The synthesis of fluorescent nanoclusters based on the etching reaction  

作　　者：Hongbin Lin Yitao Cao Qiaofeng Yao Tiankai Chen Huiting Shan Jianping Xie 

机构地区：[1]Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou 350207,China [2]Department of Chemical and Biomolecular Engineering,National University of Singapore,Singapore 117585,Singapore [3]National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs,Engineering Research Center of MTEES(Ministry of Education),and Key Laboratory of ETESPG(GHEI),South China Normal University,Guangzhou 510006,China [4]Tianjin Key Laboratory of Molecular Optoelectronic Sciences,Key Laboratory of Integrated Organic Circuits,Ministry of Education,Department of Chemistry,School of Science,Tianjin University,Tianjin 300072,China

出　　处：《Nano Research》2024年第5期4631-4638,共8页纳米研究（英文版）

基　　金：support from the National Natural Science Foundation of China(No.22071174);the Ministry of Eduction,Singapore(Academica Research Grant,Nos.R-279-000-538-114,R-279-000-580-112).

摘　　要：Thiolate-protected atomically precise nanoclusters(NCs)demonstrate a series of unique luminescent characteristics attributed to their various peculiar electronic structures.Therefore,fluorescent NCs present extraordinary practical values in biosensing and bioimaging research fields.Nevertheless,restricted by the types of fluorescent NCs,there are great difficulties in promoting the development of NCs in fluorescent research areas.As a result,it is of significant necessity for researchers to develop new synthetic pathways to produce high-quality fluorescent NCs.According to the analysis about the structural characteristics of fluorescent NCs,some general features like longer motif and higher ligand-to-metal ratio can be found,consistent to some presented regularities in etching reaction.Consequently,in this work,we used Au_(25)(MHA)_(18)(MHA=6-mercaptohexanoic acid)as a model nanocluster and utilized the etching reaction to systematically explore etching products and their corresponding luminescent properties.Moreover,we also identified three main reaction processes in the entire etching reaction process,which can generate new metal nanocluster species with various fluorescent properties.Hence,the etching reaction will provide a good platform to produce new luminescent metal NC species.

关 键 词：etching reaction metal nanoclusters fluorescent properties fluorescent conversion 

分 类 号：O62[理学—有机化学]