Solid-state electrochromic device based on two poly(thiophene) derivatives

Ribeiro, Adriana S.; Machado, Dirnei Aparecido; Filho, Pedro Faria dos Santos; Paoli, Marco

doi:10.1016/j.jelechem.2003.12.033

Cited by 33 publications

(10 citation statements)

References 28 publications

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“…Electronically conducting polymers [1][2][3] are still a very popular research field among the scientists due to their use in a wide range of marketable applications such as electrochromic devices [4][5][6], polymer light-emitting diodes (LEDs) [7], thin film transistors [8], sensors, and conducting polymer electrodes in charge storage devices [9][10][11][12]. Among the great number of conducting polymers, thiophene and its derivatives unquestionably are one of the most studied monomers due to their structural versatility, high environmental stability of its doped and undoped states and suitability to applications like electrode materials and conductors [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Cebeci

Geyik

Sezer

et al. 2007

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Cebeci

Geyik

Sezer

et al. 2007

Journal of Electroanalytical Chemistry

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“…2,1,3-Benzothiadiazole was brominated in the presence of HBr/Br 2 . Subsequent reduction of 4,7-dibromobenzo[c] [1,2,5]thiadiazole was performed with NaBH 4 in EtOH. The diamine derivative was condensed with benzaldehyde to get the electron accepting benzimidazole unit (BImB).…”

Section: Synthesis Of Monomersmentioning

confidence: 99%

“…Conjugated polymers are taken into account as inspiring materials over the past three decades since they have enormous advantages over their inorganic counterparts in use of optoelectronic devices such as light emitting diodes, field effect transistors, organic solar cells, and electrochromic devices [1][2][3][4][5][6]. One of the most important advantages is their ease of fine-tuning ability via structural modification to get desirable polymers with improved electrochemical properties [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of hydrogen bonding on electrochromic properties of conducting polymers

Akpinar

Nurioglu

Toppare

2012

Journal of Electroanalytical Chemistry

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“…7,[31][32][33][34][35][36][37] In the present paper, PAni, chitosan and clay hybrid materials were prepared in hydrochloric acid (HCl) medium in order to investigate the electrochromic properties of these materials in aqueous acid medium and to quantify the color changes of each hybrid material using the Commission Internationale de l'Eclairage (CIE) principles, 38,39 aiming their application as active layers in ECDs.…”

Section: Introductionmentioning

confidence: 99%

Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials

Silva¹,

Sarmento²,

Faez³

et al. 2016

Journal of the Brazilian Chemical Society

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Hybrid materials based on polyaniline (PAni) were obtained by in situ polymerization of aniline with chitosan and/or organically modified clay (nanomer I-24) in HCl. The samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and direct current (DC) electrical conductivity. Thin films of PAni, PAni-clay, PAni-chitosan and PAni-chitosan-clay were prepared by casting a solution of each sample in N-methyl-2-pyrrolidone (NMP) onto indium tin oxide (ITO)/glass electrodes and their electrochromic properties were investigated. It was observed color variation from transparent yellow in the reduced state (E = −0.2 V vs. Ag/AgCl), green in the intermediate state (E = 0.5 V) and dark blue in the oxidized state (E = 0.8 V) for all samples. The color changes of each material in function of the applied potential were tracked using the Commission Internationale de l'Eclairage (CIE) system of colorimetry, in which the color change was much more significant for PAni-clay film.Keywords: conjugated polymer, hybrid material, polyaniline, chitosan, organophilic clay IntroductionConjugated polymers have attracted the attention of academia and industries mainly because of their electrical, magnetic, and optical properties, which make them useful for applications in organic optoelectronic devices. Currently, the development of new hybrid materials based on conjugated polymers have afforded materials with excellent characteristics for application in organic light emitting diodes (OLEDs), 1,2 organic field effect transistors (OFETs), 3 organic solar cells (OSCs), 4 and electrochromic devices (ECDs). [5][6][7] Electrochromic materials based on conjugated polymers show many interesting properties such as multicolor, fast switching speed, flexibility and easy to optimize their properties through molecular tailoring. 8,9 Among the organic polymeric electrochromic materials, polyaniline (PAni) has been widely studied due to many advantageous properties including high optical contrast (∆%T), environmental stability, easy synthesis, as well as comparatively low cost.8 Furthermore, the high pseudocapacitance arising from the versatile redox reactions and its corresponding color changes make PAni promising candidate for electrochemical capacitors 10,11 and ECDs. 12,13 However, the difficulties in processing of PAni into films due to its very low solubility in most of the available solvents and the relatively poor mechanical properties decrease its performances and utilities in such applications.Despite PAni can be synthesized by chemical 14 or electrochemical 15 polymerization methods described in the literature, PAni films with good mechanical properties and adherence to a surface are not usually achieved from the conventional chemical methods of synthesis, which yield PAni as an insoluble and infusible bulky powder. 16 In order to increase the processability and mechanical properties of PAni, significant efforts have been done in preparation of blends based on PA...

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Solid-state electrochromic device based on two poly(thiophene) derivatives

Cited by 33 publications

References 28 publications

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Influence of hydrogen bonding on electrochromic properties of conducting polymers

Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials

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