In-situ generation and global property profiling of metal nanoclusters by ultraviolet laser dissociation-mass spectrometry  

作　　者：Zheyi Liu Zhaoxian Qin Chaonan Cui Zhixun Luo Bing Yang You Jiang Can Lai Zhipeng Wang Xiaolei Wang Xiang Fang Gao Li Fangjun Wang Chunlei Xiao Xueming Yang 

机构地区：[1]State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China [2]CAS Key Laboratory of Separation Sciences for Analytical Chemistry,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China [3]State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China [4]State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,China [5]Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China [6]National Institute of Metrology,Beijing,100013,China [7]University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Science China Chemistry》2022年第6期1196-1203,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (32088101, 21872145 and 22172167);the Original Innovation Project of CAS (ZDBS-LY-SLH032);Chinese National Innovation Foundation (18-163-14-ZT-002-001-02);the grant from DICP (DICP I202007)。

摘　　要：Metal nanoclusters are promising nanomaterials with unique properties, but only a few ones with specific numbers of metal atoms can be obtained and studied up to now. In this study, we establish a new paradigm of in-situ generation and global study of metal nanoclusters with different sizes, constitutions, and charge states, including both accurate constitution characterization and global activity profiling. The complex mixtures of metal nanoclusters are produced by employing single-pulsed 193-nm laser dissociation of monolayer-protected cluster(MPC) precursors within a high-resolution mass spectrometry(HRMS). More than400 types of bare gold nanoclusters including novel multiply charged(2+ and 3+), S-/P-doped, and silver alloy ones can be efficiently generated and accurately characterized. A distinct size(1 to 142 atoms)-and charge(1+ to 3+)-hierarchy reactivity is clearly observed for the first time. This global cluster study might greatly promote the developments and applications of novel metal nanoclusters.

关 键 词：metal nanocluster ultraviolet laser dissociation mass spectrometry global property profiling size-and charge-hierarchy 

分 类 号：O657.63[理学—分析化学] TB383.1[理学—化学]