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From chain to framework: atomically precise silver cluster-assembled architectures
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DOI：10.1039/D5NR04708K.png)
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Abstract
En 中文
The controlled assembly of atomically defined metal nanoclusters (NCs) into extended frameworks represents a powerful approach to developing functional materials with tailored properties. However; achieving structural dimensionality (1D–3D) control while maintaining the integrity of a single cluster core remains a significant challenge. Herein; we report the construction of a series of silver cluster-assembled materials (SCAMs) using Ag12 clusters and directional N-donor ligands of varying lengths. The resulting architectures—1D [Ag12(StBu)6(CF3COO)6(Py2S)2(CH3CN)2]; 2D [Ag12(StBu)6(CF3COO)6(bpm)3]; and 3D [Ag12(StBu)6(CF3COO)6(tmdp)3]—feature preserved cuboctahedral Ag12 cores connected through directional Ag-N bonding. Single-crystal X-ray diffraction confirms structural fidelity across all dimensions. These assemblies provide a rare platform to systematically explore the impact of dimensionality on function. Catalytic tests reveal that all three SCAMs efficiently catalyze the hydrogenation of nitroaromatics to aminoaromatics; with the 1D SCAM exhibiting the highest activity. This work highlights a rational; ligand-directed strategy for creating dimensionally tunable; atomically precise cluster-based frameworks and establishes a direct link between structural dimensionality and catalytic performance. Our findings offer a blueprint for designing next-generation nanomaterials with customized architectures and functions for advanced catalytic and optoelectronic applications.