Cationic Iridium(III) Complex Containing both Triarylboron and Carbazole Moieties as a Ratiometric Fluoride Probe That Utilizes a Switchable Triplet-Singlet Emission
作者:Wen-Juan Xu、Shu-Juan Liu、Xin-Yan Zhao、Shi Sun、Shan Cheng、Ting-Chun Ma、Hui-Bin Sun、Qiang Zhao、Wei Huang
DOI:10.1002/chem.201000362
日期:2010.6.25
This complex displayed highly efficient orange‐red phosphorescent emission with an emission peak of 583 nm and quantum efficiency of Φ=0.30 in dichloromethane at room temperature. The binding of fluoride ions to [Ir(Bpq)2(CzbpyCz)]PF6 can quench the phosphorescent emission from the IrIII complex and enhance the fluorescent emission from the N^N ligand, which corresponds to a visual change in the emission
一种新的阳离子的Ir III配合物[Ir(BPQ)2(CzbpyCz)] PF 6(BPQ = 2- [4-(dimesitylboryl)苯基]喹啉,CzbpyCz = 5,5'-双(9-己基- 9 ħ咔合成了同时含有三芳基硼和咔唑基团的−3-yl)-2-2,2'-联吡啶)。[Ir(Bpq)2(CzbpyCz)] PF 6的激发态性质通过紫外/可见吸收和光致发光光谱以及分子轨道计算进行了研究。该复合物在室温下在二氯甲烷中显示出高效的橙红色磷光发射峰,发射峰为583 nm,量子效率为Φ = 0.30。氟离子与[Ir(Bpq)2(CzbpyCz)] PF的结合6可以淬灭Ir III配合物的磷光发射并增强N ^ N配体的荧光发射,这对应于从橙红色到蓝色的发射的视觉变化。因此,可以实现比色和比例氟化物感测。有趣的是,在可见光区域观察到了异常强烈的吸收带。和F的检测-离子也可以用可见光作为激发波长