of a fire or overheating could be averted, providing a fundamental safety mechanism for high-voltage electronics.

Keywords

dielectricelectrical propertiespolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1197: Symposium D – Organic Materials for Printable Thin-Film Electronic Devices , 2009 , 1197-D07-43
Copyright
Copyright © Materials Research Society 2010

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