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A cost-effective combination of Rose Bengal and off-the-shelf cationicpolystyrene for the photodynamic inactivation ofPseudomonas aeruginosa
Arnau del Valle, Carla; Pérez-Laguna, Vanesa; Muñoz Resta, Ignacio; Gavara, Raquel; Felip-León, Carles; Miravet, Juan; Rezusta López, Antonio; Galindo, Francisco Elsevier (2020)Two new photoactive materials have been prepared, characterized and tested againstPseudomonas aeruginosabacteria (planktonic suspension). The synthesis of the polymeric photosensitizers can be made at a multigramscale, in ... -
A Dual Stimuli Responsive Supramolecular Gel Provides Insulin Hydrolysis Protection and Redox-Controlled Release of Actives
Navarro Barreda, Diego; Angulo-Pachón, César A.; Bedrina, Begoña; Galindo, Francisco; Miravet, Juan Wiley (2020)Two supramolecular hydrogelators containing a central disulfide moiety and terminal carboxylic acid groups are studied. On the one hand, the hydrogels are responsive to a reductive environment, which transforms the disulfide ... -
A spectroscopic study to assess the photogeneration of singlet oxygen by graphene oxide
Felip-León, Carles; Puche, Marta; Miravet, Juan; Galindo, Francisco; Feliz, Marta Elsevier (2019)The photogeneration of singlet oxygen (1 O2) during short irradiation times of graphene oxide (GO) is assessed under visible light with soft irradiation conditions either directly monitoring the phosphorescence emission ... -
A supramolecular hydrogel as a reusable heterogeneous catalyst for the direct aldol reaction
Rodríguez Llansola, Francisco; Miravet, Juan; Escuder, Beatriu Royal Society of Chemistry (2009)An L-proline based supramolecular hydrogel is used as an efficient heterogeneous organocatalyst for the direct aldol reaction with high stereoselectivity (up to 90% ee) and recyclability (up to 3 runs). The reversible ... -
Adsorption of Rose Bengal on a self-assembled fibrillar network affords a thermally switchable oxygenation photocatalyst and a thermochromic soft material
Arnau del Valle, Carla; Felip-León, Carles; Angulo-Pachón, César A.; Galindo, Francisco; Miravet, Juan Elsevier (2019-10-03)Rose Bengal (RB) can be homogeneously dispersed in dichloromethane by its adsorption on the fibrillar network of a molecular gel formed in this solvent. The RB loaded gel was visualized by confocal scanning laser microscopy, ... -
Alkaline cations dramatically control molecular hydrogelation by an amino acid-derived anionic amphiphile
Angulo-Pachón, César A.; Pozo, Víctor; Miravet, Juan Elsevier (2023-01-03)Understanding the factors that control the formation of (supra)molecular hydrogels permits a rational tuning of their properties and represents a primary challenge for developing smart biocompatible soft materials. Hydrogel ... -
Anion-Responsive Diguanidinium-Based Chiral Organogelators
Valero, Julián; Escuder, Beatriu; Miravet, Juan; Mendoza, Javier de Wiley (2012-10)The chiral bicyclic diguanidinium chloride 1 forms gels in aromatic apolar solvents. The gels were characterized at different levels of organization, from the macroscopic to the molecular level by using microscopy, ... -
Biomimetic self-assembly of tetrapeptides into fibrillar networks and organogels
Iqbal, Sajid; Miravet, Juan; Escuder, Beatriu WILEY-VCH (2008)The self-assembly features of a family of tetrapeptides inspired in silk structure are presented. An exhaustive study of the influence of the terminal alkyl chain length in this process is undertaken. Scanning electron ... -
Broad-Spectrum Photo-Antimicrobial Polymers Based on Cationic Polystyrene and Rose Bengal
Gavara, Raquel; de Llanos Frutos, Rosa; Pérez Laguna, Vanesa; Arnau del Valle, Carla; Miravet, Juan; Rezusta López, Antonio; Galindo, Francisco Frontiers Media (2021-05-24)New strategies to fight bacteria and fungi are necessary in view of the problem of iatrogenic and nosocomial infections combined with the growing threat of increased antimicrobial resistance. Recently, our group has prepared ... -
Chameleonic, Light Harvesting Photonic Gels Based on Orthogonal Molecular Fibrillization
Felip-León, Carles; Diaz-Oltra, Santiago; Galindo, Francisco; Miravet, Juan American Chemical Society (2016-10)The preparation of smart photonic gels composed of two orthogonally self-assembled fibrillar networks is reported. The molecular gelators are a light acceptor derived from 4-amino-1,8-naphthalimide and an acridine-based ... -
Co-assembly of tetrapeptides into complex pH-responsive molecular hydrogel networks
