TY - JOUR
T1 - Structural origin of anisotropic transport in electrically conducting dichloroacetic acid-treated polymers
AU - Mativetsky, Jeffrey M.
AU - Tarver, Jacob
AU - Yang, Xiaofang
AU - Koel, Bruce E.
AU - Loo, Yueh Lin
N1 - Funding Information:
This work was supported by the Beckman Foundation, an NSF CAREER Award (DMR0735148), the Camille and Henry Dreyfus Postdoctoral Program in Environmental Chemistry, and a NIST-ARRA Measurement Science and Engineering Fellowship to JT. AFM was performed at Princeton’s Imaging and Analysis Center, part of the Center for Complex Materials, an NSF MRSEC Center.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2014/2
Y1 - 2014/2
N2 - The post-deposition treatment of water-processable, polymer acid-templated conducting polymers with dichloroacetic acid has recently been shown to enhance in-plane conductivity by orders of magnitude. Here, we evaluate both the in-plane and out-of-plane conductivities of dichloroacetic acid-treated conducting polymer films, and track the accompanying evolution of film structure and composition. Films of poly(ethylene dioxythiophene)-poly(styrene sulfonic acid), PEDOT-PSS, exhibit improvements in both in-plane and out-of-plane conductivities following dichloroacetic acid treatment, associated with the removal of excess PSS from the surface. Conversely, polyaniline-poly(2- acrylamido-2-methyl-1-propanesulfonic acid), PANI-PAAMPSA, films are characterized by high anisotropies in conductivity, with the in-plane conductivity being orders of magnitude higher following DCA treatment and the out-of-plane conductivity substantially lower after the same treatment. Our experiments indicate that this unusual electrical anisotropy results from a vertically inhomogeneous composition profile.
AB - The post-deposition treatment of water-processable, polymer acid-templated conducting polymers with dichloroacetic acid has recently been shown to enhance in-plane conductivity by orders of magnitude. Here, we evaluate both the in-plane and out-of-plane conductivities of dichloroacetic acid-treated conducting polymer films, and track the accompanying evolution of film structure and composition. Films of poly(ethylene dioxythiophene)-poly(styrene sulfonic acid), PEDOT-PSS, exhibit improvements in both in-plane and out-of-plane conductivities following dichloroacetic acid treatment, associated with the removal of excess PSS from the surface. Conversely, polyaniline-poly(2- acrylamido-2-methyl-1-propanesulfonic acid), PANI-PAAMPSA, films are characterized by high anisotropies in conductivity, with the in-plane conductivity being orders of magnitude higher following DCA treatment and the out-of-plane conductivity substantially lower after the same treatment. Our experiments indicate that this unusual electrical anisotropy results from a vertically inhomogeneous composition profile.
KW - Anisotropy
KW - Conducting polymer
KW - Electrical conductivity
KW - Poly(ethylene dioxythiophene)
KW - Polyaniline
KW - Structure-function relationships
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U2 - 10.1016/j.orgel.2013.12.019
DO - 10.1016/j.orgel.2013.12.019
M3 - Article
AN - SCOPUS:84892972591
SN - 1566-1199
VL - 15
SP - 631
EP - 638
JO - Organic Electronics
JF - Organic Electronics
IS - 2
ER -