磷光
咔唑
发光
激发态
荧光
光化学
光致发光
材料科学
卡宾
铜
化学
光电子学
催化作用
有机化学
物理
原子物理学
冶金
量子力学
作者
Jiayi Li,Liding Wang,Zifeng Zhao,Xiaoyue Li,Xiaoqin Yu,Peihao Huo,Qiong‐Hua Jin,Zhiwei Liu,Zuqiang Bian,Chunhui Huang
标识
DOI:10.1002/anie.201916379
摘要
Abstract As a kind of photoluminescent material, Cu I complexes have many advantages such as adjustable emission, variable structures, and low cost, attracting attention in many fields. In this work, two novel two‐coordinate Cu I ‐N‐heterocyclic carbene complexes were synthesized, and they exhibit unique dual emission properties, fluorescence and phosphorescence. The crystal structure, packing mode, and photophysical properties under different conditions were systematically studied, proving the emissive mechanism to be the locally excited state of the carbazole group. Based on this mechanism, ultralong room‐temperature phosphorescence (RTP) with a lifetime of 140 ms is achieved by selective deuteration of the carbazole group. These results deepen the understanding of the luminescence mechanism and design strategy for two‐coordinate Cu I complexes, and prove their potential in applications as ultralong RTP materials.
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