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Full Paper
Signatures of Clustering in Superparamagnetic Colloidal Nanocomposites of an Inorganic and Hybrid Nature
Article first published online: 18 JAN 2008
DOI: 10.1002/smll.200700515
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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How to Cite
Rebolledo, Aldo F., Fuertes, Antonio B., Gonzalez-Carreño, T., Sevilla, M., Valdes-Solis, T. and Tartaj, P. (2008), Signatures of Clustering in Superparamagnetic Colloidal Nanocomposites of an Inorganic and Hybrid Nature. Small, 4: 254–261. doi: 10.1002/smll.200700515
Publication History
- Issue published online: 4 FEB 2008
- Article first published online: 18 JAN 2008
- Manuscript Received: 10 JUL 2007
- Abstract
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Keywords:
- colloids;
- magnetic materials;
- magnetic properties;
- mesoporous materials;
- nanocomposites
Abstract
The individual and co-operative properties of inorganic and hybrid superparamagnetic colloidal nanocomposites that satisfy all the requirements of magnetic carriers in the biosciences and/or catalysis fields are been studied. Essential to the success of this study is the selection of suitable synthetic routes (aerosol and nanocasting) that allow the preparation of materials with different matrix characteristics (carbon, silica, and polymers with controlled porosity). These materials present magnetic properties that depend on the average particle size and the degree of polydispersity. Finally, the analysis of the co-operative behavior of samples allows for the detection of signatures of clustering, which are closely related to the textural characteristics of samples and the methodology used to produce the magnetic carriers.