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Article Dans Une Revue ChemElectroChem Année : 2020

Sodium‐Ion Selectivity Study of a Crown‐Ether‐Functionalized PEDOT Analog

Résumé

Abstract An electropolymerized ion‐selective poly‐3,4‐ethylenedioxythiophene (PEDOT) analog is presented in this Communication. Poly‐(2‐phenyl‐15crown‐5‐(3,4‐ethylene‐dioxythiophene)‐amine) (PEDOT‐Crown15) showed excellent electrochemical stability with a fast electron transfer ( ΔE p =50 mV). In comparison with unmodified PEDOT, a faster change from isolating to conducting state was observed. This is attributed to the formation of a well‐ordered internal polymer matrix, caused by the aniline‐Crown15 moiety. In situ electrochemical conductance measurements in the presence of different monovalent cations showed high affinity for Na + ions, as evidenced by the decrease in the conductance of the polymer in comparison with K + and Li + . This selectivity is attributed to a limitation of the charge hopping conductance.

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Chimie
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hal-04396523 , version 1 (16-01-2024)

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Gerardo Salinas, Ariana Villarroel Marquez, Maël Idir, Shekhar Shinde, Bernardo Frontana-Uribe, et al.. Sodium‐Ion Selectivity Study of a Crown‐Ether‐Functionalized PEDOT Analog. ChemElectroChem, 2020, 7 (13), pp.2826-2830. ⟨10.1002/celc.202000693⟩. ⟨hal-04396523⟩

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