新型苯并二吡咯酮与苯并二噻吩衍生物的共聚及性能研究  

Synthesis and Properties of Novel D-A Copolymers Containing Benzodipyrrolidone and Benzodithiophene Units

作　　者：石淦徽 董浩 陈学刚[1] SHI Gan-hui;DONG Hao;CHEN Xue-gang(Key Laboratory of Rubber-plastics of Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《合成化学》2021年第10期856-861,共6页Chinese Journal of Synthetic Chemistry

基　　金：山东省自然科学基金资助项目(ZR2011BM001)。

摘　　要：以苯并二吡咯酮(BDP)类衍生物为电子受体单元,噻(硒)吩修饰的苯并二噻吩(BDT)类作为电子给体单元,通过钯催化Stille缩聚反应合成了3种新型的给体-受体(D-A)共聚物PBDP-BDT(T),PBDP-BDT(Se),PBDP-BDTT(T),并采用核磁共振、凝胶渗透色谱、紫外-可见分光光度计、循环伏安法,热重分析对3种聚合物的结构和性能进行了表征。结果表明:3种聚合物紫外可见吸收范围为250~1200 nm,其能量最低的吸收峰分别位于680 nm,722 nm,744 nm;起始氧化电位分别为0.90 eV,0.73 eV,0.75 eV,由此估算出其电化学能隙分别为1.72 eV,1.47 eV,1.40 eV,显示出较窄的能隙特征。此外,聚合物还具有较好的热稳定性。Three novel(D-A)copolymers PBDP-BDT(T),PBDP-BDT(Se)and PBDP-BDTT(T)were synthesized through Stille coupling reaction from benzodipyrrolidones(BDP)derivative which was used as an electron acceptor unit with thiophene orselenophene-modified benzodithiophenes(BDT)which were used as electron donor,and Pd as catalyst.The structures and properties of three D-A copolymers were characterized by NMR,GPC,UV-Vis,CV and TGA.The results showed that PBDP-BDT(T),PBDP-BDT(Se)and PBDP-BDTT(T)exhibited a wide UV-Visible absorption range from 250 nm to 1200 nm with low energy absorption peaks at 680 nm,722 nm,744 nm,respectively.The initial oxidation potentials of PBDP-BDT(T),PBDP-BDT(Se)and PBDP-BDTT(T)were 0.90 eV,0.73 eV,0.75 eV and estimated electrochemical energy gaps were 1.72 eV,1.47 eV,1.40 eV.TGA measurements indicated that three copolymers had excellent thermal stabilities.

关 键 词：苯并二吡咯酮 苯并二噻吩 Stille缩聚 给体-受体共聚物 光物理性质 合成 性能 

分 类 号：O62[理学—有机化学]