Tang Li, Duan Tengfei, Pei Yong, Wang Shuxin
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P. R. China.
ACS Nano. 2023 Mar 14;17(5):4279-4286. doi: 10.1021/acsnano.2c07136. Epub 2023 Mar 6.
Understanding the growth of nanoclusters and the relationship between structure-activity depends on the precise arrangement of metals on their surface. In this work, we realized the synchronous rearrangement of metal atoms on the equatorial plane of Au-Cu alloy nanoclusters. Upon adsorption of the phosphine ligand, the Cu atoms on the equatorial plane of the AuCu(SPh) nanocluster are irreversibly rearranged. The whole metal rearrangement process can be understood from a synchronous metal rearrangement mechanism initiated by the adsorption of the phosphine ligand. Furthermore, this metal rearrangement can effectively improve the efficiency of A coupling reactions without increasing the amount of catalyst.
了解纳米团簇的生长以及结构-活性之间的关系取决于金属在其表面的精确排列。在这项工作中，我们实现了金-铜合金纳米团簇赤道面上金属原子的同步重排。膦配体吸附后，AuCu(SPh)纳米团簇赤道面上的铜原子发生不可逆重排。整个金属重排过程可以从由膦配体吸附引发的同步金属重排机制来理解。此外，这种金属重排可以在不增加催化剂用量的情况下有效提高A偶联反应的效率。
