Oriented Two-Dimensional Covalent Organic Framework Films for Near-Infrared Electrochromic Application,Journal of the American Chemical Society

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Oriented Two-Dimensional Covalent Organic Framework Films for Near-Infrared Electrochromic Application
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2019-11-20 , DOI: 10.1021/jacs.9b09956
Qing Hao ₁ , Zhi-Juan Li ₁ , Cheng Lu ₁ , Bing Sun ₂ , Yu-Wu Zhong ₁ , Li-Jun Wan ₁ , Dong Wang ₁

Affiliation

The electrochromic property and device construction of a triphenylamine-based oriented two-dimensional cova-lent organic framework (2D COF) films on the indium tin oxide (ITO) was reported. The characterization of the 2D COF3PA-TT film revealed that the film was uniform, with good crystallinity, and oriented with its 2D plane parallel to the substrate. For the first time, the electrochromic properties of 2D COF3PA-TT film were studied. 2D COF3PA-TT film on ITO exhibited reversible color transition between deep red and dark brown during redox process. Spectroe-lectrochemical experiments revealed color changes in the absorption spectra of 2D COF3PA-TT film in the visible and near-infrared regions and showed the characteristics of intervalence charge transfer. The quasi-solid-state electro-chromic device was prepared based on the COF3PA-TT film and it exhibited moderate performance and stability in the near-infrared region.

中文翻译：

用于近红外电致变色应用的定向二维共价有机骨架薄膜

报道了基于三苯胺的定向二维共价有机骨架 (2D COF) 薄膜在氧化铟锡 (ITO) 上的电致变色性能和器件结构。二维 COF3PA-TT 薄膜的表征表明该薄膜均匀，结晶度好，并且其二维平面平行于基板取向。首次研究了二维COF3PA-TT薄膜的电致变色性能。ITO上的二维COF3PA-TT薄膜在氧化还原过程中表现出深红色和深棕色之间的可逆颜色转变。光谱电化学实验揭示了二维 COF3PA-TT 薄膜在可见光和近红外区域吸收光谱的颜色变化，并表现出间隔电荷转移的特征。

更新日期：2019-11-20

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