2026-04-13T00:54:19Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1729782026-01-27T04:16:00Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Escalona, Cindy author Estrany Coda, Francesc author Ahumada Castillo, Juan Carlos Esteban author Borràs Cristòfol, Núria author Soto Galdámes, Juan Pablo author Alemán Llansó, Carlos author 2019-05-03 The preparation of copolymers bearing N-methylcarbazole and 2,7-linked 3,4-ethylenedioxythiophene units has been carried out using the N-methyl-2,7-di(2-(3,4-ethylenedioxythienyl))carbazole monomer, which has been chemically synthesized through the Stille coupling reaction of 2,7-dibromo-N-methylcarbazole and tributyl-stannylated 3,4-ethylenedioxythiophene. Then, the monomer was electropolymerized by chronoamperometry in acetonitrile with 0.1 M LiClO4 under a constant potential of 0.70 V and using steel AISI 316 electrodes. The electrochemical activity and stability, charge–discharge capacity, charge transfer resistance and surface properties (i.e. morphology, topography and wettability) of the resulting polymer have been characterized and compared with those reported for poly(3,4-ethylenedioxythiophene). Finally, the polymer has been obtained by potentiodynamic sweep, applying around 100 cyclic voltammetry steps to an acetonitrile solution of the N-methyl-2,7-di(2-(3,4-ethylenedioxythienyl))carbazole monomer with 0.1 M LiClO4. Results show that although this technique has been mostly used to electropolymerize diheteroaromatic-subtituted carbazoles, the resulting material presents serious disadvantages with respect to that produced by chronoamperometry under a constant potential. Postprint (author's final draft) Àrees temàtiques de la UPC::Enginyeria química Copolymers Conducting polymers Electrolytic oxidation Polymerization Electrochemistry Polymer synthesis Molecular engineering Conducting polymer Polycarbazole Poly(3 4-ethylenedioxythiophene) Potentiodynamic sweep Copolímers Polímers conductors Oxidació electrolítica Polimerització Electroquímica 2,7-Linked N-methylcarbazole copolymers by combining the macromonomer approach and the oxidative electrochemical polymerization