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Issue 41, 2020
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Janus dendritic silica/carbon@Pt nanomotors with multiengines for H2O2, near-infrared light and lipase powered propulsion

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Abstract

Hybrid micro/nanomotors with multiple distinct propulsion modes are expected to improve their motion ability in complex body fluids. Herein, we report a multi-stimuli propelled Janus lipase-modified dendritic silica/carbon@Pt (DMS/C@Pt) nanomotor with built-in engines for hybrid propulsions of H2O2, light, and enzyme. The enhanced motion of the DMS/C@Pt nanomotor is achieved under the stimulus of H2O2 that produces an oxygen concentration gradient derived from the asymmetric catalysis of Pt nanoparticles. Irradiated with near-infrared (NIR) light, the uneven photothermal effect of the carbon part propels this nanomotor by self-thermophoresis. Besides, lipase is efficiently loaded into the dendritic pores, which decomposes triglyceride on the silica part and induces self-diffusiophoretic propulsion. These multiple propulsions shed light on the rational integration of various functional building blocks into one micro/nanomotor for complex tasks in biomedical applications.

Graphical abstract: Janus dendritic silica/carbon@Pt nanomotors with multiengines for H2O2, near-infrared light and lipase powered propulsion

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Supplementary files

Article information


Submitted
25 Jul 2020
Accepted
06 Sep 2020
First published
07 Sep 2020

Soft Matter, 2020,16, 9553-9558
Article type
Paper

Janus dendritic silica/carbon@Pt nanomotors with multiengines for H2O2, near-infrared light and lipase powered propulsion

Y. Xing, X. Du, T. Xu and X. Zhang, Soft Matter, 2020, 16, 9553
DOI: 10.1039/D0SM01355B

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