摘要
设计并合成了两个不同烷氧基增溶的结构新颖的含氟聚苯撑乙烯Pa,Pb和共聚物Pc.通过核磁共振和元素分析对其结构进行了表征,通过热重分析、凝胶色谱测定了其热分解温度和分子量及分布;紫外-可见吸收光谱仪和荧光分光光度计测得其吸收-发射光谱.测量发现热失重曲线拐点温度超过400℃.由2-乙基己基增溶的Pa和Pc具有优异的溶解性,固态荧光发射波长分别为499和585nm,相应比PPV和MEH-PPV稍有蓝移.应用旋转涂膜的方法制作Pa和Pc的双层器件(ITO/PEDOT/Polymer/Ba/Al),电致发光波长分别为494和604nm,器件均具有较低的启动电压(4V左右),分别在24和15V时达到最大亮度598和203cd?m-2,而此时电流密度分别为100和80mA?cm-2.
Synthesis and electroluminescence performance of three novel poly（phenylene vinylene） （PPV） derivates containing electron withdrawing fluorine atom and twisted terphenyl were reported. The structures of the polymers were characterized and determined by IH NMR, 13C NMR and elemental analysis. Due to fluorine atom and terphenyl structure, these polymers are thermally stable with decomposition temperature of about 400 ℃. The peaks of the solid-state photoluminescence （PL） of Pa and Pc are 499 and 585 nm, respectively. They were blue-shifted compared to those of PPV and MEH-PPV, respectively, which was attributed to their twisted terphenyl structure. The double-layer devices （ITO/PEDOT/Polymer/Ba/Al） were fabricated. They held low onset voltage （about 4 V）. The peaks of electroluminescence （EL） were 494 and 604 nm, and then their maximum brightness values were 598 cd·m^-2 （24 V, 100 mA·cm^-2） and 203 cd·m^-2 （15 V, 80 mA·cm^- 2）, respectively. These resulting polymers are promising materials for OLED.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2006年第24期2509-2514,共6页
Acta Chimica Sinica
基金
国家自然科学基金(Nos.60325412
90406021
60537030
20504007和50428303)
上海市科学技术基金(Nos.03DZ11016
04XD14002)
上海市教育委员会与上海市教育发展基金(No.03SG03)资助项目.
关键词
聚苯撑乙烯
共轭聚合物
氟
合成
有机电致发光器件
poly（p-phenylene vinylene）
conjugated polymer
fluorine
synthesis
organic light-emitting device
