新型芳香胺族AB2型超支化聚醯胺高分子之設計、合成與電致變色應用

Abstract

本研究設計與製備芳基胺單衍生物 (N, N-Bis(4-aminophenyl)-N′-(4-carboxyphenyl)-N′-(4-methoxyphenyl)-1,4-phenylenediamine) 之高原子經濟效應AB2型超支化聚醯胺(HPA)。合成的HPA以不同的封端劑進行修飾，以增加多段變色。這些具有固有微孔結構的電活性超支化聚醯胺HPA-TPA和HPA-B，電化學過程中能有效提升電解質的擴散性，並在不同施加電位下表現出多段的變色行為，縮短響應時間和高化學穩定性。值得注意的是HPA-TPA具有最大的固有微孔結構，表現出最突出的特性，如保持光學對比度、三段顏色變化、高著色效率、最短的響應時間和高穩定性。在這項研究中， HPA-TPA的電致變色在裝置表現出卓越的性能，最大著色效率(578 cm2/C)、最大響應速率(27.4% s-1)以及在經1000次切換後，仍保持優異的開關穩定性，具有高達99%的光學可逆性。

A high atomic efficiency AB2-type hyperbranched polyamide (HPA) derived from arylamine monomer (N, N-Bis(4-aminophenyl)-N′-(4-carboxyphenyl)-N′-(4-methoxy-phenyl)-1,4-phenylenediamine) is judiciously designed and prepared. Furthermore, the synthesized HPA is modified with different end-capping units to increase the intrinsic microporous structures. These electroactive HPAs (HPA-B and HPA-TPA) with intrinsic microporous structures exhibit increased counter-ion diffusivity in electrochemical processes, showing multicolored electrochromic behavior at various applied potentials, excellent electrochemical stability, and short switching response times. With the most significant intrinsic microporous structures, HPA-TPA showcased outstanding characteristics, such as a significant optical contrast ratio, three-stage color change, the highest coloration efficiency (CE), shortest switching response times, and high stability. In this investigation, electrochromic devices utilizing ECD-HPA-TPA exhibited remarkable performance, as evidenced by the maximum coloration efficiency (578 cm2/C), the rapid coloration (27.4% s-1), and remarkable switching stability, which persisted even after 1000 cycles, with a higher 99% reversibility in optical properties.