The display devices of the future will tend to be multifunctional, and the dual-mode device for emission and coloration satisfies the requirements of practical applications. We synthesized materials with electrochromic (EC) and electrofluorochromic (EFC) properties through the combination of triarylamine (TAA) and ladder-like polysilsesquioxanes (LPSQs). The ladder-like structure was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and ²⁹Si-NMR techniques. These polymers exhibit up to 37.3% fluorescence (PL) quantum efficiency (Ф_PL) and show strong solid-state fluorescence because TAA groups are effectively isolated in ladder-like backbone in LPSQs. The TAA-LPSQs films exhibit reversible change from colorless of bleached state to blue or green of oxidized state. Among them, the optical contrast of the MPA-LPSQ film synthesized from 1-(4-(bis(4-methoxyphenyl)amino)phenyl)-3-(3-(triethoxysilyl)propyl)urea is as high as 83.0% at 787 nm, which shows excellent cycle stability over 1000 s. Unique structure and good electrochemical activity of TAA-LPSQs make them promising materials for dual-mode device. The EC/EFC device (ECD/EFCD) was assembled using MPA-LPSQ as an active layer which showed good performance. In addition, TAA-LPSQs exhibit excellent sensitivity to 2,4,6-trinitrotoluene (TNT) and 2,4,6-trinitrophenol (TNP) detection, so these materials can also be applied as highly sensitive chemosensor for explosives.

未来的显示设备将趋向于多功能，并且用于发射和着色的双模设备可以满足实际应用的要求。我们通过结合三芳基胺（TAA）和阶梯状聚倍半硅氧烷（LPSQs）来合成具有电致变色（EC）和电致变色（EFC）特性的材料。通过傅立叶变换红外光谱（FTIR），X射线衍射（XRD）和²⁹ Si-NMR技术确认了梯状结构。这些聚合物表现出高达37.3％的荧光（PL）量子效率（Ф _PL），并显示出强大的固态荧光，因为TAA基团有效地隔离在LPSQ的梯状骨架中。TAA-LPSQs膜呈现出从无色的漂白态到蓝色或绿色的氧化态的可逆变化。其中，由1-（4-（双（4-（4-甲氧基苯基）氨基）苯基）-3-（3-（三乙氧基甲硅烷基）丙基）脲合成的MPA-LPSQ薄膜的光学对比度在787处高达83.0％。 nm，在1000 s内显示出出色的循环稳定性。TAA-LPSQs的独特结构和良好的电化学活性使其成为用于双模器件的有前途的材料。使用MPA-LPSQ作为有源层组装EC / EFC器件（ECD / EFCD），表现出良好的性能。此外，TAA-LPSQ对2,4,6-三硝基甲苯（TNT）和2,4,6-三硝基苯酚（TNP）的检测表现出出色的灵敏度，