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Synthesis of Carboxyl-EDOT as a Versatile Addition and Additive to PEDOT:PSS

Abstract : Two steps synthesis of EDOT (3,4-ethylenedioxythiophene) derivate bearing a carboxylic acid group (carboxyl-EDOT) is presented. This reactive monomer has been copolymerized with EDOT to afford PEDOT copolymers. Thanks to the most common additives usually added to the PEDOT:PSS dispersion, ethylene glycol and 4-Dodecylbenzenesulfonic acid (DBSA), the carboxylic acid has been used to crosslink the material via esterification reactions. This result offers the possibility to produce a polymer network without adding any crosslinking agent. Furthermore, the short synthetic pathway of carboxyl-EDOT offers the possibility to incorporate new functionality either in EDOT monomer or in PEDOT materials with a reasonable chemical effort and background.
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https://hal.archives-ouvertes.fr/hal-02107646
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Daniele Mantione, Ariana Villarroel Marquez, Federico Cruciani, Cyril Brochon, Eric Cloutet, et al.. Synthesis of Carboxyl-EDOT as a Versatile Addition and Additive to PEDOT:PSS. ACS Macro Letters, Washington, D.C : American Chemical Society, 2019, 8 (3), pp.285-288. ⟨10.1021/acsmacrolett.8b00970⟩. ⟨hal-02107646⟩

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