Zhang Zhi, Wang Yao, Chen Qun, Gao Qingguo, Liu Liming, Yang Jianjun, Pan Xinjian, Miao Yu, Chi Feng
School of Electronics and Information, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China.
Gui Yang Institute of Humanities and Technology, Guiyang 550025, China.
Micromachines (Basel). 2022 Jul 31;13(8):1235. doi: 10.3390/mi13081235.
The electrophoretic display (EPD) has attracted widespread attention due to its great visual perception, energy-saving, portability, and bistability. However, the EPD still has many problems in response time, colorization, etc., which limits its practical application. In this paper, novel blue electrophoretic particles were prepared with copper (II) phthalocyanine and high ionization 1-butyl-1-methyl piperidinium bromide mono ionic liquid. It was shown that electrophoretic particles dispersed in a non-polar tetrachloroethylene medium had high Zeta potential and electrophoretic mobility. At the same time, electrophoretic particles showed better dispersion stability. Finally, the prepared blue electrophoretic particles and white titanium dioxide particles were compounded to prepare blue and white dual-color electrophoretic dispersion. An EPD cell was made to test its performance. The results showed that the prepared blue and white dual-color electrophoretic dispersion could realize a reversible response. Piperidine mono ionic liquid increased the surface potential of copper (II) phthalocyanine from +30.50 mV to +60.27 mV, enhancing it by 97.61%. Therefore, we believed that modifying particles with high ionization mono ionic liquid had great applicability to the modification of electrophoretic particles, and blue particles prepared with piperidine mono ionic liquid as a charge control agent (CCA) were excellent candidates for EPDs.
电泳显示器（EPD）因其出色的视觉效果、节能、便携性和双稳态而受到广泛关注。然而，EPD在响应时间、彩色化等方面仍存在诸多问题，这限制了其实际应用。本文采用铜（II）酞菁和高电离度的1-丁基-1-甲基哌啶溴化铵单离子液体制备了新型蓝色电泳粒子。结果表明，分散在非极性四氯乙烯介质中的电泳粒子具有较高的Zeta电位和电泳迁移率。同时，电泳粒子表现出较好的分散稳定性。最后，将制备的蓝色电泳粒子与白色二氧化钛粒子复合，制备了蓝白双色电泳分散体。制作了一个EPD单元来测试其性能。结果表明，制备的蓝白双色电泳分散体能够实现可逆响应。哌啶单离子液体使铜（II）酞菁的表面电位从+30.50 mV提高到+60.27 mV，提高了97.61%。因此，我们认为用高电离度单离子液体对粒子进行改性在电泳粒子改性方面具有很大的适用性，以哌啶单离子液体作为电荷控制剂（CCA）制备的蓝色粒子是EPD的优秀候选材料。
