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Storozhuk L, Besenhard MO, Mourdikoudis S, LaGrow AP, Lees MR, Tung LD, Gavriilidis A, Thanh NTK. Stable Iron Oxide Nanoflowers with Exceptional Magnetic Heating Efficiency: Simple and Fast Polyol Synthesis. ACS APPLIED MATERIALS & INTERFACES 2021; 13:45870-45880. [PMID: 34541850 DOI: 10.1021/acsami.1c12323] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Magnetically induced hyperthermia has reached a milestone in medical nanoscience and in phase III clinical trials for cancer treatment. As it relies on the heat generated by magnetic nanoparticles (NPs) when exposed to an external alternating magnetic field, the heating ability of these NPs is of paramount importance, so is their synthesis. We present a simple and fast method to produce iron oxide nanostructures with excellent heating ability that are colloidally stable in water. A polyol process yielded biocompatible single core nanoparticles and nanoflowers. The effect of parameters such as the precursor concentration, polyol molecular weight as well as reaction time was studied, aiming to produce NPs with the highest possible heating rates. Polyacrylic acid facilitated the formation of excellent nanoheating agents iron oxide nanoflowers (IONFs) within 30 min. The progressive increase of the size of the NFs through applying a seeded growth approach resulted in outstanding enhancement of their heating efficiency with intrinsic loss parameter up to 8.49 nH m2 kgFe-1. The colloidal stability of the NFs was maintained when transferring to an aqueous solution via a simple ligand exchange protocol, replacing polyol ligands with biocompatible sodium tripolyphosphate to secure the IONPs long-term colloidal stabilization.
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Affiliation(s)
- Liudmyla Storozhuk
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, United Kingdom
| | - Maximilian O Besenhard
- Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Stefanos Mourdikoudis
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, United Kingdom
| | - Alec P LaGrow
- International Iberian Nanotechnology Laboratory, Braga 4715-330, Portugal
| | - Martin R Lees
- Superconductivity and Magnetism Group, Physics Department, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Le Duc Tung
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, United Kingdom
| | - Asterios Gavriilidis
- Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Nguyen Thi Kim Thanh
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, United Kingdom
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Ren L, Chen J, Lu Q, Han J, Wu H. Anti-biofouling nanofiltration membrane constructed by in-situ photo-grafting bactericidal and hydrophilic polymers. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118658] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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