Guo Yan, Chen Kaijun, Hu Zechen, Lei Yunxiang, Liu Xiaoqing, Liu Miaochang, Cai Zhengxu, Xiao Jiawen, Wu Huayue, Huang Xiaobo
College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China.
School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 10081, P.R. China.
J Phys Chem Lett. 2022 Aug 18;13(32):7607-7617. doi: 10.1021/acs.jpclett.2c02057. Epub 2022 Aug 11.
The construction of multicomponent doped systems is an important direction for the development of phosphorescence materials. Herein, benzophenone is selected as the host, phenylquinoline isomers are designed as guests, and seven metal ions are selected as the third component (Al, Cu, Zn, Ga, Ag, Cd, and In) to construct the three-component doped system. Ag and Cd can considerably increase the emission intensity up to 38 times, and the highest phosphorescence quantum efficiency reaches 70%. Al, Ga, and In can prolong the emission wavelength, and the phosphorescence wavelength can be red-shifted up to 60 nm. Cu, Ga, and In can extend the phosphorescence lifetime by a maximum of 3.6 times. A series of experiments demonstrated that the coordination of metals and guests is the key to improve the phosphorescence properties. This work presents a simple and effective strategy to enhance the phosphorescence properties of doped materials.
多组分掺杂体系的构建是磷光材料发展的一个重要方向。在此，选择二苯甲酮作为主体，设计苯基喹啉异构体作为客体，并选择七种金属离子作为第三组分（铝、铜、锌、镓、银、镉和铟）来构建三组分掺杂体系。银和镉可将发射强度显著提高至38倍，最高磷光量子效率达到70%。铝、镓和铟可延长发射波长，磷光波长可红移高达60 nm。铜、镓和铟可将磷光寿命延长最多3.6倍。一系列实验表明，金属与客体的配位是改善磷光性能的关键。这项工作提出了一种简单有效的策略来增强掺杂材料的磷光性能。
