The Synthesis and Characterization of -3,4-Ethylenedioxythiophene Derivatives with Electroactive Features

Olech, Kamila; Sołoducho, Jadwiga; Łaba, Katarzyna; Data, Przemysław; Łapkowski, Mieczysław; Roszak, Szczepan

doi:10.1016/j.electacta.2014.07.084

Cited by 7 publications

(6 citation statements)

References 36 publications

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“…The band gap energy ( E g ) is the energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) . The optical band gap was calculated from the onset of oligomer absorption ( λ onset ) by converting the wavelength to energy using the following equation: E g = hc/ λ onset [eV] . Here, h is Planck's constant, c is the speed of light in a vacuum, and λ onset is the onset absorption of the polymer.…”

Section: Resultsmentioning

confidence: 99%

Effects of side groups on the thermoelectric properties of composites based on conjugated poly(3,4‐ethylenedioxythiophene methine)s with low bandgaps

Lai

Xiang

et al. 2016

Polymer Composites

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A series of conjugated poly(3,4-ethylenedioxythiophene methine)s (PEDOT-Ms) with different side groups (e.g., electron-withdrawing, electron-donating, and electronneutralizing groups) containing 3,4-ethylenedioxythiophene (EDOT) units was synthesized and characterized, showing low optical bandgaps. Then, the PEDOT-M polymers were blended with graphite (G) to prepare polymer-inorganic composites to compare their thermoelectric (TE) properties. The optical absorption study indicated direct bandgaps ranging from 1.72 to 1.79 eV. The results showed that PEDOT-M polymers with strongly electron-withdrawing and electron-donating groups exhibited lower bandgap values and higher Seebeck coefficients, and their composites exhibited better TE properties than PEDOT-M with an electronneutralizing side group. The highest figure of merit (ZT) value for the (poly[{3,4-ethylenedioxythiophene-2,5-diyl} {p-nitrobenzylidene}{3,4-ethylenedioxythiophenequinodimethane-2,5-diyl}])(PEDOT-NBQ)/80 wt% G composite was 6.75 3 10 23 at 1208C, which was higher than the ZT value of the other PEDOT-M/G composites. These results reveal a novel approach using the structural modifications of polymers to improve the understanding of TE performance and confirm that the conjugated PEDOT-M samples studied are low-bandgap conducting polymers that can be used as TE materials. POLYM. COMPOS.,

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Section: Resultsmentioning

confidence: 99%

Effects of side groups on the thermoelectric properties of composites based on conjugated poly(3,4‐ethylenedioxythiophene methine)s with low bandgaps

Lai

Xiang

et al. 2016

Polymer Composites

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“…The replacement of the oxygen with sulfur led to a bathochromic effect. 20 Spectroelectrochemical investigation of ethylenedioxythiophene derivatives (Figure 2) revealed upon oxidation, an absorption peak at 505 nm notably different from the absorption spectrum of bis-EDOT. 25 When the applied potential is staircased back down to open circuit potential (OCP), this absorption signal diminishes, responding to the shifting result between the rate of the electrochemical generation of the cation radical and the rate of the chemical reaction terminating the cation radical.…”

Section: Luminescence Propertiesmentioning

confidence: 99%

“…Suzuki coupling between dibromoarylenes and boronic acid derivatives was used for obtaining several oligomeric derivatives of 3,4-ethylenedioxythiophene (EDOT). 20 The procedure was subsequently performed using Pd(PPh3)4 as a catalyst. This reaction was carried out in dry toluene at 90 o C for ca.…”

Section: π-Conjugated Precursorsmentioning

confidence: 99%

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Conjugated arylenes: their convenient synthesis, luminescence characteristics, and applications

Sołoducho¹,

Zając²,

Cabaj³

et al. 2016

Arkivoc

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Conjugated arylenes have significant perspectives as active materials useful in electronics, i.e. as semiconductors or solar cells. Organic semiconductors maintain the related processability, as with polymers, while retaining optoelectronic characteristics, i.e., high absorption coefficients of photons in the visible-region. This review summarizes recent developments in semiconducting polymers for electronic tools. This includes information on substitution and localization, branching, and its impact on functional materials.

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“…9). Without a doubt it is the polaronic band [56,57] which means that in this case, the electropolimerization occurs.…”

Section: Spectroelectrochemical Measurementsmentioning

confidence: 99%

Synthesis and photophysical properties of novel multisubstituted benzene and naphthalene derivatives with high 2D-π-conjugation

et al. 2015

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The Synthesis and Characterization of -3,4-Ethylenedioxythiophene Derivatives with Electroactive Features

Cited by 7 publications

References 36 publications

Effects of side groups on the thermoelectric properties of composites based on conjugated poly(3,4‐ethylenedioxythiophene methine)s with low bandgaps

Effects of side groups on the thermoelectric properties of composites based on conjugated poly(3,4‐ethylenedioxythiophene methine)s with low bandgaps

Conjugated arylenes: their convenient synthesis, luminescence characteristics, and applications

Synthesis and photophysical properties of novel multisubstituted benzene and naphthalene derivatives with high 2D-π-conjugation

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