Breaking the concentration quenching limit of lanthanide emitter through multi-coupling of confined quasi-0D & 2D energy migration

作     者：Yuanchao Lei Shanshan Zhou Jianxi Ke Licheng Yu Youchao Wei Yongsheng Liu Maochun Hong 

作者机构：State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Physical Science and Technology Shanghai Tech University Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China 

出 版 物：《Science China Chemistry》 (中国科学:化学(英文版))

年 卷 期：2024年

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：supported by the National Natural Science Foundation of China (92361202, 12204481) the Fund of Fujian Science & Technology Innovation Laboratory for Optoelectronic Information (2020ZZ114, 2022ZZ204) the China Postdoctoral Science Foundation (2023M733498, 2024T170925) the Natural Science Foundation of Fujian Province (2022J05102) the National Key Research and Development Program of China (2022YFB3503704) the Self-deployment Project Research Program of Haixi Institutes, Chinese Academy of Sciences (CXZX-2022-GS01) 

摘      要：The widespread applications of lanthanide-doped materials have fuelled a growing demand for precise control over the luminescence characteristics of these materials. However, the limitation imposed by concentration quenching remains a major obstacle in achieving efficient luminescence from lanthanide-doped materials. Herein, a novel strategy utilizing Sc2O3:Ln3+microflowers to enable confined energy migration in both microscopic quasi-zero-dimensional（0D） and mesoscopic twodimensional（2D） multi-coupling systems is proposed to overcome the concentration quenching limit of lanthanide emitters and achieve a remarkable doping amount of 48.14% on a single particle without resorting to complex core/multishell *** studies reveal that the multi-confinement structure effectively restricts the range of energy migration and significantly reduces excitation energy migration to defects. Based on these highly doped Sc2O3microflowers, full spectrum and power-dependent tunable multi-color lanthanide emission in a single particle is successfully achieved. Furthermore, the 2Dencoded patterns derived from these microflowers hold great promise for anti-counterfeiting applications. Our findings emphasize the multi-coupling of confined quasi-0D & 2D energy migration within a well-designed structure, providing valuable insights into concentration quenching mechanisms. This also opens up new opportunities for multi-level anti-counterfeiting systems and information security.