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Light-Switchable Biocatalytic Covalent-Organic Framework Nanomotors for Aqueous Contaminants Removal.
Nano Lett
December 2023
School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
Self-propelled nanomotors represent a promising class of adaptable and versatile technologies with broad applications in the realms of biomedicine and environmental remediation. Herein, we report a biocatalytic nanomotor based on a covalent-organic framework (COF) that demonstrates intelligent and switchable motion triggered by a blue-to-red light switch. Consequently, when exposed to blue light, the nanomotor significantly enhances the removal of contaminants in aqueous solutions due to its elevated mobility.
View Article and Find Full Text PDFHalloysite-Based Nanorockets with Light-Enhanced Self-Propulsion for Efficient Water Remediation.
Langmuir
January 2022
Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Solid Waste Recycling Engineering Research Center of Jilin Province, Open Research Laboratory for Physicochemical Testing Methods of Functional Minerals-Ministry of Natural Resources, Jilin University, Changchun 130022, China.
Halloysite-based tubular nanorockets with chemical-/light-controlled self-propulsion and on-demand acceleration in velocity are reported. The nanorockets are fabricated by modifying halloysite nanotubes with nanoparticles of silver (Ag) and light-responsive α-FeO to prepare a composite of Ag-FeO/HNTs. Compared to the traditional fabrication of tubular micro-/nanomotors, this strategy has merits in employing natural clay as substrates of an asymmetric tubular structure, of abundance, and of no complex instruments required.
View Article and Find Full Text PDFComparative Studies of Light-Responsive Swimmers: Janus Nanorods versus Spherical Particles.
Langmuir
October 2020
Institute of Materials Science and Ion Beam Research, Helmholtz Center Dresden Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany.
The shape of objects has a strong influence on their dynamics. Here, we present comparative studies of two different motile objects, spherical Ag/AgCl Janus particles and polystyrene Janus nanorods, that move due to an ionic self-diffusiophoretic propulsion mechanism when exposed to blue light. In this paper, we propose a method to fabricate Janus rodlike particles with high aspect ratios and hemispherical tip shapes.
View Article and Find Full Text PDFMulti-Light-Responsive Quantum Dot Sensitized Hybrid Micromotors with Dual-Mode Propulsion.
Angew Chem Int Ed Engl
March 2019
Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering and Chemical Research Institute "Andres M. Del Rio", University of Alcalá, Madrid, Spain.
CdS quantum dots/C tubular micromotors with chemical/multi-light-controlled propulsion and "on-the-fly" acceleration capabilities are described. In situ growth of CdS quantum dots on the outer fullerene layer imparts this layer with light-responsive properties in connection to inner Pt, Pd or MnO layers. This is the first time that visible light is used to drive bubble-propelled tubular micromotors.
View Article and Find Full Text PDFGuided by Light: Optical Control of Microtubule Gliding Assays.
Nano Lett
December 2018
Department of Bionanoscience, Kavli Institute of Nanoscience , Delft University of Technology, van der Maasweg 9 , 2629 HZ Delft , The Netherlands.
Force generation by molecular motors drives biological processes such as asymmetric cell division and cell migration. Microtubule gliding assays in which surface-immobilized motor proteins drive microtubule propulsion are widely used to study basic motor properties as well as the collective behavior of active self-organized systems. Additionally, these assays can be employed for nanotechnological applications such as analyte detection, biocomputation, and mechanical sensing.
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