期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 24, 页码 8786-8789出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja402680c
关键词
-
资金
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
Au-15(SR)(13) is the smallest stable thiolated gold nanocluster experimentally identified so far, and its elusive structure may hold the key to the origin of the nucleus in the formation of thiolated gold nanoclusters. By an extensive exploration of possible isomers by density functional theory, we arrive at a novel structure for Au-15(SR)(13) with high stability and whose optical absorption characteristics match those of the experiment. Different from the previous structures and the prevailing working hypothesis about the construction of thiolated gold nanoclusters, the Au-15(SR)(13) model features a cyclic [Au(I)-SR] pentamer interlocked with one staple trimer motif protecting the tetrahedral Au-4 nucleus, together with another trimer motif. This structure suggests that Au-15(SR)(13) is a transitional composition from an [Au(I)-SR] polymer such as Au-10(SR)(10) to larger Au-n(SR)(m) (n > m) dusters that have only the staple motifs and that the nucleation process starts from the Au-4 core.
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