羟乙基聚芴材料合成与表征

Synthesis and characterization of hydroxyethyl fluorene-based polymer

以2,7-二溴-9,9-二(2-羟乙基)-芴和2,7-双硼酸酯-(9,9-二辛基芴)为单体,通过Suzuki聚合反应合成一种蓝光聚(9,9-二羟乙基-2,7-芴)-2,7-(9,9-二辛基芴)(PFOH),采用1HNMR和热重分析对其进行表征,PFOH聚合物具有良好的热稳定性,通过紫外-可见吸收光谱(UV-vis)、光致发光光谱(PL)表征了聚合物的光物理性能,采用循环伏安法通过计算得知聚合物PFOH光学带隙Eg为2.90eV,EHOMO=-5.46eV,ELOMO=-2.56eV。

A blue light polymer poly （ 9,9-dihydroxyethyl 2,7-fluorenyl） 2,7-（9,9-dioctylfluorene） （PFOH） was prepared by Suzuki coupling reaction with 2,7-dibromo 9,9-his （2-hydroxyethyl）-fluorene and 2,7 bis （dioxaborolan）- （9,9 dioctylfluorene） as monomer. The structure of PFOH and 2,7-dibromo 9,9-his （2-hydroxyethyl）-fluorene was characterized by 1H NMR and TGA analysis indicating favorable thermal stability,the electrochemical properties of PFOH were measured by cyclic voltammetry and the photophysical properties of the polymer was characterized by UV visible absorption spectroscopy （UV-vis）and photoluminescence （PL）spectrum. Optical band gap Eg of PFOH was calculated to be 2.90eV by UV-vis absorption onset, with EHOMO = -5. 46eV, ELOMO =-2. 56eV.