期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 38, 页码 16683-16689出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202006569
关键词
catalytic reactions; gold; nanoparticles; N-heterocyclic carbenes; poly-NHC cage
资金
- NSFC [21722105, 21771146]
- National Youth Top-notch Talent Support Program of China
- Key Science and Technology Innovation Team of Shaanxi Province [2019TD-007, 2019JLZ-02]
- FMAMP
- EM International Joint Laboratory of Northwest University
Controlling the size and surface functionalization of nanoparticles (NPs) can lead to improved properties and applicability. Herein, we demonstrate the efficiency of the metal-carbene template approach (MCTA) to synthesize highly robust and soluble three-dimensional polyimidazolium cages (PICs) of different sizes, each bearing numerous imidazolium groups, and use these as templates to synthesize and stabilize catalytically active, cavity-hosted, dispersed poly-N-heterocyclic carbene (NHC)-anchored gold NPs. Owing to the stabilization of the NHC ligands and the effective confinement of the cage cavities, the as-prepared poly-NHC-shell-encapsulated AuNPs displayed promising stability towards heat, pH, and chemical regents. Most notably, all the Au@PCCs (PCC=polycarbene cage) exhibited excellent catalytic activities in various chemical reactions, together with high stability and durability.
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