新型三重态吡嗪铱（Ⅲ）配合物的微波合成及其发光性质

Microwave Assisted Synthesis of a New Triplet Iridium（Ⅲ） Pyrazine Complex

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.