The modification toward excited-state dynamics and catalytic activity by isomeric Au_(44)clusters
作者机构：School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China Hefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China School of Physical Science and TechnologyNingbo UniversityNingbo 315211China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第8期
页 面：11383-11388页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：We acknowledge financial support from the National Natural Science Foundation of China(Nos.22125202,22273095,and 22101128) Programs for high-level entrepreneurial and innovative talents introduction of Jiangsu Province,the Fundamental Research Funds for the Central Universities,Chinese Academy of Sciences(No.YSBR-007) China Postdoctoral Science Foundation(No.2022M721551)
主 题：cluster metal core surface ligand excited-state dynamics catalysis
摘 要：The structure determination of metal nanoclusters protected by ligands is critical in understanding their physical and chemical properties,yet it remains elusive how the metal core and ligand of metal clusters cooperatively contribute to the observed ***,with the successful synthesis of Au_(44)TBPA_(22)Cl_(2)cluster(TBPA=4-tert-butylphenylacetylene),the structural isomer of previously reported Au_(44)L_(28)clusters(L denoted as ligand)is filled,thereby providing an opportunity to explore the property evolution rules imparted by different metal core structures or different surface ***-resolved transient absorption spectroscopy reveals that the difference in the core structure between Au_(44)TBPA_(22)Cl_(2)and Au_(44)L_(28)can bring nearly 360 times variation of excited-state lifetime,while only 3–24 times differences in excited-state lifetimes of the three Au_(44)L_(28)nanoclusters with identical metal core but different ligands are observed,which is due to much stronger impact of the metal core than the surface ligands in the electronic energy bands of the *** addition,the Au_(44)clusters protected by alkyne ligands are shown to be highly effective toward the electrochemical oxidation of ethanol,compared to the Au_(44)clusters capped by thiolates,which is ascribed to smaller charge transfer impedance of the former *** anticipate that the study will enhance the process in controlling the nanomaterial properties by precisely tailoring metal core or surface patterns.
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