Poly(aryl ether)s containing ter- and pentafluorene pendants for efficient blue light emission
Poly(aryl ether)s containing ter- and pentafluorene pendants for efficient blue light emission
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含有三芴和五芴侧链的聚（芳基醚）可实现高效蓝光发射
DOI：
10.1021/ma052282z
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发表时间：
2006-01
期刊：
影响因子：
5.5
通讯作者：
Xie, ZY
中科院分区：
文献类型：
--
作者：
Yao, B;Jin, XB;Wang, LX;Geng, YH;Jiang, GX;Wang, FS;Cheng, YX;Xie, ZY
四种新型热稳定聚芳醚，设计并合成了在侧链中含有三芴或五芴单元的P3 F、P5 F、P2 A3 F和P2 A5 F，用于高效蓝光发射。所有的聚合物显示出相同的相应的单体的光学性能，并具有较高的玻璃化转变温度（Tg）比它们的单体对应物的无定形。制备了ITO/（PEDOT：PSS）/polymer/Ca/Al结构的聚合物发光二极管（PLED），在聚合物发光二极管的末端引入二苯胺基团，显著降低了PLED的空穴注入势垒。基于P2 A3 F和P2 A5 F的器件在300 cd/m2的亮度下显示出1.2和2.0 cd/A的发光效率，国际照明委员会（CIE）坐标分别为（0.15，0.13）和（0.19，0.20）。这些结果表明，采用传统的缩聚方法可以合成高性能的发光聚合物。
Four novel thermally stable poly(aryl ether)s, e.g., P3F, P5F, P2A3F, and P2A5F, containing ter- or pentafluorene units in the side chains for efficient blue light emission have been designed and synthesized. All the polymers show the optical properties identical to the corresponding monomers and are amorphous with higher glass transition temperature (Tg) than their monomeric counterparts. The polymer light-emitting diodes (PLEDs) were fabricated with the device structure of ITO/(PEDOT:PSS)/polymer/Ca/Al. The incorporation of diphenylamine group to oligofluorene terminals significantly reduces the hole-injection energy barrier in PLEDs. The devices based on P2A3F and P2A5F show the luminous efficiencies of 1.2 and 2.0 cd/A at a brightness of 300 cd/m2 with the Commission Internationale de L'Eclairage (CIE) coordinates of (0.15, 0.13) and (0.19, 0.20), respectively. All these indicate that the high-performance light-emitting polymers can be synthesized with the traditional condensation polymerization throu...