Colossal Dielectric and Electromechanical Responses in Self Assembled Polymeric Nanocomposites

Authors

Cheng Huang, Pennsylvania State University, University Park, Pennsylvania
Q. M. Zhang, Pennsylvania State University, University Park, Pennsylvania
Jiang Yu Li, University of Nebraska - Lincoln
Manese Rabeony, Rutgers University, Piscataway, New Jersey

Date of this Version

2005

Comments

Published in APPLIED PHYSICS LETTERS 87, 182901 (2005). Copyright © 2005 American Institute of Physics. Used by permission.

Abstract

An electroactive polymer nanocomposite, in which high dielectric constant copper phthalocyanine oligomer (o-CuPc) nanoparticles are incorporated into the block polyurethane (PU) matrix by the combination of “top down” and “bottom up” approaches, was realized. Such an approach enables the nanocomposite to exhibit colossal dielectric and electromechanical responses with very low volume fraction of the high dielectric constant o-CuPc nanofillers (~3.5%) in the composite. In contrast, a simple blend of o-CuPc and PU composite with much higher o-CuPc content (~16% of o-CuPc) shows much lower dielectric and electromechanical responses.