期刊
NANO RESEARCH
卷 13, 期 7, 页码 1908-1911出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-020-2685-0
关键词
carbene ligands; gold nanocluster; catalysis; luminescence; Au-13
类别
资金
- National Key R&D Program of China [2017YFA0207304]
- National Nautural Science Foundation of China [21890752, 21731005, 21802109, 21721001]
- fundamental research funds for central universities [20720190043]
We report herein a class of superatomic Au-13 clusters stabilized by different N-heterocyclic carbenes (NHCs). The clusters show diverse metal surface structures, properties and functions as exemplified by: (1) the first anionic Au-13 cluster [Au-13(NHC-1)(6)Br-6](-), which has bulky NHC-1 ligands that lead to a rather open metal surface contributing to its high catalytic activity; (2) the tricationic cluster [Au-13(NHC-2)(5)Br-2](3+) which has bidentate, benzyl-rich NHC-2 ligands that make it ultra-stable and highly-luminescent, suitable for bio-imaging; and (3) by bearing two pyridyl groups on NHC-3, the dicationic cluster [Au-13(NHC-3)(9)CI3](2+) exhibits reversible and stable visible absorption and solubility responses to protonation/deprotonation cycles, making it a potential pH sensor (NHC-1 = 1,3-diisopropylbenzimidazolin-2-ylidene; NHC-2 = 1,3-bis(1-benzyl-1H-benzimidazol-1-ium-3-yl)propane; NHC-3 = 1,3-bis(picolyl)benzimidazolin-2-ylidene). The study nicely demonstrates the importance of ligands in designing metal nanoclusters with desired functionalities.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据