Insights into the Morphotropic Phase Boundary in Ferroelectric Polymers from the Molecular Perspective

Yang Liu; Bing Zhang; Aziguli Haibibu; Wenhan Xu; Zhubing Han; Wenchang Lu; J. Bernholc; Qing Wang

doi:10.1021/acs.jpcc.9b01220

Insights into the Morphotropic Phase Boundary in Ferroelectric Polymers from the Molecular Perspective

Yang Liu
, Bing Zhang
, Aziguli Haibibu
, Wenhan Xu
, Zhubing Han
, Wenchang Lu
, J. Bernholc
, Qing Wang

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Significantly enhanced electromechanical responses are inherent to piezoelectric materials at the morphotropic phase boundary (MPB). Here we reveal that conformational competition between the trans-planar and 3/1-helical phases of poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) occurs intramolecularly rather than intermolecularly to induce the formation of MPB. We attribute significantly enhanced piezoelectric properties observed near MPB to the polarization rotation between energetically degenerate trans-planar and 3/1-helical phases. Our results offer design principles to search for new MPB polymers from a molecular perspective.

Original language	English (US)
Pages (from-to)	8727-8730
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	123
Issue number	14
DOIs	https://doi.org/10.1021/acs.jpcc.9b01220
State	Published - Apr 11 2019

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/acs.jpcc.9b01220

Cite this

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title = "Insights into the Morphotropic Phase Boundary in Ferroelectric Polymers from the Molecular Perspective",

abstract = "Significantly enhanced electromechanical responses are inherent to piezoelectric materials at the morphotropic phase boundary (MPB). Here we reveal that conformational competition between the trans-planar and 3/1-helical phases of poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) occurs intramolecularly rather than intermolecularly to induce the formation of MPB. We attribute significantly enhanced piezoelectric properties observed near MPB to the polarization rotation between energetically degenerate trans-planar and 3/1-helical phases. Our results offer design principles to search for new MPB polymers from a molecular perspective.",

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AU - Liu, Yang

AU - Zhang, Bing

AU - Haibibu, Aziguli

AU - Xu, Wenhan

AU - Han, Zhubing

AU - Lu, Wenchang

AU - Bernholc, J.

AU - Wang, Qing

PY - 2019/4/11

Y1 - 2019/4/11

N2 - Significantly enhanced electromechanical responses are inherent to piezoelectric materials at the morphotropic phase boundary (MPB). Here we reveal that conformational competition between the trans-planar and 3/1-helical phases of poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) occurs intramolecularly rather than intermolecularly to induce the formation of MPB. We attribute significantly enhanced piezoelectric properties observed near MPB to the polarization rotation between energetically degenerate trans-planar and 3/1-helical phases. Our results offer design principles to search for new MPB polymers from a molecular perspective.

AB - Significantly enhanced electromechanical responses are inherent to piezoelectric materials at the morphotropic phase boundary (MPB). Here we reveal that conformational competition between the trans-planar and 3/1-helical phases of poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) occurs intramolecularly rather than intermolecularly to induce the formation of MPB. We attribute significantly enhanced piezoelectric properties observed near MPB to the polarization rotation between energetically degenerate trans-planar and 3/1-helical phases. Our results offer design principles to search for new MPB polymers from a molecular perspective.

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IS - 14

ER -

Insights into the Morphotropic Phase Boundary in Ferroelectric Polymers from the Molecular Perspective

Abstract

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