Electroluminiscent conjugated polymers modified with high electronegative heterocyclic moieties and their applications in polymeric light emitting diodes
申请人:National Science Council
公开号:US06495644B1
公开(公告)日:2002-12-17
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共轭聚合物的方法,该共轭聚合物经过高电负性杂环基团(如1,3,4-噁二唑基,1,3,4-噻二唑基和1,2,4-三唑基)修饰。通过Wessling前体路线、Gilch侧链路线、Wittig反应或Wittig-Hornor反应,通过对带有杂环基团的双(卤甲基)芳烃进行聚合,可以获得这些电致发光聚合物(同聚物、统计共聚物或嵌段共聚物)。通过在聚合中适当选择单体及其比例,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)具有高的外量子效率,可用作手机、寻呼机、便携式计算机、手表、玩具等的指示器和显示器。