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设计合成了两种新型单体,电化学聚合制得了相应D-A型聚合物:聚{10,13-二(3,4-乙烯二氧噻吩基)二苯并[a,c]吩嗪}(P1)和聚{10,13-二(4-乙基噻吩-2-基)二苯并[a,c]吩嗪}(P2).研究发现,聚合物膜P1在中性态呈现绿色,且随着电压的增加呈现多种不同的颜色,其在1600 nm时最大光学对比度达74.8%,响应时间为0.6 s,着色效率(CE)为285.8cm2/C.聚合物膜P2在氧化态和还原态时分别为灰蓝色和军绿色,也具有较高的光学对比度,快速的转换响应以及较高的着色效率.另外,这两种导电聚合物都具有较低的光学禁带(Eg)(P1为1.26 e V,P2为1.54 e V).本研究提供了两种具有优良性能的电致变色材料,并对其性能参数进行了分析研究.
Two novel monomers were designed and synthesized, and the corresponding DA polymers were prepared by electrochemical polymerization. Poly {10,13-bis (3,4-ethylenedioxythienyl) dibenzo [a, c] P1) and poly {10,13-bis (4-ethylthiophen-2-yl) dibenzo [a, c] phenoxazine} (P2) .The polymer film P1 was found to be green in neutral state, The results showed that the maximum optical contrast was 74.8% at 1600 nm, the response time was 0.6 s, and the color rendering efficiency (CE) was 285.8 cm 2 / In the reduced state, they are gray-blue and army green, respectively, and also have higher optical contrast, faster conversion response and higher coloring efficiency.In addition, both conductive polymers have lower optical bandgap (Eg) (P1 = 1.26 eV, P2 = 1.54 eV) .This study provides two kinds of electrochromic materials with excellent properties and analyzes their performance parameters.