位阻型芴基发光材料的设计、合成及其应用-信息材料专业论文.docx

件。本文以喹啉/螺-9,9-氧杂蒽双极性分子为主体分别制备了红绿蓝三基色磷光器件，其最大外量子效率分别为 9.1％、6.3％和 0.21％。3. 含 Ir(III)的三维有机金属螺环磷光材料的合成及光电性质研究 本文设计合成了 2-(2-吡啶基)-9,9-螺-氧杂蒽芴(PySFX)和 9-羟基-9-(2-吡啶基)芴(PyFOH)两种不同的有机配体。构筑了两种不同螺环功能化的磷光铱(III)配合物、金属螺环配合物(PySFX)2Ir(PyFO)和螺环功能化的配合物(PySFX)2Ir(acac)， 并对其结构进行了核磁表征（氢谱和碳谱），对其分子轨道使用 TDDFT 方法进 行密度泛函计算，从理论上研究了分子前线轨道与结构之间的关系。通过 TGA 和 DSC 曲线对其热稳定性和形貌稳定性进行了表征和分析，考察螺环功能化对 其热稳定性和玻璃化转变温度的影响，并对其光谱和电化学及性质进行了考察和 分析，研究这两种不同螺环有机金属磷光材料的光学性质与结构间的相互关系。4. 含铂(II)的三维螺环材料的合成及光电性质研究 本文将金属螺环引入到铂(II)配合物中有望能够有效阻止分子间相互作用以制备高性能器件，大体积金属螺环能够有效控制 Pt-Pt 间相互作用，从而抑制二聚体发光。设计合成了螺-9,9-氧杂蒽功能化的铂(II)配合物，利用其螺环配体和 金属螺环的超分子位阻效应，得到电流效率为 16.0 cd/A 和最大外量子效率为 5.2％的橘黄色电致发光器件。 关键词：主体材料、客体材料、有机发光二极管、双极性分子、磷光、位阻AbstractOrganic light-emitting diodes (OLEDs) have attracted increasing attentions for their application as flat-panel displays and solid-state lighting technology since the seminal works first reported by Tang and his co-workers, due to their light weights, wide-viewing angles, high contrast, wide and cheap raw material source, self-emission properties, flexible large-area, fast response times, and so on. Many phosphorescent and fluorescent emitters based devices have been developed to meet the demands of full-color display. Moreover, the phosphorescent organic light-emitting diodes (PhOLEDs) are of great interest to achieve high performance device due to their 100% internal quantum efficiency in theory caused by heavy metals. To fabricate high-efficiency devices, two key approachs are necessary, one is to explore high-performance phosphorescent emitters; the other is to synthesize suitable host materials. In this paper, a series of 9-(pyridine-2-yl)-9H-fluoren-9-ol and spiro[fluorene-9,9-xanthene] derivatives based host and phosphorescent guest materials have synthesized successfully to produce high performance devices.The synthesis, photophysical and electrical properties research of light-emitting materials based on 9-(pyridine-2-yl)-9H-fluoren-9-ol through Friedel-Crafts Reaction to build host materials9