Novel viologen derivatives for electrochromic ion gels showing a green-colored state with improved stability

Hwan Oh; Dong Gyu Seo; Tae Yong Yun; Seong Been Lee; Hong Chul Moon

doi:10.1016/j.orgel.2017.10.001

Novel viologen derivatives for electrochromic ion gels showing a green-colored state with improved stability

Hwan Oh, Dong Gyu Seo, Tae Yong Yun, Seong Been Lee, Hong Chul Moon

Department of Chemical Engineering

University of Seoul

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

47 Scopus citations

Abstract

We successfully synthesized a novel viologen derivative (1,1′-bis(3-fluoro-4-(trifluoromethyl)phenyl)-4,4′-bipyridinium bis(trifluoromethylsulfonyl)imide, TFMFPhV(TFSI)₂) exhibiting a green-colored state. We selected cyanophenyl viologen (CNPhV²⁺), a conventional electrochromic (EC) chromophore with a green color indication, to compare EC performance. Ion gels consisting of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]) were employed as a solid-state electrolyte for EC devices (ECDs). In comparison to CNPhV²⁺-containing devices, the ECDs with TFMFPhV²⁺ showed higher transmittance contrast, larger coloration efficiency, faster coloration and bleaching responses, and better coloration/bleaching operational stability. Cyclic voltammetry revealed that the more stable redox behavior of TFMFPhV²⁺ is the origin of the outstanding ECD performance.

Original language	English
Pages (from-to)	490-495
Number of pages	6
Journal	Organic Electronics
Volume	51
DOIs	https://doi.org/10.1016/j.orgel.2017.10.001
State	Published - Dec 2017

Keywords

Electrochemical display
Electrochromism
Ion gel
Viologen
Zincke reaction

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title = "Novel viologen derivatives for electrochromic ion gels showing a green-colored state with improved stability",

abstract = "We successfully synthesized a novel viologen derivative (1,1′-bis(3-fluoro-4-(trifluoromethyl)phenyl)-4,4′-bipyridinium bis(trifluoromethylsulfonyl)imide, TFMFPhV(TFSI)2) exhibiting a green-colored state. We selected cyanophenyl viologen (CNPhV2+), a conventional electrochromic (EC) chromophore with a green color indication, to compare EC performance. Ion gels consisting of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]) were employed as a solid-state electrolyte for EC devices (ECDs). In comparison to CNPhV2+-containing devices, the ECDs with TFMFPhV2+ showed higher transmittance contrast, larger coloration efficiency, faster coloration and bleaching responses, and better coloration/bleaching operational stability. Cyclic voltammetry revealed that the more stable redox behavior of TFMFPhV2+ is the origin of the outstanding ECD performance.",

keywords = "Electrochemical display, Electrochromism, Ion gel, Viologen, Zincke reaction",

author = "Hwan Oh and Seo, {Dong Gyu} and Yun, {Tae Yong} and Lee, {Seong Been} and Moon, {Hong Chul}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.orgel.2017.10.001",

language = "English",

volume = "51",

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T1 - Novel viologen derivatives for electrochromic ion gels showing a green-colored state with improved stability

AU - Oh, Hwan

AU - Seo, Dong Gyu

AU - Yun, Tae Yong

AU - Lee, Seong Been

AU - Moon, Hong Chul

PY - 2017/12

Y1 - 2017/12

N2 - We successfully synthesized a novel viologen derivative (1,1′-bis(3-fluoro-4-(trifluoromethyl)phenyl)-4,4′-bipyridinium bis(trifluoromethylsulfonyl)imide, TFMFPhV(TFSI)2) exhibiting a green-colored state. We selected cyanophenyl viologen (CNPhV2+), a conventional electrochromic (EC) chromophore with a green color indication, to compare EC performance. Ion gels consisting of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]) were employed as a solid-state electrolyte for EC devices (ECDs). In comparison to CNPhV2+-containing devices, the ECDs with TFMFPhV2+ showed higher transmittance contrast, larger coloration efficiency, faster coloration and bleaching responses, and better coloration/bleaching operational stability. Cyclic voltammetry revealed that the more stable redox behavior of TFMFPhV2+ is the origin of the outstanding ECD performance.

AB - We successfully synthesized a novel viologen derivative (1,1′-bis(3-fluoro-4-(trifluoromethyl)phenyl)-4,4′-bipyridinium bis(trifluoromethylsulfonyl)imide, TFMFPhV(TFSI)2) exhibiting a green-colored state. We selected cyanophenyl viologen (CNPhV2+), a conventional electrochromic (EC) chromophore with a green color indication, to compare EC performance. Ion gels consisting of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]) were employed as a solid-state electrolyte for EC devices (ECDs). In comparison to CNPhV2+-containing devices, the ECDs with TFMFPhV2+ showed higher transmittance contrast, larger coloration efficiency, faster coloration and bleaching responses, and better coloration/bleaching operational stability. Cyclic voltammetry revealed that the more stable redox behavior of TFMFPhV2+ is the origin of the outstanding ECD performance.

KW - Electrochemical display

KW - Electrochromism

KW - Ion gel

KW - Viologen

KW - Zincke reaction

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U2 - 10.1016/j.orgel.2017.10.001

DO - 10.1016/j.orgel.2017.10.001

M3 - Article

AN - SCOPUS:85030682764

SN - 1566-1199

VL - 51

SP - 490

EP - 495

JO - Organic Electronics

JF - Organic Electronics

ER -

Novel viologen derivatives for electrochromic ion gels showing a green-colored state with improved stability

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Keywords

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