A novel conducting polymer based on terthienyl system bearing strong electron-withdrawing substituents and its electrochromic device application

Asil, Demet; Cihaner, Atilla; Algı, Fatih; Önal, Ahmet M.

doi:10.1016/j.jelechem.2008.02.027

Cited by 25 publications

(10 citation statements)

References 40 publications

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“…Nas últimas quatro décadas notou-se um aumentou significativo no estudo de polímeros intrinsecamente condutores (PIC) para serem utilizados em diversas aplicações tecnológicas, como por exemplo: em baterias recarregáveis, super-capacitores, dispositivos eletrônicos e eletrocrômicos, sensores, revestimentos anticorrosivos, blindagem eletromagnética, entre outras [1][2][3][4][5][6][7][8] . Dentre os vários polímeros condutores, o polipirrol (PPy) é um dos mais estudados e utilizados em aplicações comerciais, devido principalmente à sua elevada estabilidade química e ambiental, elevada condutividade elétrica e facilidade de síntese [9][10][11][12] .…”

Section: Introductionunclassified

Obtenção de nanocompósitos condutores de montmorilonita/polipirrol: Efeito da incorporação do surfactante na estrutura e propriedades

et al. 2014

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Resumo: Nanocompósitos de montmorilonita/polipirrol (MMT/PPy) foram preparados a partir da polimerização in situ do pirrol na presença de argila, bentonita sódica natural, (MMT-Na + ) em solução aquosa com ou sem surfactante aniônico, dodecil sulfato de sódio (SDS), utilizando-se o cloreto de ferro (III) hexahidratado (FeCl 3 .6H 2 O), como oxidante. A estrutura e propriedades dos nanocompósitos obtidos pela polimerização in situ do pirrol na presença de SDS (MMT/PPy.SDS) e sem surfactante (MMT/PPy) foram avaliadas e comparadas a partir da espectroscopia de infravermelho com transformada de Fourier (FTIR), difração de raios X (DRX), microscopia eletrônica de varredura (MEV), microscopia eletrônica de transmissão (MET), análise termogravimétrica (TG) e método padrão quatro pontas. Os difratogramas dos nanocompósitos revelaram que o espaçamento basal d 001 da MMT (1,42 nm) foi alterado para valores maiores, indicando a intercalação do PPy na MMT para ambos os nanocompósitos obtidos. Os difratogramas e as imagens de MET e MEV dos nanocompósitos de MMT/PPy.SDS confirmaram que a presença do SDS na reação promoveu, além da intercalação, esfoliação parcial da argila. Os nanocompósitos MMT/PPy.SDS apresentaram condutividade elétrica (9,50 S/cm) maior do que o nanocompósito de MMT/PPy (4,44 S/cm). A presença da argila melhorou de forma significativa a estabilidade térmica do PPy. Palavras-chave: Polipirrol, montmorilonita, nanocompósitos, condutividade elétrica. The Preparation of Montmorillonite/polypyrrole Nanocomposites: The Effect of Surfactant Incorporation on the Structure and PropertiesAbstract: Montmorillonite/polypyrrole (MMT/PPy) nanocomposites were prepared by the in situ polymerization of pyrrole in the presence of clay, natural sodium bentonite, (MMT-Na + ) in aqueous solutions with or without an anionic surfactant, sodium dodecyl sulfate (SDS), using Iron (III) chloride hexahydrate (FeCl 3 .6H 2 O) as oxidant. The structure and properties of the nanocomposites obtained by the in situ polymerization of pyrrole in the presence of SDS (MMT/PPy.SDS) and without surfactant (MMT/PPy) were compared and evaluated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis and the four-point probe method. The XRD patterns of the MMT/PPy composites shows that the d 001 spacing in MMT (1.42 nm) was changed to higher values, indicating the intercalation of PPy on MMT for both nanocomposites. The XRD pattern, SEM and TEM images of the MMT/PPy.SDS nanocomposites confirmed that the presence of SDS in the reaction medium promoted, beyond intercalation, the partial exfoliation of the clay. The MMT/PPy.SDS nanocomposites showed electrical conductivity (9.50 S/cm) higher than the MMT/PPy nanocomposites (4.44 S/cm). The presence of the clay significantly improved the thermal stability of PPy.

