作者:Minji Kim、Min Hyung Lee
DOI:10.1016/j.jorganchem.2018.06.010
日期:2018.9
(2-MeCB = 2-methyl-o-carboran-1-yl; dfppy = 2-(4,6-difluorophenyl)pyridinato-C2,N; LX = picolinate (5a) or tetrakis(1-pyrazolyl)borate (5b)), with o-carborane at the 5-position of the phenyl ring of the dfppy ligand were prepared to investigate the impact of the o-carborane cage on the blue phosphorescence of complexes. X-ray diffraction analysis of 5a revealed a distorted octahedral coordination geometry around
杂环金属铱(III),[5-(2-MeCB)dfppy] 2 Ir(LX)(2-MeCB = 2-甲基-o -carboran-1-yl; dfppy = 2-(4,6-二氟苯基)吡啶吡啶-C 2,N; LX =吡啶甲酸(5a)或四(1-吡唑基)硼酸(5b)),在dfppy配体的苯环的5位带有邻-碳硼烷,以研究该Ø -carborane笼上复合的蓝色磷光。5a的X射线衍射分析显示,铱中心周围的八面体配位几何结构扭曲,dfppy配体被外围碳硼烷取代。5a和5a的吸收和发射带图5b分别hypsochromically相对于那些天蓝的移位(dfppy)2的Ir(PIC)(FIrpic的)复合物,导致深蓝色磷光(λ PL 为= 459纳米5A和452纳米5b中相对于468纳米为FIrpic的)。复合物显示出高至适中的量子效率在甲苯(Φ PL = 0.89为图5a ; 0.47 5B)和PMMA薄膜(Φ