Poly(3,4-ethylenedioxythiophene) and Polyaniline Bilayer Nanostructures with High Conductivity and Electrocatalytic Activity

Abstract

Bilayer nanostructured poly(3,4-ethylenedioxythiophene) (PEDOT) and polyaniline (PANI) conducting polymer composites have been successfully prepared by oxidative polymerization of the parent monomers, aniline (An) and 3,4-ethylenedioxythiophene (EDOT), in aqueous solutions of p-toluenesulfonic acid (p-TSA). As the first step, PANI nanofibers were obtained in the p-TSA solution using ammonium persulfate (APS) as the oxidant. Subsequently, PEDOT was coated onto the PANI nanofibers by the oxidative polymerization of EDOT to form PEDOT/PANI bilayer nanofibers. The resulting nanostructured material was characterized by SEM and a range of spectroscopic methods, which confirmed that the surface layer of the synthesized materials had features typical of chemically synthesized PEDOT. The presence of the PEDOT layer increased the room temperature electrical conductivity of the PEDOT/PANI nanocomposites by 2 orders of magnitude in comparison with the parent PANI nanofibers. Moreover, PEDOT/PANI nanocomposites on a glassy carbon electrode showed stronger electrocatalytic activity for the oxidation of ascorbic acid than PANI nanofibers.

Processable, Regioregular, and “Click”able Monomer and Polymers Based on 3,4-Propylenedioxythiophene with Tunable Solubility

“…To the residue 10 mL of water was added and extracted 3-4 times from 10 mL of ethyl acetate. The combined organic layer was dried over Na 2 "Click" Chemistry with Poly(ProDOT-propargyl) Using Azidoacetic Acid (P1a). To a suspension of 0.01 g (0.04 mmol) of poly(ProDOT-propargyl) in 10 mL of DMSO was added 0.1 g (0.98 mmol) of azidoacetic acid.…”

PEDOT nanocomposites mediated dual-modal photodynamic and photothermal targeted sterilization in both NIR I and II window

“…1c). The formation of PEDOT was confirmed by XRD, and FTIR spectroscopy [39]. Only one broad peak centered at 25 was observed in the XRD image (Fig.…”

Porous NiO/poly(3,4-ethylenedioxythiophene) films as anode materials for lithium ion batteries

“…The peak at 1100 cm −1 is assigned to the stretching vibration of C-O-C in the ethylene dioxy group. The peaks at 970, 830, and 630 cm −1 are due to C-S stretching vibration in the thiophene ring [19][20][21][22]. A peak characteristic of NiO at 440 cm −1 is also observed.…”