铱金属配合物由于金属铱与配体之间具有强烈的相互作用,致使产生强烈的自旋-轨道偶合,使原有禁阻的三重态跃迁变为允许,进而实现强的磷光发射,可以提高器件的发光效率,是一类高效电致磷光材料本文以水合三氯化铱和2-苯基吡啶为初始原料,在乙二醇单乙醚溶剂中反应得到铱的氯桥二聚体(ppy)2 Ir(μ-Cl2)Ir(ppy)2,然后在碱性条件下和乙酰丙酮反应合成出高效磷光材料乙酰丙酮酸二(2-苯基吡啶)铱Ir(ppy)2(acac),合成产率大于90％,纯度为99.54％,该方法适于Ir(ppy)2 (acac)的批量制备.通过核磁共振谱(1H NMR,13C NMR)、质谱(MS)、红外光谱(FT-IR)和单晶X射线衍射(XRD)等表征手段确定了分子结构,用高效液相色谱法(HPLC)测试了纯度,利用紫外-可见光(UV-Vis)吸收光谱和光致发光光谱仪(PL)对其光物理性能进行了测试.结果表明:Ir(ppy)2 (acac)为电中性八面体配合物,Ir-0键的平均长度为0.2173(6) nm,而Ir-C键的平均长度0 1982(8) nm,Ir-N键的平均长度为0.2035(8) nm,在519 nm处出现了较强的绿光发射.
参考文献
| [1] | Chihaya Adachi;Raymond C. Kwong;Peter Djurovich;Vadim Adamovich;Marc A. Baldo;Mark E. Thompson;Stephen R. Forrest .Endothermic energy transfer: A mechanism for generating very efficient high-energy phosphorescent emission in organic materials[J].Applied physics letters,2001(13):2082-2084. |
| [2] | Ma YG.;Shen JC.;Che CM.;Zhang HY. .Electroluminescence from triplet metal-ligand charge-transfer excited state of transition metal complexes[J].Synthetic Metals,1998(3):245-248. |
| [3] | Ying-Ju Su;Heh-Lung Huang;Chien Le Li;Chin-Hsiung Chien;Yu-Tai Tao;Pi-Tai Chou;Swarup Datta;Rai-Shung Liu .Highly Efficient Red Electrophosphorescent Devices Based on Iridium Isoquinoline Complexes; Remarkable External Quantum Efficiency Over a Wide Range of Current[J].Advanced Materials,2003(11):884-888. |
| [4] | Sergey Lamansky;Peter Djurovich;Draw Murphy;Feras Abdel-Razzaq;Hae-Eun Lee;Chihaya Adachi;Paul E. Burrows;Stephen R. Forrest;Mark E. Thompson .Highly Phosphorescent Bis-Cyclometalated Iridium Complexes: Synthesis, Photophysical Characterization, and Use in Organic Light Emitting Diodes[J].Journal of the American Chemical Society,2001(18):4304-4312. |
| [5] | Baranoff E;Suarez S;Bugnon P;Barolo C;Buscaino R;Scopelliti R;Zuppiroli L;Graetzel M;Nazeeruddin MK .Sublimation not an innocent technique: A case of bis-cyclometalated iridium emitter for OLED[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,2008(15):6575-6577. |
| [6] | You Y;Park SY .Phosphorescent iridium(III) complexes: toward high phosphorescence quantum efficiency through ligand control[J].Dalton transactions: An international journal of inorganic chemistry,2009(8):1267-1282. |
| [7] | 蔡宏中,易健宏,魏巧灵,陈力,魏燕,胡昌义.反应气体流量对CVD钽性能影响研究[J].稀有金属,2013(06):909-914. |
| [8] | 赵强,李富友,黄春辉.基于磷光发射的有机电致白光器件的研究进展[J].化学进展,2006(05):526-532. |
| [9] | 张小伟,杨楚罗,秦金贵.金属有机电致磷光材料研究进展[J].有机化学,2005(08):873-880. |
| [10] | 章瑞铄,刘涌,滕繁,宋晨路,韩高荣.锐钛矿相和金红石相TiO_2：Nb的光电性能研究[J].物理学报,2012(01):392-396. |
| [11] | 常桥稳,崔浩,晏彩先,姜婧,赵婧,情青松,余娟,刘伟平,陈家林.β-二酮配体结构对铂族金属磷光配合物发光性能的影响[J].贵金属,2014(03):88-93. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%