Solution-processable core/shell structured nanocellulose/poly( o -Methoxyaniline) nanocomposites for electrochromic appl
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ORIGINAL RESEARCH
Solution-processable core/shell structured nanocellulose/ poly(o-Methoxyaniline) nanocomposites for electrochromic applications Junye Ren . Sihang Zhang . Bin Yan . Guo Yao . Yi Lin . Mi Zhou . Yingchun Gu . Sheng Chen
Received: 26 April 2020 / Accepted: 29 August 2020 Ó Springer Nature B.V. 2020
Abstract In this research, core/shell structured nanocellulose (NC)/poly(o-Methoxyaniline) (POANI) nanocomposites for electrochromic applications were synthesized by controllable in situ chemical oxidative polymerization. The NC/POANI nanocomposites with different contents of NC can be obtained simply by controlling the relative proportions of the monomers and NC in the polymerization system with hydrochloric acid as the dopant and ammonium persulfate as the oxidant. Films based on the NC/POANI nanocomposites were successfully fabricated by spray-coating technique. The nanocomposite films showed the combination of good film-forming properties and excellent electrochromic behavior. The film based on
NC/POANI nanocomposites containing 40% NC exhibited higher optical contrast (81% at 665 nm) and better cycling stability (sustaining 84% of its initial optical contrast after 500 times cyclic test) compared with pure POANI film. Such NC/POANI nanocomposites with excellent electrochromic performance demonstrate great promise towards achieving the ideal electrochromic applications. Keywords Poly(o-Methoxyaniline) Nanocellulose Nanocomposites Electrochromism Core-shell nanostructures
Introduction Junye Ren and Sihang Zhang have contributed equally to this work
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03424-y) contains supplementary material, which is available to authorized users. J. Ren B. Yan G. Yao Y. Lin M. Zhou Y. Gu S. Chen (&) College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China e-mail: [email protected] S. Zhang State Key Laboratory of Polymer Materials and Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
Electrochromic (EC) materials, which can reversibly change transmittance, reflectance, and absorbance are attracting considerable attention due to their unique responsive behavior and their advantages of low driving voltage, high coloration efficiency and stable memory effect (Chaudhary et al. 2020; Chu et al. 2020; Kim et al. 2019; Kuo et al. 2018; Pathak et al. 2020; Shah et al. 2019). Electrochromic phenomenon was first studied on inorganic transition metal oxides such as WO3, V2O5 and NiO films (Kortz et al. 2019). Recently, organic electrochromic materials, especially conducting polymers, have been widely investigated in electrochromic devices based
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Cellulose
on glass or flexible substrates (Sanglee et al. 2017). Conducting polymers are one of the most promising electrochromic materials owing to their unique properties such as very high p-conjugated length, ease of molecular structure m
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