Atomically Precise Site-Specific Tailoring and Directional Assembly of Superatomic Silver Nanoclusters
Publication in refereed journal

香港中文大學研究人員
替代計量分析
.

其它資訊
摘要Convenient generation of stable superatomic silver clusters and their systematic site-specific tailoring and directional assembly present an enduring and significant challenge. In this work, we prepared a face-centered cubic (fcc) array of Ag-14 superatoms protected by face-capping 1,2-dithiolate-o-carborane (C2B10H10S2) ligands, each produced from 1-thiol-o-carborane in crystallization with simultaneous reduction of Ag+ to Ag-0. We find that the corner N-donor ligands contribute predominately to the stability and luminescence of the Ag-14 superatom. As the first-formed nanocluster [Ag-14(C2B10H10S2)(6)(CH3CN)(8)]center dot 4CH(3)CN (NC-1) with labile vertex-coordinated CH3CN ligands is highly unstable, monodendate pyridine ligands were used to replace these CH3CN species site-specifically, giving [Ag-14(C2B10H10S2)(6)(pyridine/p-methylpyridine)(8)] (NCs-2,3) in gram scale with its core structure intact, which features ultrastability up to 150 degrees C in air. Moreover, using bidentate N-containing ligands to bridge the superatomic Ag-14 building blocks, we constructed an unprecedented hierarchical series of 1D-to-3D superatomic silver cluster-assembled materials (SCAM-1,2,3,4), and SCAM-4 is air-stable up to 220 degrees C. Furthermore, this series of stable solid-state superatomic-nanocluster materials exhibit tunable dual emission with wide-range thermochromism. The present study constitutes a major step toward the development of ligand-modulation of the structure, stability, assembly, and functionality of superatomic silver nanoclusters.
著者Wang ZY, Wang MQ, Li YL, Luo P, Jia TT, Huang RW, Zang SQ, Mak TCW
期刊名稱Journal of the American Chemical Society
出版年份2018
月份1
日期24
卷號140
期次3
出版社AMER CHEMICAL SOC
頁次1069 - 1076
國際標準期刊號0002-7863
電子國際標準期刊號1520-5126
語言英式英語
Web of Science 學科類別Chemistry, Multidisciplinary;Chemistry

上次更新時間 2020-22-11 於 02:18