Publications

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2023
Chaparro, Catarina IP, Beatriz T. Simões, João P. Borges, Miguel ARB Castanho, Paula I. P. Soares, and Vera Neves. "A promising approach: magnetic nanosystems for Alzheimer’s disease theranostics." 15.9 (2023): 2316. Abstract
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2022
Chaparro, C., M. Cavaco, J. P. Borges, M. Castanho, P. Soares, and V. Neves. "Nanoparticles for brain drug delivery-overcoming the blood-brain barrier." Vol. 12. WILEY 111 RIVER ST, HOBOKEN 07030-5774, NJ USA, 2022. 29-30. Abstract
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2021
Graça, Manuel Pedro, Silvia Soreto, Silvia Gavinho, Manuel Valente, Cristiane Salgueiro, José Nunes, Paula Soares, Maria Lança, Tania Vieira, and Jorge Silva. "Nanomaterials for magnetic hyperthermia." 31.Supplement_2 (2021): ckab120-066. Abstract
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2020
Gavinho, Sílvia Rodrigues, Mariana Castro Soares, João Paulo Borges, Jorge Carvalho Silva, Isabel Sá Nogueira, and Manuel Pedro Fernandes Graça. "Preparation and Characterization of Zinc and Magnesium Doped Bioglasses." Nanoscience and Nanotechnology in Security and Protection against CBRN Threats. Springer, Dordrecht, 2020. 465-475. Abstract
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2018
Ropio, I., AC Baptista, JP Nobre, J. Correia, F. Belo, S. Taborda, BM Morais Faustino, J. P. Borges, A. Kovalenko, and I. Ferreira. "Cellulose paper functionalised with polypyrrole and poly (3, 4-ethylenedioxythiophene) for paper battery electrodes." 62 (2018): 530-535. Abstract
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Baptista, AC, I. Ropio, B. Romba, JP Nobre, C. Henriques, JC Silva, JI Martins, J. P. Borges, and I. Ferreira. "Cellulose-based electrospun fibers functionalized with polypyrrole and polyaniline for fully organic batteries." 6.1 (2018): 256-265. Abstract
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2016
Soares, Paula I. P., Ana Isabel Sousa, Jorge Carvalho Silva, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Chitosan-based nanoparticles as drug delivery systems for doxorubicin: Optimization and modelling." Carbohydrate polymers. 147 (2016): 304-312. Abstract
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Soares, Paula I. P., César AT Laia, Alexandra Carvalho, Laura CJ Pereira, Joana T. Coutinho, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Iron oxide nanoparticles stabilized with a bilayer of oleic acid for magnetic hyperthermia and MRI applications." Applied Surface Science. 383 (2016): 240-247. Abstract
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Soares, Paula I. P., Diana Machado, César Laia, Laura CJ Pereira, Joana T. Coutinho, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Thermal and magnetic properties of chitosan-iron oxide nanoparticles." Carbohydrate polymers. 149 (2016): 382-390. Abstract
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Soares, Paula I. P., Ana Isabel Sousa, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Towards the development of multifunctional chitosan-based iron oxide nanoparticles: Optimization and modelling of doxorubicin release." Carbohydrate Polymers. 153 (2016): 212-221. Abstract
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2015
Echeverria, Coro, Paula Soares, Ana Robalo, Laura Pereira, Carlos M. M. Novo, Isabel Ferreira, and João Paulo Borges. "One-pot synthesis of dual-stimuli responsive hybrid PNIPAAm-chitosan microgels." Materials & Design. 86 (2015): 745-751. Abstract
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Soares, Paula I. P., Frederik Lochte, Coro Echeverria, Laura CJ Pereira, Joana T. Coutinho, Isabel M. M. Ferreira, Carlos M. M. Novo, and others. "Thermal and magnetic properties of iron oxide colloids: influence of surfactants." Nanotechnology. 26 (2015): 425704. Abstract
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2014
Soares, PI, AM Alves, LC Pereira, JT Coutinho, IM Ferreira, CM Novo, and J. P. Borges. "Effects of surfactants on the magnetic properties of iron oxide colloids." J Colloid Interface Sci.. 419 (2014): 46-51. AbstractWebsite

Iron oxide nanoparticles are having been extensively investigated for several biomedical applications such as hyperthermia and magnetic resonance imaging. However, one of the biggest problems of these nanoparticles is their aggregation.

Taking this into account, in this study the influence of three different surfactants (oleic acid, sodium citrate and Triton X-100) each one with various concentrations in the colloidal solutions stability was analyzed by using a rapid and facile method, the variation in the optical absorbance along time.

The synthesized nanoparticles through chemical precipitation showed an average size of 9 nm and a narrow size distribution. X-ray diffraction pattern and Fourier Transform Infrared analysis confirmed the presence of pure magnetite. SQUID measurements showed superparamagnetic properties with a blocking temperature around 155 K. In addition it was observed that neither sodium citrate nor Triton X-100 influences the magnetic properties of the nanoparticles. On the other hand, oleic acid in a concentration of 64 mM decreases the saturation magnetization from 67 to 45 emu/g. Oleic acid exhibits a good performance as stabilizer of the iron oxide nanoparticles in an aqueous solution for 24 h, for concentrations that lead to the formation of the double layer.

2012
AFR, Pimenta, Baptista AC, Carvalho T, Brogueira P, Lourenco NMT, Afonso CAM, Barreiros S, Vidinha P, and Borges JP. "Electrospinning of Ion Jelly fibers." MATERIALS LETTERS. 83 (2012): 161-164. Abstract
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