Rare earth nanocrystals with enhanced NIR-II luminescence  

稀土纳米晶近红外二区发光增强研究进展

作　　者：Xuan Gao Jing Feng Li Miao Kai Liu Hongjie Zhang 高璇;冯婧;苗莉;刘凯;张洪杰

机构地区：[1]Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education),Department of Chemistry,Tsinghua University,Bejing 100084,China [2]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [3]School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China [4]Department of Stomatology,the Seventh Medical Center of PLA General Hospital,Beijing 100010,China

出　　处：《Science China Materials》2025年第4期947-961,共15页中国科学(材料科学)(英文版)

基　　金：supported by the National Key R&D Program of China(2021YFF0701800 and 2022YFF0710000);the National Natural Science Foundation of China(22020102003,22388101,52372278,and 22125701)。

摘　　要：In recent years,fluorescent materials centered on the second near-infrared(NIR-II)window have emerged as a new research area of interest for prospective biomedical applications.Among the latest generation of NIR-II probes,rare earth nanocrystals(RE NCs)have distinguished themselves by their remarkable optical properties,such as high stability,large Stokes/anti-Stokes shift,a broad excitation spectral bandwidth,and a prolonged fluorescence lifetime.Particularly,via ingenious design and meticulous manipulation of the structure and composition,the energy transfer and photon transition during the luminescence process can be precisely regulated,thereby achieving substantial optimization of optical performance.In this review,we will briefly outline the NIR-II emission mechanism of RE NCs and focus on the luminescence enhancement strategies of the latest advancements,with the intention of furnishing valuable references for research in related fields.近几年来,基于近红外二区(NIR-Ⅱ)的荧光材料及其在生物医药领域的应用成为新的研究热点.在新一代NIR-Ⅱ纳米探针中,稀土纳米晶的NIR-Ⅱ发光表现出稳定性高、斯托克斯位移大、激发光谱带宽、荧光寿命长等优点而备受关注.最突出的特点是,通过对稀土纳米晶进行设计,可精确调控发光过程中的能量转移及光子跃迁,从而大幅提高发光效率.本文以稀土纳米晶为研究对象,以NIR-Ⅱ发光性能为评价指标,全面回顾了近十年来发展的发光增强调控策略,以期为相关领域的研究提供借鉴.

关 键 词：second near-infrared window rare earth nanocrystals luminescence enhancement fluorescent materials NIR-II probe 

分 类 号：O482.31[理学—固体物理]