Spiky Magnetic Microparticles Synthesized from Microrod-Stabilized Pickering Emulsion.
Autor: | Mu Y; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA., Tran HH; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.; School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA., Xiang Z; School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA., Majumder A; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA., Hsu E; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA., Steager E; School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA., Koo H; School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA., Lee D; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA. |
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Jazyk: | angličtina |
Zdroj: | Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Jun 12, pp. e2402292. Date of Electronic Publication: 2024 Jun 12. |
DOI: | 10.1002/smll.202402292 |
Abstrakt: | Tailoring the microstructure of magnetic microparticles is of vital importance for their applications. Spiky magnetic particles, such as those made from sunflower pollens, have shown promise in single cell treatment and biofilm removal. Synthetic methods that can replicate or extend the functionality of such spiky particles would be advantageous for their widespread utilization. In this work, a wet-chemical method is introduced for spiky magnetic particles that are templated from microrod-stabilized Pickering emulsions. The spiky morphology is generated by the upright attachment of silica microrods at the oil-water interface of oil droplets. Spiky magnetic microparticles with control over the length of the spikes are obtained by dispersing hydrophobic magnetic nanoparticles in the oil phase and photopolymerizing the monomer. The spiky morphology dramatically enhances colloidal stability of these particles in high ionic strength solutions and physiologic media such as human saliva and saline-based biofilm suspension. To demonstrate their utility, the spiky magnetic particles are applied for magnetically controlled removal of oral biofilms and retrieval of bacteria for diagnostic sampling. This method expands the toolbox for engineering microparticle morphology and could promote the fabrication of functional magnetic microrobots. (© 2024 The Author(s). Small published by Wiley‐VCH GmbH.) |
Databáze: | MEDLINE |
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