Molecule-Driven Control of the Magnetic Anisotropy of Surface-Functionalized Maghemite Nanoparticles
Source abstract
Abstract
Using cobalt(II) complexes and a simple coordination reaction at the surface of maghemite nanoparticles, molecule-driven control of the effective magnetic anisotropy can be achieved. This functionalization strategy is explored for nanoparticles ranging from 4 to 8 nm and performed under soft synthetic conditions (mild temperature and in air) and in aqueous media. It preserves colloidal stability and permits an acute control of the magnetic properties with an increase in the blocking temperature and of the coercive field values. This effect is correlated to the quantity of complexes coordinated at the surface and the increase in the surface anisotropy of the nanoparticles. Magnetometry studies show that the effective magnetic anisotropy constant, K eff, can be modulated from 32 to 168 kJ·m –3 and with a few kJ·m –3 accuracy.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Magnetism in coordination complexes · Nanoparticle-Based Drug Delivery · Lanthanide and Transition Metal Complexes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratoire de Physicochimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX
Sorbonne Universitè, CNRS
Institut des Nanosciences de Paris, INSP
Sorbonne Université, CNRS
Institut Parisien de Chimie Moléculaire, IPCM
Institut de Minéralogie, de Physique de Matériaux et de Cosmochimie, IMPMC
Sorbonne Université, CNRS, IRD, MNHN
Plateforme de Mesures Physiques à Basses Températures, MPBT
Sorbonne Université
Funding
Minist?re de l'Enseignement Sup?rieur et de la Recherche Scientifique · Centre National de la Recherche Scientifique · Paris-IdF region SESAME · LabEx MiChem
References (59)
Show source-provided references
1. 10.1039/B815548H10.1039/B815548H ↗
2. 10.1002/adma.20110136810.1002/adma.201101368 ↗
3. 10.1021/ar200085c10.1021/ar200085c ↗
4. 10.1039/C7CS00657H10.1039/C7CS00657H ↗
5. 10.1002/adma.20190438510.1002/adma.201904385 ↗
6. 10.1021/acs.chemrev.1c0086010.1021/acs.chemrev.1c00860 ↗
7. 10.1109/TMAG.2021.307686810.1109/TMAG.2021.3076868 ↗
8. 10.1002/adfm.20110124310.1002/adfm.201101243 ↗
9. 10.1038/nnano.2011.9510.1038/nnano.2011.95 ↗
10. 10.1063/1.355158210.1063/1.3551582 ↗
11. 10.1016/j.jmmm.2013.11.00610.1016/j.jmmm.2013.11.006 ↗
12. 10.1038/nature0168710.1038/nature01687 ↗
13. 10.1021/jp991626i10.1021/jp991626i ↗
14. 10.1021/ja038085210.1021/ja0380852 ↗
15. 10.1021/acsami.4c0334310.1021/acsami.4c03343 ↗
16. 10.1002/adma.20250715810.1002/adma.202507158 ↗
17. 10.1021/nl301499u10.1021/nl301499u ↗
18. 10.1021/ja205810t10.1021/ja205810t ↗
19. 10.1021/jacs.9b0396510.1021/jacs.9b03965 ↗
20. 10.1039/D0NA00134A10.1039/D0NA00134A ↗
21. 10.1039/D3NA01108A10.1039/D3NA01108A ↗
22. 10.1021/acs.nanolett.5c0300510.1021/acs.nanolett.5c03005 ↗
23. 10.1021/nl102274910.1021/nl1022749 ↗
24. 10.1021/nn304477s10.1021/nn304477s ↗
25. 10.1021/ja076874410.1021/ja0768744 ↗
26. 10.1021/acsnano.7b0774510.1021/acsnano.7b07745 ↗
27. 10.1038/nature0120810.1038/nature01208 ↗
28. 10.1039/D1DT01519B10.1039/D1DT01519B ↗
29. 10.3390/nano1103062710.3390/nano11030627 ↗
30. 10.1021/acsanm.1c0031110.1021/acsanm.1c00311 ↗
31. 10.1021/acs.chemmater.1c0265410.1021/acs.chemmater.1c02654 ↗
32. 10.1002/adfm.20241471910.1002/adfm.202414719 ↗
33. 10.1021/ja035474n10.1021/ja035474n ↗
34. 10.1021/nl300665z10.1021/nl300665z ↗
35. 10.1021/acsanm.8b0200910.1021/acsanm.8b02009 ↗
36. 10.1039/C8QI01346B10.1039/C8QI01346B ↗
37. 10.1109/TMAG.1974.105835910.1109/TMAG.1974.1058359 ↗
38. 10.1051/jphyscol:197717010.1051/jphyscol:1977170 ↗
39. 10.1039/B613026G10.1039/B613026G ↗
40. 10.1021/jp405450p10.1021/jp405450p ↗
41. 10.1039/D3EN00379E10.1039/D3EN00379E ↗
42. 10.1038/ncomms1013910.1038/ncomms10139 ↗
43. 10.1039/D4NR01220H10.1039/D4NR01220H ↗
44. Massart R. · C. R. Seances Acad. Sci., Ser. C · 1980 · 291 · 1
45. 10.1557/JMR.1998.040710.1557/JMR.1998.0407 ↗
46. 10.1021/jp074311910.1021/jp0743119 ↗
47. 10.1063/1.493548410.1063/1.4935484 ↗
48. Néel L. · C. R. Seances Acad. Sci. · 1949 · 228 · 664
49. 10.1103/PhysRev.130.167710.1103/PhysRev.130.1677 ↗
50. 10.1103/PhysRevLett.90.06550410.1103/PhysRevLett.90.065504 ↗
51. 10.1016/j.jmmm.2003.12.135410.1016/j.jmmm.2003.12.1354 ↗
52. 10.1103/PhysRevB.76.06441610.1103/PhysRevB.76.064416 ↗
53. 10.1016/S0304-8853(98)00080-810.1016/S0304-8853(98)00080-8 ↗
54. 10.1103/PhysRevLett.72.28210.1103/PhysRevLett.72.282 ↗
55. Coey J. M. D. · 2010
56. 10.1016/j.poly.2004.09.01110.1016/j.poly.2004.09.011 ↗
57. 10.1016/0921-4526(93)90108-I10.1016/0921-4526(93)90108-I ↗
58. 10.1016/0022-4596(88)90239-310.1016/0022-4596(88)90239-3 ↗
59. Klug H. P. · 1994