A fast-response electrochromic device based on a composite gel film comprising triphenylamine derivatives and WO

To obtain an electrochromic device with a quick response and multicolor change, N,N ′-(4-((3-(triethoxysilyl)propyl)imino)methyl)phenyl- N,N ′-diphenyl-4,4′-biphenyl-diamine (TPB-PSSO) containing a tetraphenylbenzidine (TPB) unit and siloxane group was synthesized, and its electrochromic properties...

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Bibliographic Details
Published in:New journal of chemistry 2021-03, Vol.45 (12), p.553-558
Main Authors: Zhang, Xuejian, Zeng, Jinming, Xu, Zipeng, Zhu, Mimi, Liu, Ping
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Summary:To obtain an electrochromic device with a quick response and multicolor change, N,N ′-(4-((3-(triethoxysilyl)propyl)imino)methyl)phenyl- N,N ′-diphenyl-4,4′-biphenyl-diamine (TPB-PSSO) containing a tetraphenylbenzidine (TPB) unit and siloxane group was synthesized, and its electrochromic properties were investigated. Using the TPB-PSSO gel film and a WO 3 /TPB-PSSO gel film as active materials, electrochromic devices (ECDs) having the structures indium tin oxide (ITO)/TPB-PSSO gel film/ITO and ITO/WO 3 film/TPB-PSSO gel film/ITO, respectively, were prepared. These two devices exhibited a fast response according to chronoamperometry measurements, with coloring and bleaching times of 4 and 9 ms and 5 and 5 ms, respectively. The WO 3 /TPB-PSSO-based composite device containing TPB-PSSO and WO 3 exhibits fast-response, rich color changes, and good cycling stability.
ISSN:1144-0546
1369-9261
DOI:10.1039/d1nj00113b