16th May 2020
"Anti-inflammatory cotton fabrics and silica nanoparticles with potential topical medical applications" has been published in ACS Applied Materials & Interfaces by Hao Li, Dr. Granados, Prof. Pleixats and Prof. Vallribera.
Congratulations to the hole group!
Abstract: The preparation of functional cotton fabrics and silica nanoparticles by direct covalent linking of non-steroidal anti-inflammatory drugs (salicylic acid, ibuprofen and diclofenac) through an amide group is reported. Moreover, the coating of cotton fabrics with silica nanoparticles functionalized with such antiinflamatory agents is found to increase the roughness of the surface, providing hydrophobicity to the modified fabrics. This property is enhanced by the addition of fluorinated alkyl silane (FAS) in the co-condensation process to form the coating solution. Characterization of the functionalized nanoparticles and cotton textiles is accomplished by microscopic and spectroscopic techniques. The treatment of functionalized nanoparticles and cotton fabrics with model proteases and leukocytes from animal origin results in the in situ release of the drug by the selective enzymatic cleavage of the amide bond. Topical cutaneous applications in wound dressings and cream formulations for the acceleration of wound healing are envisaged.
Link to the full article: https://pubs.acs.org/doi/10.1021/acsami.0c06629
14th May 2020
Dr. Albert Granados in collaboration with the NMR Service of UAB have published a journal article entilted "Evidence of enantiomers of spiroglycol (SPG). Distinction by using α,α’-bis(trifluoromethyl)-9,10-anthracenedimethanol (ABTE) as Chiral Solvating Agent and by derivatization with chiral acids" in the Journal of Organic Chemistry. More information in the following link: https://pubs.acs.org/doi/10.1021/acs.joc.0c00578
27th April 2020
Guillem Fernández and Prof. Pleixats have published their work entitled "Gold nanoparticles stabilized by PEG-tagged imidazolium salts as recyclable catalysts for the synthesis of propargylamines and the cycloisomerization of γ-alkynoic acids" in New Journal of Chemistry. They also have contributed with a Cover Feature:
More information: http://grupsderecerca.uab.cat/catsynanomat/node/171
31st March 2020.
Hao Li and Prof. Roser Pleixats have published a new work entitled "Preparation and Characterization of Novel Mixed Periodic Mesoporous Organosilica Nanoparticles". In Materials Journal.
More information: https://www.mdpi.com/1996-1944/13/7/1569
24th February 2020.
Hao Li and Prof. Roser Pleixats have published a new work entitled "Periodic Mesoporous Organosilica Nanoparticles with BOC Group, towards HIFU Responsive Agents", in Molecules journal.
More information: https://www.mdpi.com/1420-3049/25/4/974
7th January 2020
Dr. Albert Granados and Prof. Adelina Vallribera publish their work in The Journal of Organic Chemistry entitled "A stepwise mechanism for the bromination of arenes by a hypervalent iodine reagent" in collaboration with Prof. Fernando P. Cossío, Dr. Ana Arrieta (EHU) and Dr. A. Shafir (IQAC).
More information: https://pubs.acs.org/doi/10.1021/acs.joc.9b02784
1st October 2019
The PhD student Hao Li and Prof. Roser Pleixats have published their work entilted "Recyclable Mesoporous Organosilica Nanoparticles Derived from Proline-Valinol Amides for Asymmetric Organocatalysis" in ACS Sustainable Chem. Eng.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/170
16th June 2019
The work entilted "Triazine mediated covalent antibiotic grafting on cotton fabrics as a modular approach for developing antimicrobial barriers" has been published in Cellulose journal. Congratulations to the group.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/169
6th June 2019
We will assist to the International School on Organometallic Chemistry “Marcial Moreno Mañas” in Castellón next week. Dr. Albert Granados will give a talk with the title: "Adventures with hypervalent iodine reagents"
31st May 2019
The work entitled "Fluorous hydrophobic fluorescent (E)-Stilbene derivatives for application on security paper" has been publsihed in Dyes and Pigments Journal by Dr. Granados and Prof. Vallribera.
