Jump to main content
Jump to site search

Issue 44, 2016
Previous Article Next Article

Tuning morphology and magnetism of magnetite nanoparticles by calix[8]arene-induced oriented aggregation

Author affiliations

Abstract

Magnetite nanoparticles have been prepared by oriented aggregation exploiting the action of calix[8]arene, an organic macrocycle capable of complexing Fe ions, during the synthesis. Control over the degree of aggregation enables tuning of the morphology of the product, which can vary from multicore aggregated nanoparticles to nano-octahedra, with a dramatic change in the magnetic properties. Octahedral magnetite nanoparticles display ferrimagnetic behavior, which is typical of magnetite above 40 nm in size. In contrast, multicore nanostructures exhibit a narrower hysteresis loop and remarkable heating capacity under an alternating magnetic field. With the aim of producing a material useful for biomedical applications, all samples were made to be dispersible in water and biocompatible by ligand exchange with 2,3-dimercaptosuccinic acid. Their morphology and magnetic properties were maintained after functionalization, as well as their good colloidal properties, which were characterized by dynamic light scattering.

Graphical abstract: Tuning morphology and magnetism of magnetite nanoparticles by calix[8]arene-induced oriented aggregation

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 May 2016, accepted on 22 Jul 2016 and first published on 25 Jul 2016


Article type: Paper
DOI: 10.1039/C6CE01252C
Citation: CrystEngComm, 2016,18, 8591-8598
  •   Request permissions

    Tuning morphology and magnetism of magnetite nanoparticles by calix[8]arene-induced oriented aggregation

    F. Vita, H. Gavilán, F. Rossi, C. de Julián Fernández, A. Secchi, A. Arduini, F. Albertini and M. P. Morales, CrystEngComm, 2016, 18, 8591
    DOI: 10.1039/C6CE01252C

Search articles by author

Spotlight

Advertisements