Abstract
本發明係提供一合成以高陰電性雜環官能基團(如噁二唑(oxadiazole)、噻二唑(thiadiazole)、三唑(triazole))改質之新型螢光性共軛高分子的方法，經由單體改質的方式，首先合成出具有高陰電性基團取代之二(鹵甲烷基)芳香族(bis(halomethyl) arene)單體(包含雜環芳香族)，它可經由偉斯林前驅體法、吉爾克反應法、偉提許反應法或偉提許-賀納反應法聚合而得高螢光性之均一聚合體(homopolymer)、統計共聚合體(statistical copolymer)或嵌段共聚體(block copolymer)。聚合時經由單體的選擇可得共軛及特定共軛鏈長度之聚合體及各種涵蓋可見光區甚至到近紅外光區之發光材料。所得之螢光性高分子可作為發光層或電子傳遞層，製作出單層或多層之高亮度高分子發光二極體。本發明所製得之發光二極體可應用於指示器及各種顯示器例如行動電話、呼叫器、筆記型電腦、腕表及玩具等。
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.