Synthesis of phosphorus-containing polyanilines by electrochemical copolymerization

Beatriz Martínez-Sánchez, Andrés Felipe Quintero-Jaime, Francisco Huerta, Diego Cazorla-Amorós, Emilia Morallón

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the phosphonation of a polyaniline (PANI) backbone was achieved in an acid medium by electrochemical methods using aminophenylphosphonic (APPA) monomers. This was done through the electrochemical copolymerization of aniline with either 2-or 4-aminophenylphosphonic acid. Stable, electroactive polymers were obtained after the oxidation of the monomers up to 1.35 V (reversible hydrogen electrode, RHE). X-ray photoelectron spectroscopy (XPS) results revealed that the position of the phosphonic group in the aromatic ring of the monomer affected the amount of phosphorus incorporated into the copolymer. In addition, the redox transitions of the copolymers were examined by in situ Fourier-transform infrared (FTIR) spectroscopy, and it was concluded that their electroactive structures were analogous to those of PANI. From the APPA monomers it was possible to synthesize, in a controlled manner, polymeric materials with significant amounts of phosphorus in their structure through copolymerization with PANI.

Original languageEnglish
Article number1029
JournalPolymers
Volume12
Issue number5
DOIs
Publication statusPublished - 1 May 2020
Externally publishedYes

Keywords

  • Electrochemical polymerization
  • Modified polyaniline
  • Phosphorus
  • Polyaniline

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