分析测试学报2025，Vol.44Issue(7)：1307-1312,6.DOI:10.12452/j.fxcsxb.241023477
硫醇配体保护金纳米团簇的制备和质谱表征研究
Preparation and Mass Spectrometric Characterization of Thiol-ligand-protected Gold Nanoclusters
摘要
Abstract
Nanoclusters possess unique atomic configurations,electronic structures,and novel opti-cal,electrical,and catalytic properties,which make them widely applicable in fields such as catal-ysis,luminescent materials,detection devices,biology,and pharmaceuticals.Mass spectrometric characterization of nanoclusters can obtain precise mass number information of the nanoclusters,pro-viding important information for the establishment of structural theoretical models.This paper intro-duced the characterization of the process products and final products during oil-phase preparation of gold nanoclusters using triple quadrupole mass spectrometry and laser desorption/ionization mass spectrometry.Firstly,the ions at each reaction stage were characterized by triple quadrupole mass spectrometry,and the parent ions and their fragment ions obtained by neutral loss mode were as-signed.Secondly,the final products of the nanoclusters were characterized using laser desorption ionization mass spectrometry,and the effects of laser energy and matrix on the ionized products were investigated.The results showed that when 2-[3-(4-tert-butylphenyl)-2-methyl-2-propenyl]malono-nitrile was used as the auxiliary matrix,the signal intensity of the large number of clusters was signifi-cantly improved.A series of ions of gold nanoclusters were observed in the mass range of 2 500 to 5 300,with mass numbers of 2 817.7,3 014.7,3 211.7,3 441.8,3 637.8,3 866.7,4 063.8,4 260.7,4 489.7,4 688.8,4 883.8,5 112.9 and 5 309.9,respectively.These ad-jacent ions differed by one Au atom or AuS structural unit.Additionally,the peak of the gold cluster with the highest mass number was observed at positions 6 945 and 8 549,corresponding to Au21(C12H25S)14 and Au25(C12H25S)18,respectively.The research results of this paper have important guid-ing significance and reference value for the synthesis of nanoclusters and the establishment of cluster structure models.关键词
激光解吸飞行时间质谱/三重四极杆质谱/金纳米团簇/合成/表征Key words
laser desorption time-of-flight mass spectrometry/triple quadrupole mass spectrome-try/gold nanoclusters/synthesis/characterization分类
化学化工引用本文复制引用
李杨,张红燕,田颖,王卫国..硫醇配体保护金纳米团簇的制备和质谱表征研究[J].分析测试学报,2025,44(7):1307-1312,6.基金项目
国家重点研发计划(2024YFF0725701) （2024YFF0725701）
国家自然科学基金委重大研发计划(91961124) （91961124）
多通道制备质谱关键技术探索研究(DICPI202401) （DICPI202401）
