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Macroscale Chemotaxis from a Swarm of Bacteria-Mimicking Nanoswimmers

Ji, Yuxing and Lin, Xiankun and Wu, Zhiguang and Wu, Yingjie and Gao, Wei and He, Qiang (2019) Macroscale Chemotaxis from a Swarm of Bacteria-Mimicking Nanoswimmers. Angewandte Chemie International Edition, 58 (35). pp. 12200-12205. ISSN 1433-7851.

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Inspired by the dynamics of bacterial swarming, we report a swarm of polymer‐brush‐grafted, glucose‐oxidase‐powered Janus gold nanoswimmers with a positive, macroscale chemotactic behavior. These nanoswimmers are prepared through the grafting of polymer brushes onto one side of gold nanoparticles, followed by functionalization with glucose oxidase on the other side. The resulting polymer‐brush‐functionalized Janus gold nanoswimmers exhibit efficient propulsion with a velocity of up to approximately 120 body lengths s−1 in the presence of glucose. The comparative analysis of their kinematic behavior reveals that the grafted polymer brushes significantly improve the translational diffusion of Janus gold nanoswimmers. Particularly, these bacteria‐mimicking Janus gold nanoswimmers display a collectively chemotactic motion along the concentration gradient of a glucose resource, which could be observed at the macroscale.

Item Type:Article
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Gao, Wei0000-0002-8503-4562
Additional Information:© 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. Manuscript received: June 21, 2019; Accepted manuscript online: July 8, 2019; Version of record online: July 25, 2019. We appreciate the help of Prof. Luru Dai for the STROM characterization. This work is financially supported by the National Natural Science Foundation of China (21674029, 21603047, and 21573053), and China Postdoctoral Science Foundation funded project (2016M590286). The authors declare no conflict of interest.
Funding AgencyGrant Number
National Natural Science Foundation of China21674029
National Natural Science Foundation of China21603047
National Natural Science Foundation of China21573053
China Postdoctoral Science Foundation2016M590286
Subject Keywords:nanoswimmer, chemotaxis, nanomotor, swarm, enzymatic catalysis
Issue or Number:35
Record Number:CaltechAUTHORS:20190710-093408046
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Official Citation:Y. Ji, X. Lin, Z. Wu, Y. Wu, W. Gao, Q. He. Macroscale Chemotaxis from a Swarm of Bacteria-Mimicking Nanoswimmers. Angew. Chem. Int. Ed. 2019, 58, 12200. doi:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97024
Deposited By: Tony Diaz
Deposited On:10 Jul 2019 16:40
Last Modified:09 Mar 2020 13:18

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