In this manuscript some (E)-Stilbene hydrophobic fluorophores possessing long perfluorinated or hydrocarbonated chains have been prepared through a stereoselective Wittig-Schlosser reaction. When covalently grafted upon paper, they give rise to a fluorescent-labeled paper upon irradiation with UV light. The hydrophobicity and oleophobicity of the fluorous (E)-stilbene derivative furnish self-cleaning properties. Application in the detection of money counterfeiting is envisioned.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/168
30th April 2019
La La Ligand! Lanthanum(III) complexes incorporating enantiopure PyBOX ligands are suitable catalysts for the enantioselective trifluoromethylation of β‐oxo esters in the presence of hypervalent iodine Togni reagent. DFT calculations reveal that the enantioselectivity of the reaction stems from the rigid coordination pattern around the metallic center that results in the efficient blockage of one of the prochiral faces of the intermediate LaIII enolate. More information can be found in the Communication by F. P. Cossío, A. Vallribera. http://grupsderecerca.uab.cat/catsynanomat/node/167
22nd March 2019
"Lanthanum‐Catalyzed Enantioselective Trifluoromethylation using Electrophilic Hypervalent Iodine Reagent" has been published in Chemistry - A European Journal by Prof. Vallribera and Dr. A. Granados in collaboration with Prof. F. P. Cossío.
A highly enantioselective catalytic method for the synthesis of quaternary α‐trifluoromethyl derivatives of 3‐oxo esters is described. The reaction uses lanthanum (III) triflate and chiral pybox‐type C2‐symmetric ligands to generate intermediate La(III) complexes that incorporate an enolate moiety of the starting 3‐oxo ester and the trifluoromethyl transfer reagent. The enantioselectivity of the reaction stems from the efficient blockage of one of the prochiral faces of the La(III) enolate by one unit of the C2‐symmetric ligand.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/167
22nd March 2019
Dr. Albert Granados, Pau Sarró and Prof. Adelina have published a journal article entitled "Catalytic Asymmetric Fluorination of Alkyl 1-indanone-2-carboxylates Ruled by Pybox-Eu(III) Combination". This work has been published in the special issue "Lanthanides: New Trends and Applications" from an invitation from Molecules Journal.
Congratulations to all
More information: http://grupsderecerca.uab.cat/catsynanomat/node/166
18th March 2019
Prof. Vallribera and Dr. Granados have published their work entitled "In-situ Generation of Hypervalent Iodine Reagents for the Electrophilic Chlorination of Arenes" in European Journal of Organic Chemistry.
Further information: http://grupsderecerca.uab.cat/catsynanomat/node/165
22nd November 2018
Antibiotic protected silver nanoparticles for microbicidal cotton has been published in Tetrahedron. Congratulations to the hole group.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/164
6th November 2018
New journal article has been published in ChemistrySelect by G. Fernández and Prof. Pleixats.
Abstract: Soluble platinum nanoparticles (Pt NPs) have been prepared by a two‐step procedure involving the reduction of chloroplatinic acid with ethylene glycol/NaOH at 160 °C and subsequent treatment with a THF solution of a tris‐imidazolium tetrafluoroborate at room temperature. The isolated Pt NPs have been characterized by transmission electron microscopy (TEM), high‐resolution transmission electron microscopy (HRTEM), electron diffraction (ED), Energy‐Dispersive X‐ray Spectroscopy (EDS), and elemental analysis. They proved to be efficient and recoverable catalysts for the stereoselective hydrosilylation of internal alkynes in the presence and absence of solvent.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/160
3rd November 2018
"Cationic cellulose nanofibrils as a green support of palladium nanoparticles: catalyst evaluation in Suzuki reactions" has been published in Cellulose Journal. This work has been done in collaboration with researchers from the Laboratory of Interfaces and Advanced Materials, University of Monastir, Boulevard of the Environment in Tunisia.
More information about the publication: http://grupsderecerca.uab.cat/catsynanomat/node/159
19th October 2018
Prof. Vallribera publishes her work related with the use of fluoro-tagged osmium and iridium nanoparticles. This is work has been published in an special issue in honour of Prof. Léon Ghosez in Tetrahedron.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/158
21st September 2018
Guillem Fernández and Prof. Pleixats publish their recent work in ChemistrySelect Journal. This article is related with the synthesis and uses of nickel nanoparticles stabilized with trisimidazolium salts. These nanomaterials prove efficient as magnetically recoverable catalysts for the transfer hydrogenation of nitroarenes with hydrazine as hydrogen donor.
More information: http://grupsderecerca.uab.cat/catsynanomat/node/157
22nd June 2018
Guillem Fernández and Dr. Albert Granados have attended to the XXVII Reunión Bienal en Santiago de Compostela. Both have presented an oral flash communications.
