Effect of the acceptor moiety on the electrochemical and electrochromic properties of Donor-Acceptor-Donor polymer films

Triantou, Despina; Soulis, Spyridon; Asaftei, Carmen Simona; Janietz, Silvia

doi:10.1016/s1452-3981(23)06553-7

Cited by 7 publications

(1 citation statement)

References 21 publications

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“…Additionally, the EC thin films show a saturated green color in the reduced state at a low applied voltage of −1.5 V and sand colors in the oxidized state at +1.5 V. The fabrication of chameleonic textile The issue of such rigid donor-acceptor-donor molecules is their low solubility in organic solvents, such as acetonitrile or propylene carbonate (PC), and thus also in standard electrolytes used for electrochemical polymerization. The electropolymerization of quinoxaline derivatives without alkyl or alkoxy substituents can only be carried out in chlorinated solvents like dichloromethane [23] or mixtures of acetonitrile and dichloromethane [28]. Specifically, the introduction of substituents with long alkyl chains can drastically improve the solubility and is of high importance for the processability and production of EC thin films.…”

Section: Introductionmentioning

confidence: 99%

Electropolymerization of an EDOT-Quinoxaline Monomer for Green Electrochromic Thin Films and Devices

Schott,

Niklaus,

Janietz

et al. 2024

Polymers

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In this study, we present a 5,8-bis(3,4-ethylenedioxythiophene)quinoxaline monomer with two 4-(octyloxy)phenyl side chains (EDOTPQ) that can be electropolymerized on ITO glass in standard electrolytes containing lithium salts and propylene carbonate as solvent. The electrochemically deposited PEDOTPQ layers show very good adhesion and homogeneity on ITO. The green-colored polymer thin films exhibit promising electrochromic (EC) properties and are interesting for applications such as adaptive camouflage, as well as smart displays, labels, and sensors. Novel organic–inorganic (hybrid) EC cell configurations were realized with Prussian blue (PB) or titanium-vanadium oxide (TiVOx) as ion storage electrodes, showing a highly reversible and fast color change from green to light yellow.

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Section: Introductionmentioning

confidence: 99%

Electropolymerization of an EDOT-Quinoxaline Monomer for Green Electrochromic Thin Films and Devices

Schott,

Niklaus,

Janietz

et al. 2024

Polymers

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Multicomponent Reactions as Synthetic Design Tools of AIE and Emission Solvatochromic Quinoxalines

Biesen¹,

Müller²

2022

Handbook of Aggregation‐Induced Emission

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2,3‐Di(thiophen‐2‐yl)quinoxaline Amine Derivatives: Yellow‐Blue Fluorescent Materials for Applications in Organic Electronics

2019

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In this work, we have designed and synthesized new donoracceptor (D-A) type, 2,3-di(thiophen-2-yl)quinoxaline based amine derivatives (2-10). These compounds contain diaryl/ heterocyclic amine segment and quinoxaline core as an electron donor and acceptor respectively. The synthesized molecules were fully characterized by standard spectroscopic techniques. Absorption spectra of all compounds showed intramolecular charge transfer (ICT) transition in the range of 390 to 461 nm. Dyes emit in yellow-blue region with emission maxima within 465 to 566 nm on excitation at their respective ICT absorption maxima. Moreover, compound 2, 3 and 9 exhibit aggregation induced emission in THF:water system due to the formation of nanoaggregates. Electrochemical properties of 2-10 were studied by cyclic voltammetry. The HOMO and LUMO energy level were found in the range of -4.90 to -5.70 eV and -3.10 to -3.36 eV respectively, with an electrochemical band gap (E g ) from 1.72 to 2.48 eV. Molecules showed good thermal stability. Theoretical studies were also carried out by using DFT and TD-DFT calculation. Based on photophysical and electrochemical properties these derivatives could be used as solid state emitter and ambipolar charge transport materials in optoelectronic devices.[a] S.

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Effect of the acceptor moiety on the electrochemical and electrochromic properties of Donor-Acceptor-Donor polymer films

Cited by 7 publications

References 21 publications

Electropolymerization of an EDOT-Quinoxaline Monomer for Green Electrochromic Thin Films and Devices

Electropolymerization of an EDOT-Quinoxaline Monomer for Green Electrochromic Thin Films and Devices

Multicomponent Reactions as Synthetic Design Tools of AIE and Emission Solvatochromic Quinoxalines

2,3‐Di(thiophen‐2‐yl)quinoxaline Amine Derivatives: Yellow‐Blue Fluorescent Materials for Applications in Organic Electronics

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