Synthesis and characterization of novel conjugated polymers based on 3-cyclobutene-l,2-dione moiety  

作　　者：Er Fu Huo Yong Zou Hui Qin Sun Yan Huang Zhi Yun Lu Qing Jiang 

机构地区：[1]College of Chemistry Sichuan University, Chengdu 610064, China [2]Analytical ＆ Testing Center, Sichuan University, Chengdu 610064, China

出　　处：《Chinese Chemical Letters》2011年第11期1326-1330,共5页中国化学快报（英文版）

基　　金：the financial supports of the National Natural Science Foundation of China(Nos 50803040 and 20872103)and Analytical & Testing Center of Sichuan University for NMR measurements

摘　　要：Three novel conjugated polymers bearing 3,4-bis（4-hexylthiophen-2-yl）-3-cyclobutene-1,2-dione unit in their main chain have been synthesized successfully in good yields through Suzuki or Stille coupling reaction.Their molecular structures have been confirmed by FT-IR,~1H NMR and ^（13）C NMR.All these copolymers exhibit broad and strong absorption bands in UV-vis region,and their optical band gaps are calculated to be 1.6-2.0 eV.suggesting that they have good coverage with the solar spectrum.These polymers have good thermostability and solubility in common organic solvents.Moreover,all these objective macromolecules possess high electron affinity of～3.8 eV determined from cyclic voltammetry measurement,implying that they are potential n-type polymeric photovoltaic materials.Three novel conjugated polymers bearing 3,4-bis（4-hexylthiophen-2-yl）-3-cyclobutene-1,2-dione unit in their main chain have been synthesized successfully in good yields through Suzuki or Stille coupling reaction.Their molecular structures have been confirmed by FT-IR,~1H NMR and ^（13）C NMR.All these copolymers exhibit broad and strong absorption bands in UV-vis region,and their optical band gaps are calculated to be 1.6-2.0 eV.suggesting that they have good coverage with the solar spectrum.These polymers have good thermostability and solubility in common organic solvents.Moreover,all these objective macromolecules possess high electron affinity of～3.8 eV determined from cyclic voltammetry measurement,implying that they are potential n-type polymeric photovoltaic materials.

关 键 词：Conjugated polymers 3-Cyclobutene-1 2-dione High electron affinity Photovoltaic materials 

分 类 号：O631.24[理学—高分子化学] O623.523[理学—化学]