Synthesis and electrochemical investigation of beta-substituted thiophene-based donor–acceptor copolymers with 3,4-ethylenedioxythiophene (EDOT)

Araujo, Marcus H. de; Matencio, Túlio; Donnici, Cláudio Luis; Calado, Hállen Daniel Rezende

doi:10.1007/s10008-016-3297-1

Cited by 4 publications

(12 citation statements)

References 49 publications

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“…Since the copolymer sample possesses larger average particle size value compared to their homopolymers, the heat of degradation is higher, leading to improved thermal stability. The improved results are in well agreement with that expected from DFT studies carried out by other workers [30]. Thus, from the above-studied physicochemical trends explored for all the as-synthesized copolymer samples of varied compositions, a statistical survey of the relative percentage with respect to the yield, solubility, solubility in NMP solvent and thermal stability at 800 °C, respectively, was carried out and is displayed in Fig.…”

supporting

confidence: 88%

“…It greatly enhances the scope for polymer scientists and considerably improves the properties of the derivatives compared to that of the homopolymers [29]. Moreover, it yields materials with uniform composition and the properties can be modified plainly by adjusting the ratio of concentration of starting monomers [30,31]. Literature survey reveals that copolymerization procedure at present has become an effective way out for polymer engineering especially at the molecular level [32,33].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization and physicochemical studies of copolymers of aniline and 3-nitroaniline

Waware

Majumdar²

2019

Polym. Bull.

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Polyaniline (PA), the versatile conducting polymer, owing to its tunable optoelectronic properties, facile preparation methodology and reversible redox behavior, has elicited much interest among current researchers, particularly in the fields of energy generation storage devices, protective coatings and electrochemical sensors. However, its commercialization has been much restricted due to low solution processability and thermal stability. Recent studies reveal that the above-mentioned challenges can effectively be addressed by copolymerization of PA with suitable components. In addition, the properties of copolymers could be modified and tuned by varying the monomer ratios. Thus, the present work is concerned with the fabrication of poly(aniline-co-3-nitroaniline) with varying compositions obtained by in situ oxidative copolymerization of aniline and 3-nitroaniline by altering the molar ratio of monomers. Optimization of the physicochemical properties such as UV-visible absorption, solubility, thermal stability, electrical conductivity and dielectric signatures, particle size and morphology was achieved by varying the composition of monomeric substituents in these copolymers. Smoother morphology of the copolymer films was revealed by morphological studies via AFM technique and supported by particle size distribution study. The physicochemical trends demonstrated that proper proportions of nitro (-NO 2) group in the polymer chain are essential to achieve desired optimal physicochemical properties. Therefore, copolymers are ideally appropriate for multifaceted applications and would promote wider usage of conjugated polymers in various fields of organic-based optoelectronic as well as energy storage devices in the near future.

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supporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and physicochemical studies of copolymers of aniline and 3-nitroaniline

Waware

Majumdar²

2019

Polym. Bull.

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“…This table shows that the copolymers presented a shift towards the high-energy side of the spectrum (hypsochromic shift) in comparison to PEDOT, which may be explained by the presence of substituted groups on the polymeric structure, rising the possible electronic transitions. This shift was lower for PEDOT-co-PPhTCb since there is more electron delocalization due to the resonance effect of the group -COOPh, directly attached to the thiophene ring [36] . On the other hand, PEDOT-co-PPhTAc-2b presented the opposite effect: the band shifting to the low-energy spectrum region (bathochromic shift), which corroborates the influence of the electron-withdrawing effect of the nitro group [36] .…”

Section: Spectroelectrochemistrymentioning

confidence: 94%

“…The electron-acceptor monomers: 3-thiophene phenylacetate (PhTAc-2a), 3-thiophene(4-nitrophenyl)acetate (PhTAc-2b), and 3-thiophenephenylcarboxylate (PhTCb) were synthesized and characterized on previous work. More detailed information about the electropolymerization and characterization of these copolymers can be found in previous work [36] . 3,4-ethylenedioxythiophene (EDOT, 97%) and sodium perchlorate (NaClO 4 , 98%) were purchased from Aldrich.…”

Section: Methodsmentioning

confidence: 99%

“…After testing the oxidizing potential for the electron-acceptor monomers [36] , solutions of these monomers with EDOT have been prepared in acetonitrile containing 0.1 M of NaClO 4 and using a content of 4:1 (moles/moles) of EDOT:monomer. The films for the spectroelectrochemical characterization were electrodeposited onto ITO coated glass by cyclic voltammetry (20 cycles at a scanning rate of 50 mV s −1 ) through a PalmSens potentiostat.…”

Section: Preparation Of the D-a Copolymersmentioning

confidence: 99%

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Electrical and spectroelectrochemical investigation of thiophene-based donor-acceptor copolymers with 3,4-ethylenedioxythiophene

et al. 2020

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Electrochromic Insight on Electro‐Deposited Copolymers of Push‐Pull Conjugated Systems with 3,4‐Ethylenedioxythiophene (EDOT) and Other Conjugated Units

Ergun,

Hacioglu

2023

ChemistrySelect

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Third generation conducting polymers (CP) are push‐pull type conjugated systems, which include both electron pushing and pulling units in their chemical structure. Push‐pull design enables coarse and fine tuning in the electro‐optical properties of the resulting CP such as lowering the band gap and enhancing electrochromic properties. Push‐pull CPs have been widely used for various applications such as electrochromic devices, displays, light emitting diodes, organic solar cells, field effect transistors, electrochemical and optical sensors etc. This review aims to collect electrochemically synthesized CPs of push‐pull systems in the literature, up to 2023. Most of the studies include 3,4‐ethylenedioxythiophene (EDOT) as co‐monomers, but there are also other studies such as obtaining push‐pull type CPs by copolymerization, and copolymerization of push‐pull systems with other units. Each case is discussed in separate sections. In the scope of this review, only electrochemical copolymerization studies are selected, and the effect of monomer feed ratio and the polymerization conditions on the electrochromic properties of the resulting copolymers are discussed and summarized in tables. This collection can serve as a guide for upcoming copolymerization studies, by giving an insight into optical and electrochromic properties of various copolymers of push‐pull systems so far.

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Synthesis and electrochemical investigation of beta-substituted thiophene-based donor–acceptor copolymers with 3,4-ethylenedioxythiophene (EDOT)

Cited by 4 publications

References 49 publications

Synthesis, characterization and physicochemical studies of copolymers of aniline and 3-nitroaniline

Synthesis, characterization and physicochemical studies of copolymers of aniline and 3-nitroaniline

Electrical and spectroelectrochemical investigation of thiophene-based donor-acceptor copolymers with 3,4-ethylenedioxythiophene

Electrochromic Insight on Electro‐Deposited Copolymers of Push‐Pull Conjugated Systems with 3,4‐Ethylenedioxythiophene (EDOT) and Other Conjugated Units

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