Development of Highly Performed Organic Display Devices

为了开发高性能的有机显示器件，我们研究了含有垂坠寡硫吩的新型聚合物的合成和电致变色性能，以及使用新型非晶态分子材料的有机电致发光器件的制备和性能。我们合成了含有结构明确的垂坠式低硫噻吩的新型乙烯基和甲基丙烯酸酯均聚物，以及含有垂坠式低硫噻吩和低氧乙烯基的新型甲基丙烯酸酯共聚物。这些聚合物构成了一类新型的潜在电致变色材料，在电化学掺杂和脱掺杂过程中发生了可逆的透明颜色变化。甲基丙烯酸酯共聚物的显色和脱色反应时间比甲基丙烯酸酯均聚物有所改善。我们设计并合成了具有高玻璃化转变温度的新型pi-电子星爆分子，并利用这些新型非晶分子材料开发了热稳定的有机电致发光器件。此外，我们还开发了一种新型的蓝色发光材料，三（对terphenyl-4-yl）胺，以及蓝色发光的有机EL器件。我们发现，固定电子输运材料与具有不同电离势的空穴输运材料结合，可以利用激络合物的形成来调整发射颜色。我们设计并合成了一个含有寡硫吩片段的新型偶联分子家族，并发现电致发光的颜色可以通过改变寡硫吩片段的偶联长度来控制。

For the purpose of developing organic display devices with high performances, we have investigated the synthesis and electrochromic properties of new polymers containing pendant oligothiophenes, and fabrication and performances of organic electroluminescent (EL) devices using novel amorphous molecular materials.We have synthesized new vinyl and methacrylate homopolymers containing pendant oligothiophenes with well-defined structures and new methacrylate copolymers containing pendant terthiophene and oligoethyleneoxide moieties. These polymers were found to constitute a novel class of potential electrochromic materials, undergoing a reversible clear color change on electrochemical doping and dedoping. It was also found that the response times for coloration and decoloration improve for the methacrylate copolymers are than for the methacrylate homopolymer.We have designed and synthesized novel pi-electron starburst molecules with high glass-transition temperatures, and developed thermally stable organic EL devices using these novel amorphous molecular materials. In addition, we have developed a novel blue-emitting meterial, tri(p-terphenyl-4-yl) amine, and blue-emitting organic EL devices. We found that the emission color can be tuned by using exciplex formation for a fixed electron-transport material in combination with holetransport materials with varying ionization potentials. We have designed and synthesized a novel family of pi-conjugated molecules containing an oligothiophene moiety and found that the electroluminescence color can be controlled by varying the conjugation length of the oligothiophene moiety.