The structure and properties of PEDOT synthesized by template-free solution method

Abstract

In this study, a simple one-step template-free solution method was developed for the preparation of poly(3,4-ethylenedioxythiophene) (PEDOTs) with different morphologies by adjusting various ratios of oxidant (FeCl3·6H2O) to monomer (3,4-ethylenedioxythiophene (EDOT)). The results from structural analysis showed that the structure of PEDOT was strongly affected by the oxidant/monomer ratio, and the polymerization degree, conjugation length, doping level, and crystallinity of PEDOT decreased with increasing of the oxidant/monomer ratio. The morphological analysis showed that PEDOT prepared from an oxidant/monomer ratio of 3:1 displayed a special coral-like morphology, and the branches of ‘coral’ would adjoin or grow together with increasing content of oxidant in the reaction medium; consequently, the morphology of PEDOT changed from coral to sheets (at an oxidant/monomer ratio of 9:1). The electrochemical analysis proved that the PEDOT prepared from an oxidant/monomer ratio of 3:1 had the lowest resistance and the highest specific capacitances (174 F/g) at a current density of 1 A/g with a capacity retention rate of 74% over 1,500 cycles, which indicated that the PEDOT with a coral-like morphology could be applied as a promising electrode material for supercapacitors.

A Novel Poly(3,4-ethylenedioxythiophene)-graphene Oxide/Titanium Dioxide Composites Counter Electrode for Dye-Sensitized Solar Cell

“…The (001) peak of GO at 10.6 ∘ is originated from the stacked graphene sheets in the GO [31]. All conducting polymers show a characteristic peak assigned to the interchain planar ring stacking at approximately 2 ∼26 ∘ [32][33][34]. In this work, PEDOT also shows a peak at 25.2 ∘ indexed by (107) which is due to interchange planar ring stacking (JCPDS 00-048-1449).…”

Graphene/poly(3,4-ethylenedioxythiophene)/Fe3O4 nanocomposite – An efficient oxygen reduction catalyst for the continuous electricity production from wastewater treatment microbial fuel cells

“…rGO/PEDOT composite exhibited the characteristic D and G bands along with the significant PEDOT Raman bands at 985 and 1123 cm À1 (Fig. 4ii(d)), which represent the oxyethylene ring deformation and CeOeC deformation, respectively [52,53]. rGO/PEDOT/Fe 3 O 4 composite ( Fig.…”

Electrical conduction mechanism of poly(3,4-ethylenedioxythiophene) nanofiber bundles at low temperature

“…3.6). The fiber morphology offers a high specific surface area for ion accessing into the polymer matrix storing higher charge [22]. …”