Kuo Chung-Wen, Chang Jui-Cheng, Lee Po-Ying, Wu Tzi-Yi, Huang Yu-Chang
Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan.
Bachelor Program in Interdisciplinary Studies, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan.
Materials (Basel). 2018 Oct 3;11(10):1895. doi: 10.3390/ma11101895.
Four copolymers (P(tCz (tris(4-carbazoyl-9-ylphenyl)amine)-co-bTP (2,2'-bithiophene)), P(tCz-co-CPDT (4H-cyclopenta[2,1-b:3,4-b']dithiophene)), P(tCz-co-DTC (3,6-di(2-thienyl)carbazole)), and P(tCz-co-CPDTK (cyclopentadithiophene ketone))) are deposited on indium tin oxide (ITO) surfaces using electrochemical polymerization. Spectroelectrochemical properties of copolymer electrodes reveal that the colors of P(tCz-co-bTP) film are pinkish-orange, light olive green, light grayish blue, and dark blue at 0.0, 0.8, 1.2, and 1.6 V, respectively, whereas the color variations of P(tCz-co-CPDTK) film are light yellow, yellow, and blue at 0.0 V, 0.8 V, and 1.5 V, respectively. The ΔT of P(tCz-co-bTP), P(tCz-co-CPDT), P(tCz-co-DTC), and P(tCz-co-CPDTK) films are estimated to be 43.0% at 967 nm, 28.7% at 864 nm, 43.6% at 870 nm, and 24.5% at 984 nm, respectively. Five electrochromic devices (ECDs) are assembled using the tCz-based homopolymer and copolymers as coloring electrodes, and poly(2,2-dimethyl-3,4-propylenedioxythiophene) (PProDOT-Me₂) as the complementary electrode. P(tCz-co-DTC)/PProDOT-Me₂ ECD reveals high transmittance change (45.9% at 624 nm), P(tCz-co-CPDTK)/PProDOT-Me₂ ECD shows high η (513.0 cm² C at 582 nm), and P(tCz-co-bTP)/PProDOT-Me₂ ECD presents short switching time (less than 0.4 s) at 628 nm. Moreover, these ECDs show satisfactory redox stability and open circuit stability.
通过电化学聚合将四种共聚物（聚（三（4 - 咔唑 - 9 - 基苯基）胺 - 共 - 2,2'- 联噻吩）（P(tCz - co - bTP)）、聚（三（4 - 咔唑 - 9 - 基苯基）胺 - 共 - 4H - 环戊二烯并[2,1 - b:3,4 - b']二噻吩）（P(tCz - co - CPDT)）、聚（三（4 - 咔唑 - 9 - 基苯基）胺 - 共 - 3,6 - 二（2 - 噻吩基）咔唑）（P(tCz - co - DTC)）和聚（三（4 - 咔唑 - 9 - 基苯基）胺 - 共 - 环戊二烯并二噻吩酮）（P(tCz - co - CPDTK)））沉积在氧化铟锡（ITO）表面。共聚物电极的光谱电化学性质表明，P(tCz - co - bTP)薄膜在0.0 V、0.8 V、1.2 V和1.6 V时的颜色分别为粉橙色、浅橄榄绿、浅灰蓝色和深蓝色，而P(tCz - co - CPDTK)薄膜在0.0 V、0.8 V和1.5 V时的颜色变化分别为浅黄色、黄色和蓝色。P(tCz - co - bTP)、P(tCz - co - CPDT)、P(tCz - co - DTC)和P(tCz - co - CPDTK)薄膜在967 nm处的ΔT估计分别为43.0%、在864 nm处为28.7%、在870 nm处为43.6%以及在984 nm处为24.5%。使用基于三（4 - 咔唑 - 9 - 基苯基）胺的均聚物和共聚物作为着色电极，以及聚（2,2 - 二甲基 - 3,4 - 亚丙基二氧噻吩）（PProDOT - Me₂）作为互补电极组装了五个电致变色器件（ECD）。P(tCz - co - DTC)/PProDOT - Me₂ ECD显示出高透光率变化（在624 nm处为45.9%），P(tCz - co - CPDTK)/PProDOT - Me₂ ECD在582 nm处显示出高η（513.0 cm² C），并且P(tCz - co - bTP)/PProDOT - Me₂ ECD在628 nm处呈现短切换时间（小于0.4 s）。此外，这些ECD显示出令人满意的氧化还原稳定性和开路稳定性。
