文献类型：期刊文献

英文题名：A facile ligand engineering strategy to achieve ultra-highly efficient afterglow luminescence of ordinary metal salts

作者：Liang, Li Ya[1];Wang, Xiao Yuan[1];Gao, Ya Ting[1];Wu, Da Jun[1];Li, Da Wei[1,2];Chen, Bin Bin[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Adv Mat,Shanghai Key Lab Funct Mat Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2025

卷号：68

期号：10

起止页码：4796

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20251718302424);WOS:【SCI-EXPANDED(收录号:WOS:001475708000001)】；

基金：This work was supported by the National Natural Science Foundation of China (22176058), the Science and Technology Commission of Shanghai Municipality (24DX1400200, 22ZR1416800, 23ZR1416100), the Program of Introducing Talents of Discipline to Universities (B16017), and the Fundamental Research Funds for the Central Universities (222201717003). We thank the Research Center of Analysis and Test of East China University of Science and Technology for help with the characterization.

语种：英文

外文关键词：aluminum sulfate; afterglow luminescence; ligand engineering; light emitting devices; ethylene glycol recognition

摘要：Ordinary metal salts have become a promising afterglow material because of the characteristics of wide sources, low cost, and easy availability. However, their extremely weak afterglow efficiency makes them rarely used in practical applications. In this study, we proposed a ligand engineering strategy to greatly enhance the afterglow efficiency of metal salts. Al2(SO4)3, as a typical metal salt, has only a photoluminescence quantum yield (PL QY) as low as 0.1% and an unmeasurable phosphorescent QY. After doping with dual organic ligands, the PL QY of Al2(SO4)3 has increased by nearly 200 times, reaching 19.90%. Meanwhile, the afterglow intensity of Al2(SO4)3 has increased by approximately 20 times, accompanied by a great increase in phosphorescent lifetime from 416.15 to 2870.08 ms (a about 7-time increase). The enhancement mechanism of afterglow efficiency is ascribed to the fact that the excited electrons from the dual ligands can be directly captured by oxygen defects (trap), then transferred to the emitters (Al3+ ions), and ultimately achieving efficient afterglow luminescence. This study utilizes ligand engineering strategy to improve the afterglow luminescence efficiency of metal salts, achieving their applications in deep ultraviolet (UV)-excited light emitting devices and visual ethylene glycol recognition.