Fluorinated Oleophilic Electrochromic Copolymer Based on 3‐(N‐Trifluoroacetamido)thiophene and 3,4‐Ethylenedioxythiophene (EDOT) | Zendy

Wang Hu | Zendy; Shen Yiyao | Zendy; Ma Peihua | Zendy; Bonnefont Antoine | Zendy; Lv Yaokang | Zendy; Ruhlmann Laurent | Zendy; Ni Hang | Zendy; Liu Wuchan | Zendy; Zhang Cheng | Zendy

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Fluorinated Oleophilic Electrochromic Copolymer Based on 3‐(N‐Trifluoroacetamido)thiophene and 3,4‐Ethylenedioxythiophene (EDOT)

Author(s) -

Wang Hu,

Shen Yiyao,

Ma Peihua,

Bonnefont Antoine,

Lv Yaokang,

Ruhlmann Laurent,

Ni Hang,

Liu Wuchan,

Zhang Cheng

Publication year - 2020

Publication title -

chemelectrochem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 59

ISSN - 2196-0216

DOI - 10.1002/celc.202000530

Subject(s) - electrochromism , pedot:pss , materials science , nanoporous , poly(3,4 ethylenedioxythiophene) , copolymer , thiophene , electrochromic devices , monomer , electrolyte , polymer chemistry , chemical engineering , polymer , nanotechnology , organic chemistry , composite material , chemistry , electrode , engineering

A new fluorine‐containing monomer 3‐(N‐trifluoroacetamido)thiophene ( F‐TH ) was synthesized and characterized for the first time. Its molecular structure was determined through a single‐crystal X‐ray study. F‐TH functions as a building block in electropolymerization with 3,4‐ethylenedioxythiophene ( EDOT ) and subsequently gives a novel conjugated copolymer P ( F‐TH : EDOT ). Compared with the parent homopolymer poly(3,4‐ethylenedioxythiophene) ( PEDOT ) film, the sponge‐like nanoporous P ( F‐TH : EDOT ) film has a slightly larger band gap with a reduced hydrophilic and increased oleophilic surface. Spectroelectrochemical analysis results reveal that P ( F‐TH : EDOT ) exhibits excellent electrochromic performances with a higher optical contrast (55 %) and much shorter coloring time (0.70 s) than that of PEDOT (43 %, 1.54 s). The coloration efficiency value of P ( F‐TH : EDOT ) achieves up to 167.9 cm 2 /C, 55 % higher than that of PEDOT ( 108.1 cm 2 /C ) . These improved electrochromic properties of P ( F‐TH : EDOT ) are probably related with the enhanced wettability to electrolyte solution.

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