研究报道了一种基于可吸附的固态紫精化合物电致变色器件. 我们设计并合成了一种新型可吸附的不对称紫精化合物，其一端引入三苯胺基团用以修饰紫精化合物的电致变色性质，另一端引入膦酸基团使其固定于电极上，以提高变色速度，增加器件稳定性. 将所合成的材料应用于器件中，得到了高透过差值和高稳定的电致变色器件. 我们利用紫外-可见-红外分光光度计、电化学工作站以及CIE 1931 %Y_Lxy色度系统对其电致变色性能以及颜色进行了表征.

An electrochromic device (ECD) can change color absorption when subjected to an appropriate voltage. Such a device includes three components: a working electrode, a counter electrode, and an electrolyte. Viologens (Vio) are commonly used kinds of compounds cathodic electrochromic materials, and triphenylamines (TPA) are anodic electrochromic materials. Here, we designed and synthesized a novel donor-acceptor type electrochromic viologen, 1-(N-phenyl-N-p- tolylbenzenamine)-1'-(2-phosphnoethyl)-4,4'-bipyridinium dichloride (VT), which contained a triphenylamine (TPA) group that tunes the electron cloud structure of viologen, so as to tune the electrochromic color, and a phosphonic acid group that will be anchored onto the surface of TiO₂ nano-particles, so as to improve color changing speed. And an electrochromic electrode was prepared by chemisorption using the synthesized VT as the primary electrochromic material, and a Prussian blue electrode was prepared using electrochemical deposition method as the secondary one. IR spectral and X-Ray Photoelectron Spectrometer showed that the VT molecules were well bonded with Titanium dioxide nanoparticles film. And then those electrodes were assembled into one device using PC/LiClO₄ as electrolyte. The performances of solid electrochromic device based on adsorbable viologen were also characterized. As expected, the device exhibited vivid changing color, light yellow in the bleached state and indigo blue in the dark state, fast color changing time (less than 1 s) and good stability (up to 10000 cycles), which was contributed by the adsorption structures. By using the CIE 1931 %Y_Lxy colorimetric system (Commission Internationale de I'Eclairage), color coordinates of the ECD were also measured. The good electrochromic performance suggested this device could be widely used to manufacture smart glasses, auto-mobile windows, and anti-dazzle mirrors.