近年来,在电致变色领域基于甲基紫精修饰高比表面积的纳米TiO2薄膜电极取得了巨大的进步,并将这项技术推向商业化.本文介绍了一种由有机变色分子修饰纳米晶TiO2薄膜电极而组装成的电致变色器件,通过"嫁接"在甲基紫精分子上的磷酸基和纳米TiO2薄膜电极表面的羟基化学吸附,我们得到了具有良好电致变色性能的"电子纸".本文采用的电解质是0.05mol/L的高氯酸锂和0.05mol/L的二茂铁的1,4丁内酯溶液,对电极为透明导电玻璃.实验证明该电致变色器件具有很高的稳定性,并达到了毫秒级的响应速度,在未来显示领域"电子纸"的商业化进程中具有很大的潜力.
Progress in recent years in the field of electrochromic displays based on viologen modified high -surface area nanocrystalline TiO2 film electrodes has moved the technology towards commercialisation. A elec-trochromic device based on a transparent nanostructured TiO2 film modified by organic electrochromphores sup-ported on conducting glass is described. By the chemiabsorption between hydroxyl groups on the surface of nanostructured TiO2 film and phosphonic acid attachment groups which are defivatised on the viologen mole-cules,we obtain a E - paper device with excellent properties of electrochromic. The electrolyte is 0.05mol/L LiCIO4 and0.05mol/L ferrocene in 1,4 -butyrolactone and the counter electrode is conducting glass. It is showed that this electrochromic device is of high stable,its respond time is less millisecond,suggests an elec-trochromic technology with commercial potential in the field of display in the future.
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