Electroluminiscent conjugated polymers modified with high eletronegative heterocyclic moieties and their applications in polymeric light emitting diodes
申请人:National Science Council Taiwan corporation
公开号:US20030109656A1
公开(公告)日:2003-06-12
This invention provides a method for syntheses of new electroluminescent conjugated polymers modified with high electronegative heterocyclic groups (such as 1,3,4-oxadiazole-diyl, 1,3,4-thiadiazole-diyl, and 1,2,4-triazole-diyl). These electroluminescent polymers (homopolymers, statistical copolymers or block coplymers) are obtained by polymerization of bis(halomethyl) arenes modified with heterocyclic groups via the Wessling precursor route, Gilch side chain route, Wittig reaction or Wittig-Hornor reaction. By a proper selection of the monomers and their ratios in the polymerization, the emissive polymers (fully conjugated or limited conjugating length) covering the full visible range even extending to the near-IR range can be prepared. The polymeric light emitting diodes (PLED) with these materials as emissive layer or electron transport layer have high external quantum efficiency and can be used as indicators and displays for cellular phones, pagers, portable computer, wristwatch, toys, etc.
本发明提供了一种合成新型电致发光的共轭聚合物的方法,其经过修饰的含有高电负性杂环基团(如1,3,4-噁二唑-二基基团、1,3,4-噻二唑-二基基团和1,2,4-三唑-二基基团)。这些电致发光聚合物(同聚物、随机共聚物或嵌段共聚物)是通过通过Wessling前驱体路线、Gilch侧链路线、Wittig反应或Wittig-Hornor反应修饰的双(卤甲基)芳烃聚合而成。通过适当选择单体和它们在聚合中的比例,可以制备出发射聚合物(完全共轭或有限共轭长度),其覆盖整个可见光范围,甚至延伸到近红外范围。使用这些材料作为发射层或电子传输层的聚合物发光二极管(PLED)具有高外部量子效率,可以用作手机、寻呼机、便携式计算机、手表、玩具等的指示器和显示器。