Major effect of electropolymerization solvent on morphology and electrochromic properties of PEDOT films

Elena Poverenov, Mao Li, Arkady Bitler, Michael Bendikov

Research output: Contribution to journalArticle

169 Citations (Scopus)

Abstract

Although significant efforts were devoted to improving the properties of conductive polymers, the effects of solvent and supporting electrolytes on the morphology and electrochromic features of electropolymerized materials have been scantly investigated. In this work, the effects of the polymerization conditions, such as the solvents and supporting electrolytes, on the morphological structure and electrochromic properties of PEDOT films were systematically studied. Surprisingly, we find a very significant solvent effect and a small supporting electrolyte effect. We show that morphological properties also strongly correlate with electrochromic properties. Films prepared in propylene carbonate have a smoother structure than those prepared in acetonitrile and this leads to superior electrochromic properties, such as an exceptionally high contrast ratio (71%), transparency in the doped state (80%), and coloration efficiency (193 cm2/C) for the films prepared in propylene carbonate. Significant differences between propylene carbonate and acetonitrile were explained by different solubilities of EDOT oligomers produced during initial stages of electropolymerization in these solvents.

Original languageEnglish
Pages (from-to)4019-4025
Number of pages7
JournalChemistry of Materials
Volume22
Issue number13
DOIs
Publication statusPublished - Jul 13 2010

Fingerprint

Electropolymerization
Electrolytes
Propylene
Carbonates
Acetonitrile
Oligomers
Transparency
Polymers
Solubility
Polymerization
propylene carbonate
acetonitrile

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Major effect of electropolymerization solvent on morphology and electrochromic properties of PEDOT films. / Poverenov, Elena; Li, Mao; Bitler, Arkady; Bendikov, Michael.

In: Chemistry of Materials, Vol. 22, No. 13, 13.07.2010, p. 4019-4025.

Research output: Contribution to journalArticle

@article{def649753ed04e829d2a05a274c83570,
title = "Major effect of electropolymerization solvent on morphology and electrochromic properties of PEDOT films",
abstract = "Although significant efforts were devoted to improving the properties of conductive polymers, the effects of solvent and supporting electrolytes on the morphology and electrochromic features of electropolymerized materials have been scantly investigated. In this work, the effects of the polymerization conditions, such as the solvents and supporting electrolytes, on the morphological structure and electrochromic properties of PEDOT films were systematically studied. Surprisingly, we find a very significant solvent effect and a small supporting electrolyte effect. We show that morphological properties also strongly correlate with electrochromic properties. Films prepared in propylene carbonate have a smoother structure than those prepared in acetonitrile and this leads to superior electrochromic properties, such as an exceptionally high contrast ratio (71{\%}), transparency in the doped state (80{\%}), and coloration efficiency (193 cm2/C) for the films prepared in propylene carbonate. Significant differences between propylene carbonate and acetonitrile were explained by different solubilities of EDOT oligomers produced during initial stages of electropolymerization in these solvents.",
author = "Elena Poverenov and Mao Li and Arkady Bitler and Michael Bendikov",
year = "2010",
month = "7",
day = "13",
doi = "10.1021/cm100561d",
language = "English",
volume = "22",
pages = "4019--4025",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "13",

}

TY - JOUR

T1 - Major effect of electropolymerization solvent on morphology and electrochromic properties of PEDOT films

AU - Poverenov, Elena

AU - Li, Mao

AU - Bitler, Arkady

AU - Bendikov, Michael

PY - 2010/7/13

Y1 - 2010/7/13

N2 - Although significant efforts were devoted to improving the properties of conductive polymers, the effects of solvent and supporting electrolytes on the morphology and electrochromic features of electropolymerized materials have been scantly investigated. In this work, the effects of the polymerization conditions, such as the solvents and supporting electrolytes, on the morphological structure and electrochromic properties of PEDOT films were systematically studied. Surprisingly, we find a very significant solvent effect and a small supporting electrolyte effect. We show that morphological properties also strongly correlate with electrochromic properties. Films prepared in propylene carbonate have a smoother structure than those prepared in acetonitrile and this leads to superior electrochromic properties, such as an exceptionally high contrast ratio (71%), transparency in the doped state (80%), and coloration efficiency (193 cm2/C) for the films prepared in propylene carbonate. Significant differences between propylene carbonate and acetonitrile were explained by different solubilities of EDOT oligomers produced during initial stages of electropolymerization in these solvents.

AB - Although significant efforts were devoted to improving the properties of conductive polymers, the effects of solvent and supporting electrolytes on the morphology and electrochromic features of electropolymerized materials have been scantly investigated. In this work, the effects of the polymerization conditions, such as the solvents and supporting electrolytes, on the morphological structure and electrochromic properties of PEDOT films were systematically studied. Surprisingly, we find a very significant solvent effect and a small supporting electrolyte effect. We show that morphological properties also strongly correlate with electrochromic properties. Films prepared in propylene carbonate have a smoother structure than those prepared in acetonitrile and this leads to superior electrochromic properties, such as an exceptionally high contrast ratio (71%), transparency in the doped state (80%), and coloration efficiency (193 cm2/C) for the films prepared in propylene carbonate. Significant differences between propylene carbonate and acetonitrile were explained by different solubilities of EDOT oligomers produced during initial stages of electropolymerization in these solvents.

UR - http://www.scopus.com/inward/record.url?scp=78651272102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78651272102&partnerID=8YFLogxK

U2 - 10.1021/cm100561d

DO - 10.1021/cm100561d

M3 - Article

VL - 22

SP - 4019

EP - 4025

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 13

ER -