Tuning the photoluminescence and anisotropic structure of PEDOT

Ivanko, Iryna; Pánek, Jiří; Svoboda, Ján; Zhigunov, Alexander; Tomšík, Elena

doi:10.1039/c9tc00955h

Cited by 17 publications

(10 citation statements)

References 43 publications

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“…The XPS spectra of PEDOT prepared in NaCl or H 3 PO 4 are similar, and the spectra are identical to those reported in the literature so far . In high-resolution core-level C 1s spectra (Figure ) three different peaks located at 284.2, 285.1, and 286.0 eV corresponding to C–S–, C–O–, and −CH 2 –CH 2 – were observed for the PEDOT film prepared in different electrolytes . Additionally, the presence of formic acid in PEDOT in HCOOH was confirmed by XPS analysis; the binding energy peak of −O–CO is located at 288.4 eV (Figure ).…”

Section: Resultssupporting

confidence: 84%

“…The XPS spectra of PEDOT prepared in NaCl or H 3 PO 4 are similar, and the spectra are identical to those reported in the literature so far. 29 In highresolution core-level C 1s spectra (Figure 3 30 Additionally, the presence of formic acid in PEDOT in HCOOH was confirmed by XPS analysis; the binding energy peak of −O− CO is located at 288.4 eV (Figure 3). 31 On the other hand, the high-resolution core-level S 2p XPS spectrum of PEDOT film in formic acid is completely different (see Figure 3, red rectangle), and a detailed explanation is given below.…”

Section: Introductionmentioning

confidence: 82%

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Hydrogen Bonding as a Tool to Control Chain Structure of PEDOT: Electrochemical Synthesis in the Presence of Different Electrolytes

et al. 2020

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The current knowledge about the presence of cation radicals in organic semiconductors is connected with oxidized constitutional units and their interaction with counterions. In this work, we have shown that the formation of cation radicals in poly(3,4-ethylenedioxythiophene) is induced by intermolecular electrostatic interactions, particularly by hydrogen-bond formation between formic acid and polymer. Raman, XPS, UV–vis, and EPR spectroscopies were used to prove that by using the simplest carboxylic acid, which can form hydrogen bonding, it is possible to form localized cation radicals. Moreover, it was shown that by replacing formic acid with o-phosphoric acid, it is possible to obtain delocalized cation radicals. The gained new understanding how to tune the formation and nature of cation radicals in organic semiconductors can be used in the design of organic electronics.

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Section: Resultssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 82%

Hydrogen Bonding as a Tool to Control Chain Structure of PEDOT: Electrochemical Synthesis in the Presence of Different Electrolytes

et al. 2020

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“…The Raman spectra of PEDOT solutions (any) could not be measured due to the presence of photoluminescence; however, the Raman spectrum of the final PEDOT film was measured at an excitation wavelength of laser 785 nm, which is similar to that reported in the literature. [ 35 ] Based on our FTIR and Raman spectroscopy results, we can conclude that the PEDOT obtained by the self‐polymerization reaction in the presence of formic acid has a similar chemical structure to the PEDOT reported in the literature.…”

Section: Resultssupporting

confidence: 67%

“…Similar behavior was recorded for the PEDOT film deposited by other methods. [ 35 ] Cyclic voltammetry was also recorded in acetonitrile in the range from −1.6 to 1.6 V versus Ag wire, and the results are presented in Figure S7 (Supporting Information). The cyclic voltammetry in organic electrolyte also has one oxidation and one reduction peak.…”

Section: Resultsmentioning

confidence: 99%

Method of Preparation of Soluble PEDOT: Self‐Polymerization of EDOT without Oxidant at Room Temperature

Tomšík

Ivanko

Svoboda

et al. 2020

Macro Chemistry & Physics

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The preparation of soluble conducting polymers proceeds by the chemical oxidation method in the presence of water‐soluble polyelectrolytes. Among conducting polymers, polyethylene‐(3,4‐dioxythiophene) (PEDOT) is the most investigated due to its intrinsic properties. In this work, for the first time a simple method of ethylene‐(3,4‐dioxythiophne) self‐polymerization without applying any oxidant and with the formation of PEDOT solution at room temperature with a yield of 100% is presented. This PEDOT solution could be deposited on many desirable surfaces (by simple evaporation of the solvent) for various applications from photovoltaic cell to pseudocapacitors. Moreover, it is discovered that the self‐polymerization method does not produce byproducts, which makes the method environmentally friendly. The effect of light and different acids is explored. Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy (XPS), and Raman spectroscopy confirm the formation of PEDOT by the self‐polymerization method. Moreover, this method provides a way to obtain and study individual PEDOT chains. The self‐polymerization method may be applied for the preparation of other conducting polymers.

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“…Most applications require the formation of conjugated polymer layers on the surface. Polymer films are usually created using spin-coating [ 36 ], drop-casting [ 37 ], or spray-coating [ 36 ] methods. Nevertheless, such approaches are hardly applicable for native PEDOT or PProDOT, which are generally insoluble and infusible [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Ladder-like Polymer Brushes Containing Conjugated Poly(Propylenedioxythiophene) Chains

Grześ

Wolski

Uchacz

et al. 2022

IJMS

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The high stability and conductivity of 3,4-disubstituted polythiophenes such as poly(3,4-ethylenedioxythiophene) (PEDOT) make them attractive candidates for commercial applications. However, next-generation nanoelectronic devices require novel macromolecular strategies for the precise synthesis of advanced polymer structures as well as their arrangement. In this report, we present a synthetic route to make ladder-like polymer brushes with poly(3,4-propylenedioxythiophene) (PProDOT)-conjugated chains. The brushes were prepared via a self-templating surface-initiated technique (ST-SIP) that combines the surface-initiated atom transfer radical polymerization (SI-ATRP) of bifunctional ProDOT-based monomers and subsequent oxidative polymerization of the pendant ProDOT groups in the parent brushes. The brushes prepared in this way were characterized by grazing-angle FTIR, XPS spectroscopy, and AFM. Steady-state and time-resolved photoluminescence measurements were used to extract the information about the structure and effective conjugation length of PProDOT-based chains. Stability tests performed in ambient conditions and under exposure to standardized solar light revealed the remarkable stability of the obtained materials.

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Tuning the photoluminescence and anisotropic structure of PEDOT

Abstract: The photoluminescence and anisotropic structure of PEDOT are obtained in the presence of ions that perturb the water structure.

Cited by 17 publications

References 43 publications

Hydrogen Bonding as a Tool to Control Chain Structure of PEDOT: Electrochemical Synthesis in the Presence of Different Electrolytes

Hydrogen Bonding as a Tool to Control Chain Structure of PEDOT: Electrochemical Synthesis in the Presence of Different Electrolytes

Method of Preparation of Soluble PEDOT: Self‐Polymerization of EDOT without Oxidant at Room Temperature

Ladder-like Polymer Brushes Containing Conjugated Poly(Propylenedioxythiophene) Chains

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