Interfacial Superassembly of Light-Responsive Mechanism-Switchable Nanomotors with Tunable Mobility and Directionality

• DOI: 10.1021/acsami.1c25204
• Publication Date: 2022-03-25T00:04:21Z
• Authors: Tianyi Liu; Lei Xie; Jie Zeng; Miao Yan; Beilei Qiu; Xinyao Wang; Shan Zhou; Xin Zhang; Hui Zeng; Qirui Liang; Yanjun He; Kang Liang; Jian Liu; Eirini Velliou; Lei Jiang; Biao Kong
• Keywords: Directionality

Mechanism-switchable nanomotors are expected to exhibit high adaptability and wide applicability. Herein, for the first time, we report a flask-shaped carbon@Pt@fatty-acid nanomotor with light-induced switch between nonionic self-diffusiophoresis bubble propulsion. This is fabricated through superassembly of platinum nanoparticles on surface carbon nanobottles, fatty acids infused into cavity nanobottles serve as light-sensitive switch. Such can be propelled via catalytic decomposition H2O2 by nanoparticles, exhibiting opening-forward migration. Upon 980 nm laser irradiation, melt due photothermal effect released from cavity, switching dominant operational mechanism propulsion bottom-forward Compared self-diffusiophoresis, shows higher mobility better directionality hindered self-rotation. Simulation results further reveal that confinement which facilitates nucleation nanobubbles, leads study offers an insight relationship nanostructures, fundamental mechanisms, apparent performance, well provides novel strategy regulation movement, instructive both design applications nanomotors.