Lv Haiming, Wang Yi, Pan Lei, Zhang Leipeng, Zhang Hangchuan, Shang Lei, Qu Huiying, Li Na, Zhao Jiupeng, Li Yao
Center for Composite Materials and Strucuture, Harbin Institute of Technology, Harbin 150001, China.
Phys Chem Chem Phys. 2018 Feb 21;20(8):5818-5826. doi: 10.1039/c7cp07617g.
In this article, we report the preparation of a TiO nanotube array (TNA) film used as a transparent electrochromic material and a TNA/polyaniline patterned hybrid electrochromic film utilized as an information display material. The TNA film was fabricated by an anodizing process, and a surface patterned TNA with extreme wettability contrast (hydrophilic/hydrophobic) on a TNA surface through self-assembly (SAM) and photocatalytic lithography is fabricated. Then the TNA/polyaniline hybrid film was prepared by electrodeposition of aniline in an aqueous solution. Finally, the electrochromic properties of the TNA film and the TNA/polyaniline hybrid film were investigated. Compared with neat TNA film and polyaniline (PANI) films, the hybrid film shows a much higher optical contrast in the near infrared range. The TNA/polyaniline hybrid film shows higher coloration efficiencies of 24.4 cm C at a wavelength of 700 nm and 17.1 cm C at a wavelength of 1050 nm compared to the TNA coloration efficiency. The color switching time (20.9 s or 22.9 s) of TNA/polyaniline is faster than TNA.
在本文中，我们报道了用作透明电致变色材料的TiO纳米管阵列（TNA）薄膜以及用作信息显示材料的TNA/聚苯胺图案化混合电致变色薄膜的制备。TNA薄膜通过阳极氧化工艺制备，并且通过自组装（SAM）和光催化光刻在TNA表面制备了具有极端润湿性对比（亲水/疏水）的表面图案化TNA。然后通过在水溶液中电沉积苯胺制备TNA/聚苯胺混合薄膜。最后，研究了TNA薄膜和TNA/聚苯胺混合薄膜的电致变色性能。与纯TNA薄膜和聚苯胺（PANI）薄膜相比，混合薄膜在近红外范围内显示出更高的光学对比度。与TNA的着色效率相比，TNA/聚苯胺混合薄膜在700nm波长处显示出24.4cm C的更高着色效率，在1050nm波长处显示出17.1cm C的更高着色效率。TNA/聚苯胺的颜色切换时间（20.9秒或22.9秒）比TNA更快。
