Recovery and characterization of pure poly(3,4‐ethylenedioxythiophene) via biomimetic template polymerization

Abstract

The fundamental properties of pure poly(3,4‐thylenedioxythiophene) (PEDOT), one of the most common electrically conducting organic polymers, are the key to the development of more prominent applications in which PEDOT and its derivatives can be utilized. Conducting molecular complex of PEDOT with silica was synthesized in the presence of charged silica template by the in situ biomimetic polymerization. To remove silica from PEDOT/template complex, hydrofluoric acid was used to etch silica particles. The electrochemical, thermal, and optical properties of pure PEDOT recovered were investigated in comparison with those of EDOT monomer or PEDOT with template by using UV–vis–near–IR spectra, cyclic voltammetry, thermogravimetric analysis, and fluorescence spectra. POLYM. ENG. SCI., 47:71–75, 2007. © 2006 Society of Plastics Engineers

Synthesis and Physical Vapor Deposition of Low-Molecular-Weight Poly(3,4-ethylenedioxythiophene)

“…20) Also, Huh et al prepared PEDOT in the presence of a charged silica template and then removed the silica with hydrofluoric acid to extract pure PEDOT. They reported that the pure PEDOT has major absorption bands at 345, 425, and 470 nm, 21) which are in good agreement with the spectra shown in Fig. 6.…”

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

“…The absorption at 630 nm is commonly attributed to the excitation of the quinone diimine structure (− N QN−; Q, quinoid) in PANI, which appeared as a peak in the spectrum of the PANI nanorods (Figure A) but was less apparent in the spectrum of PEDOT/PANI nanorods due to new PEDOT absorption bands (Figure B). A new broad shoulder absorption peak centered at 450 nm corresponding to the π-π* transition of PEDOT and a broad absorption feature in the 700 to 900 nm range related to the charge-carrier band of PEDOT appeared in the spectrum of PEDOT/PANI , which therefore confirms the presence of PEDOT. It needs to be noted that the absorption peaks in the spectrum of PEDOT/PANI have some shift compared with the absorption peaks in the spectrum of pure PEDOT (Figure C), which may be caused by the morphology difference and the interaction of PANI with PEDOT.…”

Plasmonic enhanced polymer solar cell with inclusion of Ag@SiO2 core‐shell nanostructures

“…An increase in conductivity was observed upon the addition of SiO 2 nanoparticles to PEDOT films 41 and an increased conductivity in hybrid PEDOT-SiO 2 films. 42 The increase in the conductivity of the PEDOT films in the presence of SiO 2 nanoparticles was explained by the formation of a conducting molecular complex between PEDOT and SiO 2 43 or by a change in the structural organization of PEDOT polymer chains in the presence of SiO 2 nanoparticles. 23 Analysis of absorption spectra showed the absence of an additional band at 500-1200 nm in the absorption spectra of PEDOT:PSS + Ag@SiO 2 composite films (Figure 2, curves 3-6), associated with the formation of a charge transfer complex PEDOT and SiO 2.…”