作　　者： ; ; ; ; ; (常学义）;

机构地区： 华南理工大学材料科学与工程学院

出　　处： 《物理化学学报》 2011年第5期1188-1194,共7页

摘　　要： 聚苯撑乙烯(PPV)类聚合物是优异的发光材料,有望作为全色显示中三基色的材料之一得到应用.我们采用2-溴-1,4-亚二甲苯二乙酯为原料,合成了商品名为Supper Yellow PPV(SYPPV)的苯基取代PPV.中间体、单体和聚合物的结构都通过核磁共振、元素分析进行了表征.SY PPV的吸收峰在434nm,吸收边在510nm,带隙2.44eV.光致发光峰值和电致发光峰值分别在516和552nm.SY PPV的器件性能为:启动电压为2.4V,最大亮度大于49000cd·m-2,最大流明效率为21cd·A-1,显著优于采用老方法合成SY PPV的最大流明效率(16-18cd·A-1). Poly（phenylenevinylene） （PPV） is one of the most efficient electroluminescent conjugated polymers and has the potential to be commercialized as important components in full-color flat panel displays. Here, we report an alternative synthetic route to the commercially available PPV derivative Super Yellow PPV （SY PPV） using 2-bromo-1,4-xylylene diacetate as a novel starting material. The intermediates, monomers, and the polymer were fully characterized by nuclear magnetic resonance （NMR） and elemental analysis. The SY PPV film shows an absorption maximum at 434 nm and an absorption onset at 510 nm with an optical bandgap of ca 2.44 eV. The photoluminescent and electroluminescent maximum of SY PPV are around 516 and 552 nm, respectively. The SY PPV obtained via this new synthetic route exhibits improved electroluminescent properties, a turn on voltage of over 2.4 V, a luminance maximum exceeding 49000 cd·m-2, and a maximum luminous efficiency （LE） of 21 cd·A-1 compared with the SY PPV prepared by the traditional route （16-18 cd·A-1）.

关 键 词： 聚苯撑乙烯 苯基取代聚苯撑乙烯 绿色发光聚合物 聚合物发光二极管 电致发光

领　　域： [理学] [理学]