Hybrid self-assembled materials constituted by ferromagnetic nanoparticles and tannic acid : A theoretical and experimental investigation
Santos, Anderson F. M. (Universidade Federal do Piauí. Departamento de Química)
Macedo, Lucyano J. A. (Universidade Federal do Piauí. Departamento de Química)
Chaves, Mariana H. (Universidade Federal do Piauí. Departamento de Química)
Espinoza Castañeda, Marisol (Institut Català de Nanociència i Nanotecnologia)
Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)
Lima, Francisco das Chagas A. (Universidade Estadual do Piauí)
Cantanhêde, Welter (Universidade Federal do Piauí. Departamento de Química)

Date:	2016
Abstract:	Hybrid magnetite materials are interesting for both biomedical and catalytic applications due to their well-known biocompatibility, as well as their magnetic and electric properties. In this work we prepared Fe O nanoparticles (NPs) coated with tannic acid (TA), a natural polyphenol, through two different synthetic routes, aiming to understand the influence of TA in the synthesis step and contribute to the development of water-dispersible magnetic materials. The coating process was verified by information obtained from transmission electron microscopy (TEM), zeta-potential and Fourier transform infrared (FTIR) spectroscopy. The incorporation of TA after Fe O NPs production generated spherical NPs smaller than 10 nm, suggesting that TA plays a fundamental role in the nucleation and organization of Fe O NPs. Data from both density functional theory (DFT) and FTIR allowed us to infer that Fe O interacts mainly with the carbonyl groups of TA. Hybrid materials having improved water-dispersibility are very attractive for biomedical applications.
Grants:	Ministerio de Ciencia e Innovación MAT2011-25870
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Journal of the Brazilian Chemical Society, Vol. 27, Núm. 4 (April 2016) , p. 727-734, ISSN 1678-4790

DOI: 10.5935/0103-5053.20150322

8 p, 776.0 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles