Effect of substituents on properties of diphenylphosphoryl-substituted bis-cyclometalated Ir(III) complexes with a picolinic acid as ancillary ligand
作者:Hongcui Yu、Chun Liu、Xin Lv、Jinghai Xiu、JianZhang Zhao
DOI:10.1016/j.dyepig.2017.05.056
日期:2017.10
on the photophysical and electrochemical properties of these Ir(III) complexes has been investigated. These Ir(III) complexes exhibit intense emission bands at 455–492 nm and high phosphorescence quantum yields (ΦPL) in a range of 54–64% in CH2Cl2. The phosphorescence oxygen sensing properties of these complexes were studied in solution and in polymer film, and a fast response time and excellent operational
合成并表征了一系列以吡啶甲酸为辅助配体的二苯基磷酰基取代的双环金属化Ir(III)配合物(POFIrpic,4Me-POFIrpic,5Me-POFIrpic,5F-POFIrpic和5CF 3 -POFIrpic)。环金属化配体POFdFppy(2-(2',4'-二氟-3'-二苯基磷酰基)苯基吡啶)吡啶基上的取代基(CH 3,F,CF 3)对这些Ir的光物理和电化学性质的影响(III)配合物已被研究。这些铱(III)配合物表现出在455-492纳米和高磷光量子产率强烈发射带(Φ PL)的CH 2 Cl 2含量在54-64%的范围内。在溶液和聚合物薄膜中研究了这些配合物的磷光氧传感特性,并观察到了快速的响应时间和出色的操作稳定性。两点模型拟合表明5Me-POFIrpic是配合物中最敏感的氧敏感材料,具有淬灭常数ķsv一个pp0.00793 Torr -1。光降解试验表明,将CF 3基团引入