Breaking the nanoparticle’s dispersible limit via rotatable surface ligands

Yue Liu, Na Peng, Yifeng Yao, Xuan Zhang, Xianqi Peng, Liyan Zhao, Jing Wang, Liang Peng, Zuankai Wang, Kenji Mochizuki (), Min Yue () and Shikuan Yang ()
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Yue Liu: Zhejiang University
Na Peng: Zhejiang University
Yifeng Yao: Zhejiang University
Xuan Zhang: Zhejiang University
Xianqi Peng: Zhejiang University
Liyan Zhao: Zhejiang University
Jing Wang: University of Michigan
Liang Peng: City University of Hongkong
Zuankai Wang: City University of Hongkong
Kenji Mochizuki: Zhejiang University
Min Yue: Zhejiang University
Shikuan Yang: Zhejiang University

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Achieving versatile dispersion of nanoparticles in a broad range of solvents (e.g., water, oil, and biofluids) without repeatedly recourse to chemical modifications are desirable in optoelectronic devices, self-assembly, sensing, and biomedical fields. However, such a target is limited by the strategies used to decorate nanoparticle’s surface properties, leading to a narrow range of solvents for existing nanoparticles. Here we report a concept to break the nanoparticle’s dispersible limit via electrochemically anchoring surface ligands capable of sensing the surrounding liquid medium and rotating to adapt to it, immediately forming stable dispersions in a wide range of solvents (polar and nonpolar, biofluids, etc.). Moreover, the smart nanoparticles can be continuously electrodeposited in the electrolyte, overcoming the electrode surface-confined low throughput limitation of conventional electrodeposition methods. The anomalous dispersive property of the smart Ag nanoparticles enables them to resist bacteria secreted species-induced aggregation and the structural similarity of the surface ligands to that of the bacterial membrane assists them to enter the bacteria, leading to high antibacterial activity. The simple but massive fabrication process and the enhanced dispersion properties offer great application opportunities to the smart nanoparticles in diverse fields.

Date: 2022
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DOI: 10.1038/s41467-022-31275-7

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