Luminescent mono-and dinuclear copper(I) complexes based on bulky bisphosphino-substituted benzimidazole derivatives,Zeitschrift für anorganische und allgemeine Chemie

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Luminescent mono-and dinuclear copper(I) complexes based on bulky bisphosphino-substituted benzimidazole derivatives
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.1 ) Pub Date : 2021-09-08 , DOI: 10.1002/zaac.202100238
Xiaorui Zi ₁ , Chunmei Liu ₁ , Wen Lu ₁ , Juan Huang ₁ , Jiayuan Zhang ₁ , Bin Zhang ₁ , Chenxia Du ₁

Affiliation

Four mono- and two dinuclear Cu(I) complexes were synthesized based on novel 4-diphenylphosphino-benzimidazole (P^N) derivatives, and their structures as well as photophysical properties were systematically investigated. X-ray crystallographic analysis reveals that the Cu(I) centers adopt pseudo-tetrahedral geometries. All the complexes in powder at 293 K display bright phosphorescence with the highest photoluminescent quantum yield of 37.6 %. The emission maxima could be finely tuned from 514 to 592 nm by the methoxy substituent on the N^P ligands. The combined experimental results at different temperature (293 K and 77 K) and theoretical studies suggest that the nature of the emissive states can be mainly assigned as a dominant charge-transfer character involving major components of ³(M+X) LCT transitions.

中文翻译：

基于庞大的双膦基取代苯并咪唑衍生物的发光单核和双核铜 (I) 配合物

基于新型4-二苯基膦基-苯并咪唑（P^N）衍生物合成了四种单核和双核Cu（I）配合物，并系统研究了它们的结构和光物理性质。X 射线晶体学分析表明 Cu(I) 中心采用伪四面体几何形状。粉末中的所有配合物在 293 K 下都显示出明亮的磷光，最高光致发光量子产率为 37.6%。发射最大值可以通过 N^P 配体上的甲氧基取代基在 514 到 592 nm 之间进行微调。不同温度（293 K 和 77 K）下的组合实验结果和理论研究表明，发射态的性质主要可以归为主要电荷转移特性，涉及³ (M+X) LCT 跃迁的主要成分。

更新日期：2021-11-03

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