In this work, two quinoxline type monomers, 10,14-bis(4-octyl-2-thienyl)-dipyrido[3,2-a:2′,3′-c] [1, 2, 5] thiadiazolo[3,4-i] quinoxaline (OTPTP) and 10,14-bis(4-octyl-2-thienyl)-dibenzo[a, c][1,2,5]thiadiazolo [3,4-i] quinoxaline (OTBTP) were prepared, and the electrochromic features of their polymer films that were synthesized on the ITO glass surface by electrochemical polymerization were studied. The electronic characteristics of two different electron-withdrawing groups and their influences on the electrochemical polymerization of monomers and electrochromic performance of the obtained polymers were observed. The electronic performance of monomers illustrated that OTBTP can be polymerized in the lower potential range than OTPTP due to the stronger electron-withdrawing capability of the electron-withdrawing groups in OTPTP which contains two dipyridine units. The UV Visible NIR spectra analysis showed that both polymers, POTPTP and POTBTP, have one broad absorbance band in the region of 400 ~ 1600 nm at the neutral state. The electrochromic analysis revealed that the two polymer films exhibited reasonable optical contrasts in the infrared region of 1000 ~ 1600 nm with low response time (about 5 s) and low band gap.

在这项工作中，两个喹喔啉型单体10,14-双（4-辛基-2-噻吩基）-二吡啶并[3,2- a：2'，3'- c ] [ 1,2,5 ]噻二唑[3] ，4- i ]喹喔啉（OTPTP）和10,14-双（4-辛基-2-噻吩基）-二苯并[ a，c ] [1,2,5]噻二唑[3,4- i制备了喹喔啉（OTBTP），并研究了通过电化学聚合在ITO玻璃表面合成的聚合物薄膜的电致变色特性。观察到两个不同的吸电子基团的电子特性及其对单体电化学聚合和所得聚合物电致变色性能的影响。单体的电子性能表明，由于包含两个二吡啶单元的OTPTP中吸电子基团的吸电子能力较强，因此OTBTP可以在比OTPTP更低的电位范围内聚合。紫外可见NIR光谱分析表明，在中性状态下，聚合物POTPTP和POTBTP均在400〜1600 nm范围内具有一个较宽的吸收带。