Publications

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2013
Correia VG, Coelho M, Barroso T, Raje VP, Bonifácio VDB, Casimiro T, Pinho MG, Aguiar-Ricardo A. "Anti-biofouling 3D porous systems: the blend effect of oxazoline-based oligomers on chitosan scaffolds." Biofouling. 2013;29(3):273-282. AbstractWebsite
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Barroso T, Hussain A, Roque ACA, Aguiar-Ricardo A. "Functional monolithic platforms: Chromatographic tools for antibody purification." Biotechnology Journal. 2013;8(6):671-681. AbstractWebsite
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Raje VP, Morgado PI, Ribeiro MP, Correia IJ, Bonifácio VDB, Branco PS, Aguiar-Ricardo A. "Dual on–off and off–on switchable oligoaziridine biosensor." Biosensors and Bioelectronics. 2013;39:64-69. AbstractWebsite
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2012
Barroso T, Roque ACA, Aguiar-Ricardo A. "Bioinspired and sustainable chitosan-based monoliths for antibody capture and release." RSC Advances. 2012;2(30):11285-11294. AbstractWebsite
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Bonifácio VDB, Correia VG, Pinho MG, Lima JC, Aguiar-Ricardo A. "Blue emission of carbamic acid oligooxazoline biotags." Materials Letters. 2012;81:205-208. AbstractWebsite
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Temtem M, Barroso T, Casimiro T, Mano JF, Aguiar-Ricardo A. "Dual stimuli responsive poly(N-isopropylacrylamide) coated chitosan scaffolds for controlled release prepared from a non residue technology." Journal of Supercritical Fluids. 2012;66:398-404. AbstractWebsite
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Restani RB, Morgado PI, Ribeiro MP, Correia IJ, Aguiar-Ricardo A, Bonifácio VDB. "Biocompatible Polyurea Dendrimers with pH-Dependent Fluorescence." Angewandte Chemie International Edition. 2012;51:5162-5165. AbstractWebsite

Biocompatible and biodegradable water-soluble dendrimers comprising ureas within the interior and amino groups on the periphery were synthesized in supercritical carbon dioxide (dendrimer of generation 1 shown in picture). This novel class of dendrimers shows a pH-dependent intrinsic blue fluorescence at very low concentrations, which makes them potential polymeric fluorescent cell markers.

Barroso T, Viveiros R, Temtem M, Casimiro T, Botelho do Rego AM, Aguiar-Ricardo A. "A Combined Strategy to Surface-Graft Stimuli-Responsive Hydrogels Using Plasma Activation and Supercritical Carbon Dioxide." ACS Macro Letters. 2012;1:356-360. AbstractWebsite

Differently shaped polymeric matrices were efficiently coated with stimuli-responsive hydrogels for a wide range of applications using a new methodology. By combining plasma surface activation and polymerization in supercritical media at mild conditions, we report the direct smart coating of microcarriers and membranes in gram-scale quantities with a scalable, green, and low-cost approach.

da Silva MS, Viveiros R, Aguiar-Ricardo A, Bonifacio VDB, Casimiro T. "Supercritical fluid technology as a new strategy for the development of semi-covalent molecularly imprinted materials." RSC Adv.. 2012;2:5075-5079. AbstractPDFWebsite

Molecularly imprinted polymeric particles with molecular recognition towards Bisphenol A (BPA) were synthesized for the first time using the semi-covalent imprinting approach in supercritical carbon dioxide (scCO2). The material{'}s affinity to BPA was achieved by co-polymerizing ethylene glycol dimethacrylate (EGDMA) with a template-containing monomer{,} Bisphenol A dimethacrylate (BPADM) in scCO2. Bisphenol A is then cleaved from the polymeric matrix by hydrolysis with tetrabutylammonium hydroxide (n-Bu4OH) also in a supercritical environment{,} taking advantage of the high diffusivity of scCO2. The selectivity of the molecular imprinted polymer (MIP) was assessed by evaluating its capability to bind BPA in comparison with progesterone and [small alpha]-ethinylestradiol. In addition{,} the cross-linked particles were used to prepare a PMMA-based hybrid imprinted membrane by a scCO2-assisted phase inversion method. Results show that the incorporation of MIP particles was able to confer molecular affinity to BPA to the membrane and that at dynamic conditions of filtration{,} this imprinted porous structure was able to adsorb a higher amount of BPA than the corresponding non-imprinted hybrid membrane. Our work represents a valuable greener alternative to conventional methods{,} for the synthesis of affinity materials which are able to maintain molecular recognition properties in water.

