Magenta-Blue Electrofluorochromic Device Incorporating Eu(III) Complex, Anthracene Derivative, and Viologen Molecule

Nakamura, Kazuki; Yanagawa, Namiko; Kobayashi, Norihisa

doi:10.3390/ma15155202

Cited by 4 publications

(1 citation statement)

References 52 publications

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“…5a. [55][56][57] Meanwhile, The P3HT layer (at −1.6 V) is oxidized from the inherent state (pink) to polaronic state (colorless) through releasing electrons to the positive electrode. Therefore, the color of the ECD shows blue before the potential is turned off.…”

Section: Resultsmentioning

confidence: 99%

2D-Layered Structure WS₂ Nanosheets with Improved Electrochromism for Organic-Based Device

Zhang¹,

Wang²,

Luo³

et al. 2023

J. Electrochem. Soc.

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A solid-state electrochromic device is assembled via polythiophene (P3HT) and tungsten disulfide (WS2)-introduced ethyl viologen (EV) layers. The WS2 nanosheets are prepared via a facile one-step hydrothermal technique and investigated via scanning electron microscopy, X-ray diffractometer, and Raman spectra. The device exhibits enhanced electrochromic properties, such as response time (0.9 s/1.3 s), cyclic stability (1000 cycles), coloration efficiency (410 cm2 C-1), and reversible color switching from pink to blue, at the small applied potential (±1.6 V). This indicates that WS2 with graphene-like 2D-layered nanostructure has the weak van der Waals force between the layers, which can store and transfer electrical charges between the films and electrolytes, thus improving the carrier mobility, which is crucial for improving the properties of electrochromic devices. In addition, the introduction of WS2 promoted the device to become one of the most efficient polythiophene-viologen based devices. Therefore, this work provides a basis for the development of new electrochromic devices as alternatives to graphene-based devices.

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Section: Resultsmentioning

confidence: 99%

2D-Layered Structure WS₂ Nanosheets with Improved Electrochromism for Organic-Based Device

Zhang¹,

Wang²,

Luo³

et al. 2023

J. Electrochem. Soc.

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Electrochemically controllable emission and coloration using a modified electrode with a layered clay compound containing viologen derivative and europium(iii) complex

Cao,

Kobayashi,

Nakamura

et al. 2025

J. Mater. Chem. C

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Transition metal complexes for electrochromic and electrofluorochromic devices

Kim

Kubo

2023

Pure and Applied Chemistry

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This minireview discusses recent advances in transition metal complexes for electrochromic (EC) and electrofluorochromic (EFC) devices. EC and EFC materials can switch their color and photoluminescence, respectively, through electrochemical redox reactions. Transition metal complexes offer promising opportunities due to their molecular design versatility for various optoelectrical properties. The review provides an overview of electrochromism and electrofluorochromism, including performance characterization methods and device fabrication techniques. It highlights EC transition metal complexes that can form thin films suitable for device applications and EFC transition metal complexes that can efficiently tune photoluminescence through electrochemical quenching mechanisms. The review also summarizes advanced functions of EC/EFC transition metal complexes, including large optical contrast, fast response, dual-switching of color and emission, and easy device fabrication, which could lead to low-cost displays. Overall, this review article presents the latest research on transition metal complexes for EC and EFC devices and their potential for practical applications.

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Magenta-Blue Electrofluorochromic Device Incorporating Eu(III) Complex, Anthracene Derivative, and Viologen Molecule

Cited by 4 publications

References 52 publications

2D-Layered Structure WS₂ Nanosheets with Improved Electrochromism for Organic-Based Device

2D-Layered Structure WS₂ Nanosheets with Improved Electrochromism for Organic-Based Device

Electrochemically controllable emission and coloration using a modified electrode with a layered clay compound containing viologen derivative and europium(iii) complex

Transition metal complexes for electrochromic and electrofluorochromic devices

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Magenta-Blue Electrofluorochromic Device Incorporating Eu(III) Complex, Anthracene Derivative, and Viologen Molecule

Cited by 4 publications

References 52 publications

2D-Layered Structure WS2 Nanosheets with Improved Electrochromism for Organic-Based Device

2D-Layered Structure WS2 Nanosheets with Improved Electrochromism for Organic-Based Device

Electrochemically controllable emission and coloration using a modified electrode with a layered clay compound containing viologen derivative and europium(iii) complex

Transition metal complexes for electrochromic and electrofluorochromic devices

Contact Info

Product

Resources

About

2D-Layered Structure WS₂ Nanosheets with Improved Electrochromism for Organic-Based Device

2D-Layered Structure WS₂ Nanosheets with Improved Electrochromism for Organic-Based Device