10th April 2018
Today, Albert Granados has achieved the Doctor Degree in Chemistry at the UAB under the supervision of Professor Adelina Vallribera. The thesis court was composed by Dr. Ona Illa from UAB, Prof. José Miguel Sansano from the UA and by Prof. Rosario Fernández from the US.
Albert good luck in the future and congratulations!!!
From left lo right: Prof. A. Vallribera, Dr. O. Illa, Dr. A. Granados, Prof. R. Fernández and Prof. J. M. Sansano
31st January 2018
A. Granados and G. Fernández, both have presented an oral comunication in IX Trobada de Joves Investigadors dels Païssos Catalans celebrated in IEC (Barcelona).
22nd December 2017
Albert Granados and Prof. Adelina Vallribera have published their work related with the synthesis of "Fluorous L‑Carbidopa Precursors: Highly Enantioselective Synthesis and Computational Prediction of Bioactivity" in the Journal of Organic Chemistry (http://pubs.acs.org/doi/full/10.1021/acs.joc.7b02685)
13th November 2017
Prof. Adelina Vallribera has been invited to Universidad del País Vasco to explain her chemistry in an Advanced Seminar for PhD students. Her lecture will take place on 17th November at 16.00h
29th September 2017
Today Ana Maria Montagut has achieved the Doctor degree of Chemistry at the UAB. The thesis court was composed by Dr. Thierry Billard of the University of Lyon, Dr. Victorio Cadierno of the University of Oviedo and by Professor Roser Pleixats of the UAB.
Ana Maria good luck in the future! Congratulations!!!
From left to right: Dr. Billard, Prof. Pleixats, Dr. Montagut, Prof. Vallribera, Dr. Sebastián and Dr. Cadierno
31st July 2017
Have a good holidays!! See you in September with more Organic Chemistry
8th July 2017
This event is an annual activity organized by the ORFEO-CINQA team. The meeting aims to get together young students, early career researchers and well recognized, world-leading scientists from academy and industry, to facilitate and generate exchange of scientific information and knowledge.
In this event A. Granados presented a flash comunication entitled "Fluorescent paper: straightofrward synthesis of new (E)-2,5-dihydroxysubstituted-4'-hydroxystilbenes"
G. Fernández presented "Synthesis and Catalytic Applications of Platinum Nanoparticles Stabilized by Trisimidazolium Tetrafluoroborate"
H. Li presented "Studies Towards the Preparation of Mesoporous Organosilica Nanoparticles for Biomedical Applications"
30th June 2017
Prof. R. Pleixats, Prof. A. Vallribera, A. Granados, G. Fernández and H. Li attend to the XXXVI Reunión Bienal de la Real Sociedad Española de Química in Sitges (Barcelona)
R.Pleixats presented a poster entitled: "RECYCLABLE SILICA-SUPPORTED PROLINE SULPHONAMIDE ORGANOCATALYSTS FOR ASYMMETRIC DIRECT ALDOL REACTION"
A. Vallribera presented a poster entitled: "NANOANTIBIOTICS"
A. Granados presented an oral flash communication in Organic Synthesis symphosium entitled: "STRAIGHTFORWARD SYNTHESIS OF NEW FLUORESCENT (E)-STILBENES DERIVATIVES FOR APPLICATION ON HIGH ADDED VALUE PAPER"
G. Fernández presented a poster entilted: "HYDROSILYLATION OF INTERNAL ALKYNES CATALYZED BY RHODIUM NANOPARTICLES STABILIZED BY PEG-TAGGED IMIDAZOLIUM SALT"
H. Li presented a poster entitled: "KINETIC RESOLUTION OF 5-SUBSTITUTED CYCLOHEX-2-ENOLS BY PALLADIUM CATALYZED ASYMMETRIC REDOX-RELAY HECK REACTION"
17th May 2017
Dr. Adelina becomes Full Professor of Organic Chemistry
Ana Maria Montagut and her supervisors (Prof. Vallribera and Dr. Sebastián) have published "Triarylmethane dyes for artificial repellent cotton fibers" in Chemistry a European Journal. For further info: http://grupsderecerca.uab.cat/catsynanomat/node/155
20th December 2016
Prof. Roser Pleixats publish "Recyclable Silica-Supported Proline Sulphonamide Organocatalysts for Asymmetric Direct Aldol Reaction" in ChemistrySelect journal. For further information: http://grupsderecerca.uab.cat/catsynanomat/node/154