Barroso T, Viveiros R, Coelho M, Casimiro T, Botelho do Rego AM, Aguiar-Ricardo A. "Influence of poly(N-isopropylacrylamide) and poly(N,N′-diethyl acrylamide) coatings on polysulfone/polyacrylonitrile-based membranes for protein separation." Polymers for Advanced Technologies. 2012;23:1381-1393. AbstractWebsite

Herein we describe the design and the assembly of temperature sensitive polysulfone (PS)/polyacrylonitrile (PAN) blend membranes using supercritical fluid technology. Blended membranes were prepared using the CO2-assisted phase inversion method, and their pores were coated with two thermoresponsive hydrogels-poly(N-isopropylacrylamide) (PNIPAAm) and poly(N,N′-diethylacrylamide) (PDEAAm). Permeation experiments of bovine serum albumin (BSA) and lysozyme (LYS) solutions were used to evaluate the performance and temperature-responsive behavior of coated membranes. While membranes coated with PNIPAAm presented similar protein permeation profiles at temperatures below and above its lower critical solution temperature, PDEAAm coating imparted a temperature-responsive behavior to PS/PAN (90:10) membranes and selective permeation of proteins with different sizes. Copyright © 2011 John Wiley & Sons, Ltd.

2011
Barroso T, Temtem M, Casimiro T, Aguiar-Ricardo A. "Antifouling performance of poly(acrylonitrile)-based membranes: From green synthesis to application." Journal of Supercritical Fluids. 2011;56(3):312-321. AbstractWebsite
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Correia VG, Bonifácio VD, Raje VP, Casimiro T, Moutinho G, da Silva CL, Pinho MG, Aguiar-Ricardo A. "Oxazoline-Based Antimicrobial Oligomers: Synthesis by CROP Using Supercritical CO 2." Macromolecular Bioscience. 2011;11(8):1128-1137. AbstractWebsite
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2010
Restani RB, Correia VG, Bonifácio VDB, Aguiar-Ricardo A. "Development of functional mesoporous microparticles for controlled drug delivery." Journal of Supercritical Fluids. 2010;55(1):333-339. AbstractWebsite
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Barroso T, Viveiros R, Costa E, Temtem M, Casimiro T, Aguiar-Ricardo A. "Development of switchable "smart" biomaterials using an environmental friendly technology.". In: Materials Research Society Symposium Proceedings. Vol. 1220.; 2010:. Abstract
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Barroso T, Temtem M, Hussain A, Aguiar-Ricardo A, Roque ACA. "Preparation and characterization of a cellulose affinity membrane for human immunoglobulin G (IgG) purification." Journal of Membrane Science. 2010;348(1-2):224-230. AbstractWebsite
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2009
Temtem M, Pompeu D, Barroso T, Fernandes J, Simões PC, Casimiro T, Botelho Do Rego AM, Aguiar-Ricardo A. "Development and characterization of a thermoresponsive polysulfone membrane using an environmental friendly technology." Green Chemistry. 2009;11(5):638-645. AbstractWebsite
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Barroso T, Temtem M, Casimiro T, Aguiar-Ricardo A. "Development of pH-responsive poly(methylmethacrylate-co-methacrylic acid) membranes using scCO2 technology. Application to protein permeation." Journal of Supercritical Fluids. 2009;51(1):57-66. AbstractWebsite
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2007
Brás ARE, Henriques S, Casimiro T, Aguiar-Ricardo A, Sotomayor J, CALDEIRA J, Santos C, Dionísio M. "Characterization of a nematic mixture by reversed-phase HPLC and UV spectroscopy: An application to phase behaviour studies in liquid crystal-CO2 systems." Liquid Crystals. 2007;34(5):591-597. AbstractWebsite
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2005
Brás ARE, Casimiro T, CALDEIRA J, Aguiar-Ricardo A. "Solubility of the nematic liquid crystal E7 in supercritical carbon dioxide." Journal of Chemical and Engineering Data. 2005;50(6):1857-1860. AbstractWebsite
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Casimiro T, Banet-Osuna AM, Ramos AM, da Ponte MN, Aguiar-Ricardo A. "Synthesis of highly cross-linked poly(diethylene glycol dimethacrylate) microparticles in supercritical carbon dioxide." European Polymer Journal. 2005;41(9):1947-1953. AbstractWebsite
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1992
Ricardo AA, Barreiros SF, Nunes Da Ponte M, Albuquerque GMN, Calado JCG. "(p, Vm, T) of (0.476Ar + 0.524N2)(I) and the calculation of thermodynamic properties of liquid air." The Journal of Chemical Thermodynamics. 1992;24(12):1281-1291. AbstractWebsite
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