Herein, two monomers MTPA and FTPA, and their corresponding polymers (PMTPA and PFTPA) based on a methyl-and fluoro-substituted triphenylamine were synthesized by Stille reaction and electropolymerization. MTPA exhibited the red-shift absorption and fluorescence emission spectra, and lower Eonset (0.53 V) compared with FTPA (0.57 V), which is beneficial to achieve high-quality polymers. The polymer films exhibited reversible color transition from yellow green to deep blue for PMPTA and from dark brown to light blue for PFTPA, respectively. In addition, both PMTPA and PFTPA films exhibited good optical contrasts of 36 % and 40 % at 1100 nm, respectively. The coloration efficiency and response times at 1100 nm are 196.4 C−1 cm2 with 0.6 s for PMTPA, and 160.9 C−1 cm2 with 1.4 s for PFTPA, respectively. These polymer films demonstrated excellent electrochemical property and electrochromic performance. These results will also provide a new strategy to rationally design the excellent electrochromic polymers based on the triphenylamine core.

中文翻译：

---

甲基和氟取代的三苯胺核用于快速切换可见光和近红外电致变色聚合物


在此，通过Stille反应和电聚合合成了两种单体MTPA和FTPA以及它们相应的基于甲基和氟取代的三苯胺的聚合物（PMTPA和PFTPA）。 MTPA表现出红移吸收和荧光发射光谱，与FTPA（0.57 V）相比，Eonset（0.53 V）更低，有利于获得高质量的聚合物。 PMPTA 聚合物薄膜表现出从黄绿色到深蓝色的可逆颜色转变，PFTPA 聚合物薄膜表现出从深棕色到浅蓝色的可逆颜色转变。此外，PMTPA 和 PFTPA 薄膜在 1100 nm 处分别表现出良好的光学对比度，分别为 36% 和 40%。 PMTPA 的显色效率和 1100 nm 处的响应时间分别为 196.4 C−1 cm2（0.6 s）和 PFTPA 的 160.9 C−1 cm2（1.4 s）。这些聚合物薄膜表现出优异的电化学性能和电致变色性能。这些结果也将为合理设计基于三苯胺核的优异电致变色聚合物提供新策略。