一种新型阳离子铱配合物的合成、晶体结构及光物理性能测试

Synthesis, crystal structure and light-physical property of a novel cationic iridium (Ⅲ) complex

摘要: 以2−（对甲苯基）吡啶为环金属主配体，4，4′−二叔丁基−2，2′−联吡啶为辅助配体，合成出了一种新型阳离子型铱配合物Ir（mppy）₂（dtbbpy）PF₆（mppy=2−（对甲苯基）吡啶，dtbbpy=4，4′−二叔丁基−2，2′−联吡啶）. 其结构通过元素分析、核磁共振谱、质谱、红外光谱进行了表征，并测试了单晶结构. 研究了其光物理性能，同时考察了它的热稳定性. 结果表明，配合物为单斜晶系、P121/c1空间群；它在二氯甲烷溶液中为黄绿光发射，最大发射波长为566 nm.

Abstract: A new cationic iridium (Ⅲ) complex: Ir(mppy)₂(dtbbpy)PF₆ (mppy=2−(4−methylphenyl) pyridine, dtbbpy=4, 4′−ditert-butyl−2, 2′−bipyridine) was successfully synthesized with pyridine compound as cyclometalated ligand and 4, 4′−ditert-butyl−2, 2′−bipyridine as auxiliary ligands. Its structure was characterized by elemental analysis, NMR (¹H and ¹³C), MS and FT−IR, and the structure of single crystal was tested. Photophysical property of this complex and its thermal stability were investigated. The results show that the complexes were monoclinic crystal system and P121/c1 spatial group. A strong yellow-greenemission at 566 nm was observed in photoluminescence absorption spectra of the compound.