摘要
采用微波辅助加热方法,2,3-二苯基吡嗪(DPP)与水合三氯化铱(IrCl3·3H2O)反应制备了[Ir(DPP)3],通过^1HNMR、元素分析和质谱方法对配合物结构进行了表征,并研究了配合物的吸收光谱和光致发光光谱.结果表明,配合物Ir(DPP)3在382和504nm处存在单重态^1MLCT(金属到配体的电荷跃迁)和三重态^3MLCT的吸收;在573nm处有较强的金属配合物三重态的磷光发射.
A new cyclometalated iridium(IlI) complex Ir(DPP)3 (DPP=2,3-diphenylpyrazine) was prepared by reaction of DPP with iridium trichloride hydrate under microwave irradiation. The structure of the complex was confirmed by elemental analysis, ^1H NMR, and mass spectroscopy. The UV-Vis absorption and photoluminescent properties of the complex were investigated. The complex shows strong ^1MLCT (singlet metal to ligand charge-transfer) and aMLCT (triplet metal to ligand charge-transfer) absorption at 382 and 504 nm, respectively. The complex also shows strong photoluminescence at 573 nm at room temperature. These results suggest the complex to be a promising phosphorescent material.
关键词
微波合成
磷光材料
吡嗪铱配合物
三重态
Microwave-assisted synthesis, Phosphorescent material, Iridium pyrazine complex, Triplet