主链含苯并二噻吩的D-A结构甲壳型共轭聚合物的合成与表征  

Synthesis and Characterization of D-A Structure Mesogen Jacketed Polymers Containing Benzodithiophene in Main Chains

作　　者：万里鹰[1] 李佩杰 易凡 Liying Wan;Peijie Li;Fan Yi(School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《高分子材料科学与工程》2021年第7期27-34,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51463016);江西省重点研发计划(CK201601140)。

摘　　要：以给电子的苯并二噻吩(Donor)作为聚合物的主链、吸电子氰基为端基的三联苯液晶基元(Acceptor)作为侧链,并在苯并二噻吩苯环空位上引入不同的基团,通过Suzuki和Stille偶联反应,聚合得到2种甲壳型共轭聚合物P1(PBDTTTP-CN)和P2(PBDTDTTTP-CN)。2种聚合物溶解性良好,热重测试表明2种聚合物有较好热稳定性,热降解温度高于300℃。紫外可见吸收光谱表明2种聚合物在280~570 nm范围有较宽的吸收,电化学测试2种聚合物的带隙分别为2.10 eV和2.15 eV,表明新型聚合物是一种性能良好的潜在电致发光材料。Two novel mesogen jacketed conjugated polymers,PBDTTTP-CN and PBDTDTTTP-CN,were synthesized by Suzuki and Stille coupling polymerization.Benzodithiophene(Donor)was used as main chain,terphenyl liquid crystal units with cyanoterminal groups(Acceptor)was used as side chain,and different groups linked to the benzene ring vacancy of benzodithiophene were introduced in the molecular structures.The two polymers have good solubility,TG tests show that the two polymers have the good thermal stability and the thermal degradation temperatures are more than 300℃.The UV-vis absorption spectra show that the two polymers have the wide absorption in the range of 280~570 nm.The band gaps of the two polymers are 2.10 eV and 2.15 eV,respectively,indicating that the polymers are potential electroluminescent materials with good properties.

关 键 词：甲壳型聚合物 三联苯液晶基元 苯并二噻吩 D-A结构 

分 类 号：TB34[一般工业技术—材料科学与工程]