Unexpected interaction between PEDOT and phosphonium ionic liquids

Vanessa Armel, Jonathan Rivnay, George Malliaras, Bjorn Winther Jensen

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In-situ-polymerized films of poly(3,4-ethylenedioxythiophene) (PEDOT) are known to be relatively ordered materials and maintain this order under changing chemical and electrochemical conditions. It is therefore surprising that certain ionic liquids (ILs) were found to interact with PEDOT and thereby to a large extent disrupt the ordered structure. The current work demonstrates the expansion of the interlayer distance (d100) of PEDOT and the composite of PEDOT with poly(ethyleneglycol) (PEDOT(PTS):PEG) in the presence of IL mixtures containing triisobutylmethylphosphonium tosylate (P 1444PTS) and water. In presence of the mixtures, the PEDOT(PTS):PEG film expands up to ∼100% while the PEDOT(PTS) film expanded ∼50%. The expansion did not increase the electrical resistance but increased the absorption in the π-π* range, which can be explained by increased shielding of the PEDOT chains by the IL. The incorporation of P 1444PTS increased the capacitance by 350%, compared to the theoretical capacitance of PEDOT(PTS), due to the formation of additional double-layer capacitance.

Original languageEnglish
Pages (from-to)11309-11313
Number of pages5
JournalJournal of the American Chemical Society
Volume135
Issue number30
DOIs
Publication statusPublished - 2013 Jul 31
Externally publishedYes

Fingerprint

Ionic Liquids
Ionic liquids
Capacitance
Polyethylene glycols
Acoustic impedance
Shielding
Composite materials
poly(3,4-ethylene dioxythiophene)
Water
Electric Impedance

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Unexpected interaction between PEDOT and phosphonium ionic liquids. / Armel, Vanessa; Rivnay, Jonathan; Malliaras, George; Winther Jensen, Bjorn.

In: Journal of the American Chemical Society, Vol. 135, No. 30, 31.07.2013, p. 11309-11313.

Research output: Contribution to journalArticle

Armel, Vanessa ; Rivnay, Jonathan ; Malliaras, George ; Winther Jensen, Bjorn. / Unexpected interaction between PEDOT and phosphonium ionic liquids. In: Journal of the American Chemical Society. 2013 ; Vol. 135, No. 30. pp. 11309-11313.
@article{a8f8290cd36e43928aaada7e4480a073,
title = "Unexpected interaction between PEDOT and phosphonium ionic liquids",
abstract = "In-situ-polymerized films of poly(3,4-ethylenedioxythiophene) (PEDOT) are known to be relatively ordered materials and maintain this order under changing chemical and electrochemical conditions. It is therefore surprising that certain ionic liquids (ILs) were found to interact with PEDOT and thereby to a large extent disrupt the ordered structure. The current work demonstrates the expansion of the interlayer distance (d100) of PEDOT and the composite of PEDOT with poly(ethyleneglycol) (PEDOT(PTS):PEG) in the presence of IL mixtures containing triisobutylmethylphosphonium tosylate (P 1444PTS) and water. In presence of the mixtures, the PEDOT(PTS):PEG film expands up to ∼100{\%} while the PEDOT(PTS) film expanded ∼50{\%}. The expansion did not increase the electrical resistance but increased the absorption in the π-π* range, which can be explained by increased shielding of the PEDOT chains by the IL. The incorporation of P 1444PTS increased the capacitance by 350{\%}, compared to the theoretical capacitance of PEDOT(PTS), due to the formation of additional double-layer capacitance.",
author = "Vanessa Armel and Jonathan Rivnay and George Malliaras and {Winther Jensen}, Bjorn",
year = "2013",
month = "7",
day = "31",
doi = "10.1021/ja405032c",
language = "English",
volume = "135",
pages = "11309--11313",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "30",

}

TY - JOUR

T1 - Unexpected interaction between PEDOT and phosphonium ionic liquids

AU - Armel, Vanessa

AU - Rivnay, Jonathan

AU - Malliaras, George

AU - Winther Jensen, Bjorn

PY - 2013/7/31

Y1 - 2013/7/31

N2 - In-situ-polymerized films of poly(3,4-ethylenedioxythiophene) (PEDOT) are known to be relatively ordered materials and maintain this order under changing chemical and electrochemical conditions. It is therefore surprising that certain ionic liquids (ILs) were found to interact with PEDOT and thereby to a large extent disrupt the ordered structure. The current work demonstrates the expansion of the interlayer distance (d100) of PEDOT and the composite of PEDOT with poly(ethyleneglycol) (PEDOT(PTS):PEG) in the presence of IL mixtures containing triisobutylmethylphosphonium tosylate (P 1444PTS) and water. In presence of the mixtures, the PEDOT(PTS):PEG film expands up to ∼100% while the PEDOT(PTS) film expanded ∼50%. The expansion did not increase the electrical resistance but increased the absorption in the π-π* range, which can be explained by increased shielding of the PEDOT chains by the IL. The incorporation of P 1444PTS increased the capacitance by 350%, compared to the theoretical capacitance of PEDOT(PTS), due to the formation of additional double-layer capacitance.

AB - In-situ-polymerized films of poly(3,4-ethylenedioxythiophene) (PEDOT) are known to be relatively ordered materials and maintain this order under changing chemical and electrochemical conditions. It is therefore surprising that certain ionic liquids (ILs) were found to interact with PEDOT and thereby to a large extent disrupt the ordered structure. The current work demonstrates the expansion of the interlayer distance (d100) of PEDOT and the composite of PEDOT with poly(ethyleneglycol) (PEDOT(PTS):PEG) in the presence of IL mixtures containing triisobutylmethylphosphonium tosylate (P 1444PTS) and water. In presence of the mixtures, the PEDOT(PTS):PEG film expands up to ∼100% while the PEDOT(PTS) film expanded ∼50%. The expansion did not increase the electrical resistance but increased the absorption in the π-π* range, which can be explained by increased shielding of the PEDOT chains by the IL. The incorporation of P 1444PTS increased the capacitance by 350%, compared to the theoretical capacitance of PEDOT(PTS), due to the formation of additional double-layer capacitance.

UR - http://www.scopus.com/inward/record.url?scp=84881031665&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881031665&partnerID=8YFLogxK

U2 - 10.1021/ja405032c

DO - 10.1021/ja405032c

M3 - Article

VL - 135

SP - 11309

EP - 11313

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 30

ER -