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Section: Introductionunclassified

Obtenção de nanocompósitos condutores de montmorilonita/polipirrol: Efeito da incorporação do surfactante na estrutura e propriedades

et al. 2014

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“…In this way, several molecules, nanoparticles and other functional materials were covalently linked to the trimers, including spyropyran [ 343 , 370 ], gold nanoparticles [ 371 ], poly(ethylene glycol) [ 302 , 372 ], cellulose [ 373 ], methaclyate [ 277 ], thiocarbonylthio derivate useful for RAFT (Reversible addition−fragmentation chain-transfer) polymerization [ 275 ] and olefin dendrons [ 374 ]. Numerous works report the preparation of the 3′,4′ trimer diester ( Scheme 19 , III) [ 242 , 361 , 362 , 366 , 375 , 376 ]. Additionally, the work of A. Fazio et Al focuses also on the synthesis of trimers carrying esters on the position 3,4 and 3″,4″ of the lateral thiophenes, rather than on the central one [ 362 ].…”

Section: Trimer Structuresmentioning

confidence: 99%

Thiophene-Based Trimers and Their Bioapplications: An Overview

et al. 2021

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Certainly, the success of polythiophenes is due in the first place to their outstanding electronic properties and superior processability. Nevertheless, there are additional reasons that contribute to arouse the scientific interest around these materials. Among these, the large variety of chemical modifications that is possible to perform on the thiophene ring is a precious aspect. In particular, a turning point was marked by the diffusion of synthetic strategies for the preparation of terthiophenes: the vast richness of approaches today available for the easy customization of these structures allows the finetuning of their chemical, physical, and optical properties. Therefore, terthiophene derivatives have become an extremely versatile class of compounds both for direct application or for the preparation of electronic functional polymers. Moreover, their biocompatibility and ease of functionalization make them appealing for biology and medical research, as it testifies to the blossoming of studies in these fields in which they are involved. It is thus with the willingness to guide the reader through all the possibilities offered by these structures that this review elucidates the synthetic methods and describes the full chemical variety of terthiophenes and their derivatives. In the final part, an in-depth presentation of their numerous bioapplications intends to provide a complete picture of the state of the art.

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“…Keeping this in mind, we have synthesized a new monomer, 4-(2,5-bis(2,3-dihydrothieno [3,4-b] [1,4]dioxin-5-yl)thiophen-3-yl)pyrrolo[1,2-a] quinoxaline (EE-Q), bearing pendant quinoxaline unit as acceptor group and 3,4-ethylenedioxythiophene (EDOT) as donor groups (Scheme 1). It is expected that the resulting hybrid material with donor-acceptor-donor scaffold would have lower band gap [20][21][22][23][24]. Herein we wish to report our results concerning the synthesis and electrochemical polymerization of EE-Q.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electropolymerization of a new ion sensitive ethylenedioxy-substituted terthiophene monomer bearing a quinoxaline moiety

Çarbaş

Kıvrak

Zora

et al. 2012

Journal of Electroanalytical Chemistry

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A novel conducting polymer based on terthienyl system bearing strong electron-withdrawing substituents and its electrochromic device application

Cited by 25 publications

References 40 publications

Obtenção de nanocompósitos condutores de montmorilonita/polipirrol: Efeito da incorporação do surfactante na estrutura e propriedades

Obtenção de nanocompósitos condutores de montmorilonita/polipirrol: Efeito da incorporação do surfactante na estrutura e propriedades

Thiophene-Based Trimers and Their Bioapplications: An Overview

Synthesis and electropolymerization of a new ion sensitive ethylenedioxy-substituted terthiophene monomer bearing a quinoxaline moiety

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