Tena Solsona, Marta; Alonso de Castro, S.; Miravet, Juan; Escuder, Beatriu Royal Society of Chemistry (2014-07)Here we prepare pH-responsive complex molecular hydrogels from oppositely charged tetrapeptidic components that can be pH-tuned resulting in interconversion between different networks. Two different systems are described ... -
Control of molecular gelation by chemical stimuli
Segarra Maset, María Dolores; Nebot Carda, Vicent J.; Miravet, Juan; Escuder, Beatriu Royal Society of Chemistry (2012-12-21)Molecular gels are formed by the self-assembly of low-molecular weight compounds by weak non-covalent interactions and thus, they may be easily disassembled in response to external stimuli. Chemically sensitive gels can ... -
Cuestiones previas en Aula Virtual en los laboratorios de Química Orgánica
Rodríguez, Santiago; González, Florenci; Bou Iserte, Lledó; Miravet, Juan; Agost Beltrán, Laura; de la hoz rodriguez, Sergio; Fernández de la Pradilla Ibáñez, Adrián Colegio Oficial de Químicos de Galicia (2023-05-18)En las prácticas de laboratorio de las asignaturas de Química Orgánica es habitual introducir en el guion de prácticas una serie de preguntas previas que acompañan a la descripción de los experimentos y procedimientos ... -
Deamidation of pseudopeptidic molecular hydrogelators and its application to controlled release
Angulo-Pachón, César A.; Navarro Barreda, Diego; Rueda, Celia M.; Galindo, Francisco; Miravet, Juan Elsevier (2017-07)Hypothesis The incorporation of a succinic acid-derived moiety in amino acid derivatives would favor an intramolecular catalysis of a deamidation reaction. Such reaction would permit controlled disassembly of molecular ... -
Diamine acylation with amino acid derivatives: an example of proximity effect in organic reactivity induced by supramolecular aggregation
Felip-León, Carles; Segarra Maset, María Dolores; Escuder, Beatriu; Miravet, Juan Elsevier (2015-02)Unexpected high yields of diamide 3 are obtained in the reaction of 1,3-propanediamine with an activated ester of l-valine (1) under adverse proportions of the reactants, namely in the presence of an excess of 1,3-propanediamine. ... -
Dynamic Peptide Library for the Discovery of Charge Transfer Hydrogels
Berdugo Gumbau, Cristina; Nalluri, Siva Krishna Mohan; Javid, Nadeem; Escuder, Beatriu; Miravet, Juan; Ulijn, R. V. ACS Publications (2015)Coupling of peptide self-assembly to dynamic sequence exchange provides a useful approach for the discovery of self-assembling materials. In here, we demonstrate the discovery and optimization of aqueous, gel-phase ... -
Enhancement of photoactivity and cellular uptake of (Bu4N)2[Mo6I8(CH3COO)6] complex by loading on porous MCM-41 support. Photodynamic studies as an anticancer agent
de la Torre, Cristina; Gavara, Raquel; García-Fernández, Alba; Mikhaylov, Maxim; Sokolov, Maxim N.; Miravet, Juan; Sancenón, Félix; Martínez Máñez, Ramón; Galindo, Francisco Elsevier (2022-09)The incorporation by ionic assembly of the hexanuclear molybdenum cluster (Bu4N)2[Mo6I8(CH3CO2)6] (1) in amino-decorated mesoporous silica nanoparticles MCM-41, has yielded the new molybdenum-based hybrid photosensitizer ... -
Freezing Capture of Polymorphic Aggregates of Bolaamphiphilic L-Valine-Based Molecular Hydrogelators
Nebot Carda, Vicent J.; Diaz-Oltra, Santiago; Smets, Johan; Fernández Prieto, Susana; Miravet, Juan; Escuder, Beatriu WILEY-VCH Verlag GmbH & Co. KGaA (2014-05)Nanostructured xerogels have been prepared by the freeze-drying of hydrogels and aggregates formed by bolaamphiphilic l-valine derivatives after aging under different environmental conditions. A wide variety of shapes and ... -
Glutathione-responsive molecular nanoparticles from a dianionic bolaamphiphile and their use as carriers for targeted delivery
Navarro Barreda, Diego; Bedrina Broch, Begoña; Galindo, Francisco; Miravet, Juan Elsevier (2021-11-06)The formation in aqueous media of molecular nanoparticles from a bolaamphiphile (SucIleCsa) incorporating a disulfide moiety is described. The particles can be loaded efficiently with the lipophilic mitochondrial marker ... -
High Optical Performance of Cyan‐Emissive CsPbBr3 Perovskite Quantum Dots Embedded in Molecular Organogels
Vallés Pelarda, Marta; Gualdrón Reyes, Andrés Fabián; Felip-León, Carles; Angulo-Pachón, César A.; Agouram, Said; Muñoz-Sanjosé, Vicente; Miravet, Juan; Galindo, Francisco; Mora-Sero, Ivan Wiley (2021)Perovskite quantum dots (PQDs) have fascinating optoelectronic properties, such as high photoluminescence quantum yield (PLQY) for a broad range of materials, and the possibility to obtain different bandgaps with the same ...