Journal ArticleDOI
Enhanced Surface Ligands Reactivity of Metal Clusters by Bulky Ligands for Controlling Optical and Chiral Properties
TLDR
In this paper, the surface ligands play critical roles in determining the surface properties of metal clusters, and a new insight into modulation of the optical properties of the metal clusters and atomically precise homochiral clusters for specific applications are obtained.Abstract:
Surface ligands play critical roles in determining the surface properties of metal clusters. However, modulating the properties and controlling the surface structure of clusters through surface-capping-agent displacement is challenging. Herein, [Ag14 (SPh(CF3 )2 )12 (PPh3 )4 (DMF)4 ] (Ag14 -DMF; DMF=N,N-dimethylformamide), with weakly coordinated DMF ligands on surface silver sites, was synthesized by a mixed-ligands strategy. Owing to the high surface reactivity of Ag14 -DMF, the surface ligands are labile, easily dissociated or exchanged by other ligands. Based on the enhanced surface reactivity, easy modulation of the optical properties of Ag14 by reversible "on-off" DMF ligation was realized. When chiral amines were introduced to as-prepared products, all eight surface ligands were replaced by amines and the racemic Ag14 clusters were converted to optically pure homochiral Ag14 clusters as evidenced by circular dichroism (CD) activity and single-crystal X-ray diffraction (SCXRD). This work provides a new insight into modulation of the optical properties of metal clusters and atomically precise homochiral clusters for specific applications are obtained.read more
Citations
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Journal ArticleDOI
Assembly of Chiral Cluster-Based Metal-Organic Frameworks and the Chirality Memory Effect during their Disassembly.
TL;DR: In this paper, an interesting assembly disassembly (ASDS) strategy was proposed to obtain the corresponding, optically pure crystals of both homochiral enantiomers, R-Ag14m and S-Ag 14m.
Journal ArticleDOI
Revealing the chirality origin and homochirality crystallization of Ag14 nanocluster at the molecular level.
Xiao-Qian Liang,Ying-Zhou Li,Zhi Wang,Shan-Shan Zhang,Yi-Cheng Liu,Zhao-Zhen Cao,Lei Feng,Zhi-Yong Gao,Qing-Wang Xue,Chen-Ho Tung,Di Sun +10 more
TL;DR: In this article, two homochiral Ag14 nanoclusters with inherent chirality originated from identical rotation of six-square faces on a Ag8 cube driven by intra-cluster π···π stacking interaction between pntp− (Hpntp = p-nitrothiophenol) ligands.
Journal ArticleDOI
Engineering luminescent metal nanoclusters for sensing applications
TL;DR: In this article , the physicochemical properties of metal nanoclusters (MNCs) have been discussed, and the main synthetic strategies of highly luminescent MNCs were summarized.
Journal ArticleDOI
Engineering luminescent metal nanoclusters for sensing applications
TL;DR: In this paper, the physicochemical properties of metal nanoclusters (MNCs) have been discussed, and the main synthetic strategies of highly luminescent MNCs were summarized.
Journal ArticleDOI
Tailoring optical and photocatalytic properties by single-Ag-atom exchange in Au13Ag12(PPh3)10Cl8 nanoclusters
Zhaoxian Qin,Zhaoxian Qin,Song Hu,Wenhua Han,Zhiwen Li,Zhiwen Li,Wen Wu Xu,Jingjing Zhang,Jingjing Zhang,Gao Li,Gao Li +10 more
TL;DR: In this paper, the authors developed a highly controllable strategy for exchanging a single Ag atom into the central gold site of Au13Ag12(PPh3)10Cl8 (Ph = phenyl) nanoclusters.
References
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Journal ArticleDOI
Structure of a thiol monolayer-protected gold nanoparticle at 1.1 A resolution
Pablo D. Jadzinsky,Guillermo Calero,Christopher J. Ackerson,David A. Bushnell,Roger D. Kornberg +4 more
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Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles
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Atomically Precise Noble Metal Nanoclusters as Efficient Catalysts: A Bridge between Structure and Properties.
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Journal ArticleDOI
Towards the online computer-aided design of catalytic pockets
Laura Falivene,Zhen Cao,Andrea Petta,Luigi Serra,Albert Poater,Romina Oliva,Vittorio Scarano,Luigi Cavallo +7 more
TL;DR: Topographic steric maps are introduced that provide a three-dimensional image of the catalytic pocket—the region of the catalyst where the substrate binds and reacts—enabling it to be visualized and also reshaped by changing various parameters.
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