All‐Printed Electrochromic Stickers

Brooke, Robert; Freitag, Kathrin; Petsagkourakis, Ioannis; Nilsson, Marie; Ersman, Peter Andersson

doi:10.1002/mame.202300044

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…Electrochromic (EC) materials can shift the absorption wavelength and change the absorption intensity after the application of oxidation or a reduction in voltage. Due to its reversible change and regulation under different voltages, EC materials are widely used in smart Windows [ 1 ], electronic labels [ 2 ], color-changing stickers [ 3 ], electronic ink [ 4 ], electronic paper [ 5 ], and smart glasses [ 6 ]. Compared with other inorganic materials and small organic molecules, which can only show a single color change, electrochromic polymers (ECPs) make it easy to obtain various rich colors with low band gaps through structural modification and have been extensively studied [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Poly (Aryl Amino Ketone/Sulfones) with Obvious Electrochromic Effect Prepared by One-Step Low-Cost and Facile Synthesis

et al. 2023

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High-performance donor-acceptor (D-A) polymers, as an important class of electrochromic (EC) materials, have attracted extensive attention. In this paper, a series of novel poly (aryl amino ketone) (PAAK) and poly (aryl amino sulfone) (PAAS) type high-performance polymers (HPP) with electrochromism were prepared by a simple C-N coupling reaction and were coated on an indium tin oxide (ITO) substrate as EC films. All four polymers were prepared by a nucleophilic substitution reaction using commercially purchased amine monomers with difluoride sulfone/ketone using potassium carbonate as a catalyst. A series of tests were performed to compare and analyze the effects of the different electron-withdrawing abilities of sulfone and carbonyl groups, and the different conjugation lengths of these two TPA structures were connected to the EC properties of the polymer. The different phenyl or biphenyl of the two TPA structures mainly affected the oxidation potential of the polymer, while the sulfone group and the carbonyl group, with a different electron absorption ability, had a greater influence on the energy band and cyclic stability. The optical contrast of PAAS−BT at 850 nm was up to 58% and maintained 450 cycles, indicating that this series of materials had a broad application prospect waiting for further research. In addition to the performance, the raw materials used in this work could be directly and commercially purchased for a low price; the two aniline monomers were priced at about $4 /g and $15 /g, respectively. This method significantly reduces the cost and provides a new idea for subsequent large-scale production and practical applications.

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Section: Introductionmentioning

confidence: 99%

Poly (Aryl Amino Ketone/Sulfones) with Obvious Electrochromic Effect Prepared by One-Step Low-Cost and Facile Synthesis

et al. 2023

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“…Electrochromic (EC) materials can reversibly switch their optical states and be precisely managed via a voltage-activated electrochemical reaction, which show a wide range of promising applications, such as smart windows, electronic display devices, and camouflage. − A broad variety of EC materials have been explored, including inorganic transition metal oxides (e.g., WO 3– x , TiO 2– x ), − metal complexes (e.g., Prussian blue), organic small molecules (e.g., viologen and its derivatives), and π-conjugated conducting polymers (CPs) . CPs stand out as a cost-effective material amenable to multimaterial integration, and their electrochromism exhibits fast response, , high coloration efficiency, and stable optical modulation, which makes them promising candidates for commercial EC devices, particularly for electronic display devices. − …”

Section: Introductionmentioning

confidence: 99%