Zhou Yijie, Huang Aibing, Ji Shidong, Zhou Huaijuan, Jin Ping, Li Rong
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Dingxi 1295, Changning, Shanghai, 200050, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
Chem Asian J. 2018 Feb 16;13(4):457-462. doi: 10.1002/asia.201701747. Epub 2018 Feb 5.
Photochromic inks for repeatable light-printed media have attracted increasing attention owing to the fact that they may be widely applied to reduce the consumption of papers and plastics and conserve the environment. Therefore, it is of practical significance to develop convenient photochromic inks with a low cost and on a large scale. In this study, a simple one-step hydrothermal route was used to prepare tungsten trioxide (WO ) nanoparticles, which were further used to make photochromic inks and transparent photochromic films. The obtained transparent photochromic film could rapidly respond to UV light within tens of seconds, then return to its initial state, with different recovery times at different temperatures, and also exhibit good reversible coloration-bleaching effect. A typical polyethylene terephthalate (PET) foil coated with the photochromic ink could also be repeatedly printed with various patterns and displayed excellent rewritable performance over tens of cycles. This study proposes a simple method for widespread applications of WO -based photochromic inks.
用于可重复光印刷介质的光致变色油墨因其可广泛应用于减少纸张和塑料消耗以及保护环境而受到越来越多的关注。因此，开发低成本、大规模的便捷光致变色油墨具有实际意义。在本研究中，采用简单的一步水热法制备了三氧化钨（WO₃）纳米颗粒，进一步用于制备光致变色油墨和透明光致变色薄膜。所制备的透明光致变色薄膜能在数十秒内快速响应紫外光，然后恢复到初始状态，在不同温度下恢复时间不同，且具有良好的可逆显色-褪色效果。涂有光致变色油墨的典型聚对苯二甲酸乙二酯（PET）箔也可以反复印刷各种图案，并在数十个循环中表现出优异的可重写性能。本研究提出了一种用于基于WO₃的光致变色油墨广泛应用的简单方法。
