Rational Design of Strongly Blue-Emitting Cuprous Complexes with Thermally Activated Delayed Fluorescence and Application in Solution-Processed OLEDs
作者:Xu-Lin Chen、Rongmin Yu、Qi-Kai Zhang、Liu-Jiang Zhou、Xiao-Yuan Wu、Qing Zhang、Can-Zhong Lu
DOI:10.1021/cm4024309
日期:2013.10.8
2-pyridyl pyrazolate diimine ligands [Cu(pypz)(POP)]BF4 (1), [Cu(pympz)(POP)]BF4 (2), and [Cu(pytfmpz)(POP)]BF4 (3) (pypz = 1-(2-pyridyl)pyrazole, pympz = 3-methyl-1-(2-pyridyl)pyrazole, and pytfmpz = 3-trifluoromethyl-1-(2-pyridyl)pyrazole) have been designed and synthesized. Their structural, electrochemical, and photophysical properties have been characterized. The complexes 1–3 exhibit high photoluminescence
一个新的系列的强的蓝绿色到蓝色发光的Cu(NN)(POP)+(POP =双[2-(dipenylphosphino)苯基]醚)含有N-连接的2-吡啶基吡唑特二亚胺配体的[Cu(上pypz)络合物( POP)] BF 4(1),[Cu(pympz)(POP)] BF 4(2)和[Cu(pytfmpz)(POP)] BF 4(3)(pypz = 1-(2-吡啶基)吡唑,已经设计并合成了pympz = 3-甲基-1-(2-吡啶基)吡唑和pytfmpz = 3-三氟甲基-1-(2-吡啶基)吡唑)。已经表征了它们的结构,电化学和光物理性质。配合物1 - 3在室温下,无论是在氮饱和的CH 2 Cl 2(高达45%)还是在纯净的固体(高达87%)中,均表现出高的光致发光量子产率(PLQYs),这与所报道的亚铜配合物的最高值相当。光谱性质和发射衰减行为的温度依赖性揭示了两个热平衡发射态的存在。在低于150