吡嗪嘧啶铱(Ⅲ)配合物的合成及其磷光材料性质  

Synthesis and phosphorescence of iridium (Ⅲ) pyrazine-pyrimidine complex

作　　者：何静[1] 葛国平[2] 徐凯[1] 郭海清[2] 殷宁[1] 

机构地区：[1]北京林业大学材料科学与技术学院 [2]北京大学化学与分子工程学院

出　　处：《北京林业大学学报》2006年第S2期137-140,共4页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目(20474003;90401028)

摘　　要：该研究采用4-苯基嘧啶(PPY)作为辅助配体合成了新型的配合物(MDPP)2Ir(Cl)PPY(MDPP为5-甲基-2,3-二苯基吡嗪).紫外-可见吸收光谱显示该配合物在475nm处有三重态的金属到配体的电荷跃迁3MLCT吸收峰;该配合物的光致发光光谱中,在558nm处有相应的3MLCT发射峰.该发射峰较用乙酰丙酮(acac)作为辅助配体得到的配合物(MDPP)2Ir(acac)蓝移了22nm,这说明PPY是一类有潜在应用价值的辅助配体,可以用于金属配合物发光颜色的调节.同时,该文还讨论了天然化合物作为有机配体的可行性.A new complex of (MDPP)2Ir(Cl)PPY was synthesized. The UV-Vis absorption spectra of the complex showed 3MLCT (triplet metal to ligand charge transfer) absorption at 475 nm and strong photoluminescence was at 558 nm at room temperature, suggesting its potential application in organic light emitting device (OLED) as a promising phosphorescent material. Compared with complex (MDPP)2Ir(acac), (MDPP)2Ir(Cl)PPY showed a 22 nm blue shift in photoluminescence. This result suggests that PPY is an effective auxiliary ligand in adjusting the luminescence color of the complex. The feasibility for some natural compounds as auxiliary ligand was also discussed.

关 键 词：OLED用磷光材料 4-苯基嘧啶 重金属配合物 天然化合物 

分 类 号：O641.4[理学—物理化学]