19 documents found, page 1 of 2
In Vitro Antimicrobial Studies of Mesoporous Silica Nanoparticles Comprising An...
Filipe, Luís; Sousa, Telma; Silva, Dário; Santos, Miguel; Ribeiro Carrott, Manuela; Poeta, Patrícia; Branco, Luís; Gago, SandraThe combination of active pharmaceutical ingredients in the form of ionic liquids or organic salts (API-OSILs) with mesoporous silica nanoparticles (MSNs) as drug carriers can provide a useful tool in enhancing the capabilities of current antibiotics, especially against resistant strains of bacteria. In this publication, the preparation of a set of three nanomaterials based on the modification of a MSN surface ...
Lanthanide-based organic salts: Synthesis, characterization, and cytotoxicity s...
Forte, Andreia; Gago, Sandra; Alves, Celso; Silva, Joana; Pedrosa, Rui; Laia, César A.T.; Marrucho, Isabel M.; Branco, Luis C.The formulation of magnetic ionic liquids (MILs) or organic salts based on lanthanides as anions has been explored. In this work, a set of choline-family-based salts, and two other, different cation families, were combined with Gadolinium(III) and Terbium(III) anions. Synthetic methodologies were previously optimized, and all organic salts were obtained as solids with melting temperatures higher than 100 °C. Th...
Ambipolar Pentacyclic Diamides with Interesting Electrochemical and Optoelectro...
Marques, Carolina S.; Cruz, Hugo; Lawrence, Simon E.; Gago, Sandra; Ramalho, João P. Prates; Morgado, Jorge; Branco, Luís C.; Burke, Anthony J.Developing organic semiconductors (OSCs) for organic thin film transistors (OTFT) and optoelectronic applications is a challenge. We developed highly crystalline pentacyclic diamides (3) and (4) which showed good OTFT and OLED potential and energy gaps of 2.60 eV and 2.54 eV. They exhibited interesting photo and eletroluminescence activity. Both compounds showed good quantum yields (0.56 for (3) and 0.6 for (4)).
Boosting antimicrobial activity of ciprofloxacin by functionalization of mesopo...
Mora, Blanca de Juan; Filipe, Luís; Forte, Andreia; Santos, Miguel M.; Alves, Celso; Teodoro, Fernando; Pedrosa, Rui; Ribeiro Carrott, ManuelaMesoporous silica nanoparticles (MSNs) are very promising nanomaterials for treating bacterial infections when combined with pharmaceutical drugs. Herein, we report the preparation of two nanomaterials based on the immobilization of ciprofloxacin in mesoporous silica nanoparticles,either as the counter-ion of the choline derivative cation MSN-[Ch][Cip]) or via anchoring on the surface of amino-group modified MS...
Mesoporous silica nanoparticles with manganese and lanthanide salts: synthesis,...
Forte, Andreia; Gago, Sandra; Ribeiro Carrott, Manuela; Carrott, Peter; Alves, Celso; Teodoro, Fernando; Pedrosa, Rui; Marrucho, Isabel; Branco, LuísSeveral organic salts based on the combination of two different choline derivative cations and [MnCl3]-, [GdCl4]- and [TbCl4]- as anions, were immobilized in mesoporous silica nanoparticles (MSNs) by a two-step synthetic method. Firstly, MSNs were functionalized with choline derivative cations with chloride anions and then the metals were incorporated by the reaction of the chloride with the respective metal ch...
Ambipolar Pentacyclic Diamides with Interesting Electrochemical and Optoelectro...
Burke, aNTHONY; Marques, CS; Ramalho, JP; Branco, L; Gago, Sandra; Cruz, Hugo; Lawrence, S; Morgado, JDeveloping organic semiconductors for organic thin film transistors (OTFT) and optoelectronic applications is a challenge. We developed highly crystalline pentacyclic diimides (3) and (4) which showed good OTFT and OLED potential and energy gaps of 2.60 eV and 2.54 eV. They exhibited interesting photo and eletroluminescence activity. Both compounds showed good quantum yields (0.56 for (3) and 0.60 for (4)).
Mesoporous silica nanoparticles with manganese and lanthanide salts: synthesis,...
Forte, Andreia; Gago, Sandra; Carrott, Manuela Ribeiro; Carrott, Peter; Alves, Celso; Teodoro, Fernando; Pedrosa, Rui; Marrucho, Isabel M.Several organic salts based on the combination of two different choline derivative cations and MnCl3−, GdCl4− and TbCl4− as anions were immobilized in mesoporous silica nanoparticles (MSNs) by a two-step synthetic method. Firstly, MSNs were functionalized with choline derivative cations with chloride anions and then the metals were incorporated by the reaction of the chloride with the respective metal chloride ...
Boosting antimicrobial activity of ciprofloxacin by functionalization of mesopo...
Juan Mora, Blanca de; Filipe, Luís; Forte, Andreia; Santos, Miguel M.; Alves, Celso; Teodoro, Fernando; Pedrosa, Rui; Carrott, Manuela RibeiroMesoporous silica nanoparticles (MSNs) are very promising nanomaterials for treating bacterial infections when combined with pharmaceutical drugs. Herein, we report the preparation of two nanomaterials based on the immobilization of ciprofloxacin in mesoporous silica nanoparticles, either as the counter-ion of the choline derivative cation (MSN-[Ch][Cip]) or via anchoring on the surface of amino-group modified ...
Intercalation of (η5-Pentamethylcyclopentadienyl)trioxomolybdenum(VI) in a Laye...
Gomes, Ana C.; Neves, Patrícia; Gago, Sandra; Valente, Anabela A.; Gonçalves, Isabel S.; Pillinger, MartynA Zn,Al layered double hydroxide (LDH) with [Cp*MoO3]– (Cp* = η5‐C5Me5) anions in the interlayer has been prepared by a direct coprecipitation method. The intercalated LDH and the mixed metal oxide (MMO) obtained after its calcination were characterized by elemental and thermogravimetric analyses, powder X‐ray diffraction (PXRD), FT‐IR and FT‐Raman spectroscopy, 13C and 27Al MAS NMR, and scanning electron micro...
Mesoporous nanosilica-supported polyoxomolybdate as catalysts for sustainable d...
Mirante, Fátima; Gomes, Neide; Branco, Luís C.; Cunha-Silva, Luís; Almeida, Pedro L.; Pillinger, Martyn; Gago, Sandra; Granadeiro, Carlos M.Mesoporous silica nanoparticles (MSNs) strategically functionalized were used to immobilize a homogeneous polyoxomolybdate catalyst [PMo12O40]3- (PMo12), active but unstable. The PMo12@TBA-MSN composite (where TBA refers to surface-tethered tributylammonium groups) conferred high stability to the polyoxomolybdate catalytic center and displayed an increase in efficiency for the oxidative desulfurization (ECODS) ...