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Updated: Mar 9, 2026

A Method to Fabricate Disconnected Silver Nanostructures in 3D
Published on: November 27, 2012
Doping-Induced Anisotropic Self-Assembly of Silver Icosahedra in [Pt2Ag23Cl7(PPh3)10] Nanoclusters
Megalamane S Bootharaju1, Sergey M Kozlov1, Zhen Cao1
1KAUST Catalysis Center, ‡Functional Materials Design, Discovery and Development Research Group (FMD3), Advanced Membranes and Porous Materials Center, §KAUST Solar Center, and ∥Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia.
Abstract:
Atomically precise self-assembled architectures of noble metals with unique surface structures are necessary for prospective applications. However, the synthesis of such structures based on silver is challenging because of their instability. In this work, by developing a selective and controlled doping strategy, we synthesized and characterized a rod-shaped, charge-neutral, diplatinum-doped Ag nanocluster (NC) of [Pt2Ag23Cl7(PPh3)10]. Its crystal structure revealed the self-assembly of two Pt-centered Ag icosahedra through vertex sharing. Five bridging and two terminal chlorides and 10 PPh3 ligands were found to stabilize the cluster. Electronic structure simulations corroborated structural and optical characterization of the cluster and provided insights into the effect of the Pt dopants on the optical properties and stability of the cluster. Our study will open new avenues for designing novel self-assembled NCs using different elemental dopants.
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