High performance electrochromic devices based on a polyindole derivative, poly(1H-benzo[g]indole)

Nie, Guangming; Wang, Ling; Liu, Changlong

doi:10.1039/c5tc02308d

Cited by 53 publications

(21 citation statements)

References 63 publications

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“…The EC materials coated to the transparent conducting electrode can change their optical properties reversibly and continuously by applying a small electric potential. Thus, the [89][90][91][92] organics such as Prussian blue, small organic molecule [93][94][95][96][97] including conjugated polymers, [96][97][98][99] transition metal complexes, 34,40,79,[100][101][102][103][104] viologens 105 and conducting polymers. [106][107][108][109] have been examined recently.…”

Section: Electrochromismmentioning

confidence: 99%

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

et al. 2021

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Section: Electrochromismmentioning

confidence: 99%

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

et al. 2021

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“…For example, poly(1H‐benzo[g]‐indole) (PBIn) showed an enhanced coloration efficiency. [ 51 ] Upon application of a 1.5 V bias, PBIn shows an EC color change from gray (neutral) to pale green (oxidized). The monomer of PBIn has a benzo‐moiety, which increases the molecular conjugation and improves the stability of the doped states of PBIns.…”

Section: Electrochromism In Conjugated Polymersmentioning

confidence: 99%

Electrochromic Conjugated Polymers for Multifunctional Smart Windows with Integrative Functionalities

Kim

Rémond

Kim

et al. 2020

Adv Materials Technologies

121

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In the advent of next‐generation smart windows, materials play a multifunctional role, providing not only a pleasant environment for humans but also energy‐efficient buildings and transportation. To this ends, smart windows tend to integrate multiple functions with the purpose of controlling external or sunlight input, self‐power functionality, and display functionality. Among the several chromogenic mechanisms, electrochromic methods are fast and simple to control. Here, the recent electrochromic research on the integration of different functionalities is reviewed. Efforts toward the combination of functionalities have led to synergetic and technical breakthroughs over the years. These include development of new electrochromic polymers by main chain, as well as, side chain engineering, morphology and assembly control, and nanostructurization. In this context, electrochemical principles for smart windows offer easier integration of functionalities due to the integrative principles in common working mechanisms for color, energy, and information carrier controls. Some examples of multifunction devices are electrochromic capacitive windows, self‐powered smart windows, and electrochromic‐luminescent windows. Herein, discussed are the electrochromism from polymers and the electrochemically driven smart windows with two or more functionalities, which give rise to an innovative material with cooperative functions, featuring energy storage, energy generation, or light emission.

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“…The electrochromic properties of PIn were firstly mentioned by Maarouf and coworkers . Recently, our group reported electrochromic properties of poly(1H‐benzo[g]indole), poly(indole‐6‐carboxylic acid), and poly(5‐formylindole) . Spectroelectrochemical studies showed that the dual‐type ECD based on PIns had fast response time, high optical contrast and coloration efficiency (CE), providing an avenue of the PIn family.…”

Section: Introductionmentioning

confidence: 99%

“…24 Recently, our group reported electrochromic properties of poly(1H-benzo[g]indole), poly(indole-6-carboxylic acid), and poly(5-formylindole). [25][26][27] Spectroelectrochemical studies showed that the dual-type ECD based on PIns had fast response time, high optical contrast and coloration efficiency (CE), providing an avenue of the PIn family. The design and synthesis of new electrochromic polymers with different colors and good stabilities still attract great attention due to their potential applications in ECD, LED, and photovoltaic devices.…”

mentioning

confidence: 99%

A Free‐standing electrochromic material of poly(5,7‐bis(2‐(3,4‐ethylenedioxy)thienyl)‐indole) and its application in electrochromic device

Yang

Liu

Guo

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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Free‐standing poly(5,7‐bis(2‐(3,4‐ethylenedioxy)thienyl)‐indole) (PETI) was electrochemically obtained from 5,7‐bis(2‐(3,4‐ethylenedioxy)thienyl)‐indole (ETI) prepared by Stille coupling reaction of 5,7‐dibromoindole and 3,4‐ethylenedioxythiophene. For comparison, poly(5,7‐bis(2‐thiophene)‐indole) was also electrosynthesized from 5,7‐bis(2‐thiophene)‐indole (BTI) which was prepared from the 5,7‐dibromoindole and thiophene. Characterizations of ETI and BTI were performed by cyclic voltammetry, scanning electron microscopy, 1H NMR, and 13C NMR spectroscopy. Spectroelectrochemical studies showed PETI had better electrochromic properties and showed two different colors (brown and blue‐violet) under various potentials with better maximum contrast (ΔT%) and coloration efficiency (CE). An electrochromic device (ECD) based on PETI and poly(3,4‐ethylenedioxythiophene) (PEDOT) was also constructed and characterized. This ECD had fast response time, high CE, better optical memory, and long‐term stability. These results indicated that PETI had potential applications for ECD. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 2356–2364

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High performance electrochromic devices based on a polyindole derivative, poly(1H-benzo[g]indole)

Abstract: An ECD based on electrochromic poly(1H-benzo[g]indole) was fabricated. The color of this ECD can switch between green and navy blue with good optical contrast, high coloration efficiency, fast response time, better optical memory and long-term stability.

Cited by 53 publications

References 63 publications

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

Electrochromic Conjugated Polymers for Multifunctional Smart Windows with Integrative Functionalities

A Free‐standing electrochromic material of poly(5,7‐bis(2‐(3,4‐ethylenedioxy)thienyl)‐indole) and its application in electrochromic device

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