Results 11 to 20 of about 858 (120)

Mechanistic Insights and Catalytic Efficiency of a 2,2'-Bipyridine-Coordinated Peroxidovanadium Complex as a Haloperoxidase Biomimetic. [PDF]

Chempluschem
A peroxidovanadium(V) complex mimics vanadium haloperoxidases for eco‐friendly halogenation of organic substrates. Density functional theory studies reveal two major reaction pathways for iodide/bromide oxidation. The catalyst offers high‐yield bromination/iodination of 8‐hydroxyquinoline (73/86%) under mild conditions (30 °C, pH 5.8), and it also ...
Fachini LG, Elisandro EVS, Baptistella GB, Bottini RCR, Briganti M, Nunes GG, de Sá EL.   +6 more
europepmc   +2 more sources

A utilização da ressonância magnética nuclear em Odontologia: revisão de literatura e relato de caso

Revista da Faculdade de Odontologia de Porto Alegre, 2020
Os autores revisam a literatura sobre a utilização da ressonância magnética nuclear em odontologia, seu estágio atual e suas perspectivas futuras, apresentando um caso clínico.
Vinícius D. Dutra, Heloísa E. da Silveira Fontoura, Vânia R. C. Fontanella   +2 more
doaj   +9 more sources

Structure-Function Relationship of the Disintegrin Family: Sequence Signature and Integrin Interaction

Frontiers in Molecular Biosciences, 2021
Disintegrins are small cysteine-rich proteins found in a variety of snake venom. These proteins selectively modulate integrin function, heterodimeric receptors involved in cell-cell and cell-matrix interaction that are widely studied as therapeutic ...
Ariana A. Vasconcelos, Ariana A. Vasconcelos, Jorge C. Estrada, Victor David, Luciana S. Wermelinger, Fabio C. L. Almeida, Fabio C. L. Almeida, Russolina B. Zingali   +7 more
doaj   +1 more source

Unravelling the Mechanistic Pathway of the Hydrogen Evolution Reaction Driven by a Cobalt Catalyst

Angewandte Chemie, Volume 134, Issue 40, October 4, 2022., 2022
A CoI complex bearing a redox‐active κ‐N3P2 pentadentate ligand and its activity towards hydrogen evolution reaction is reported in this work. A combination of spectroscopic, electrochemical and computational techniques is employed to characterize the intermediate species, demonstrating an unusual homolytic coupling reaction pathway between two ...
Bing Jiang, Marcos Gil‐Sepulcre, Pablo Garrido‐Barros, Carolina Gimbert‐Suriñach, Jia‐Wei Wang, Jordi Garcia‐Anton, Pau Nolis, Jordi Benet‐Buchholz, Nuria Romero, Xavier Sala, Antoni Llobet   +10 more
wiley   +2 more sources

(Bio)Functionalisation of Metal–Organic Polyhedra by Using Click Chemistry

Chemistry – A European Journal, Volume 29, Issue 60, October 26, 2023., 2023
Copper(I)‐catalysed alkyne‐azide cycloaddition click chemistry is a versatile post‐synthetic tool to functionalize the surface chemistry of alkyne‐functionalized cuboctahedral Metal–Organic Polyhedra (MOPs). This methodology enables quantitative functionalization of MOPs with a wide range of functional groups, including polymers, carboxylic and ...
Laura Hernández‐López, Cornelia von Baeckmann, Jordi Martínez‐Esaín, Alba Cortés‐Martínez, Jordi Faraudo, Caterina Caules, Teodor Parella, Daniel Maspoch, Arnau Carné‐Sánchez   +8 more
wiley   +1 more source

Synthese von C60/[10]CPP‐Catenanen durch Regioselektive Nanokapsel‐Templierte Bingel Bis‐Addition

Angewandte Chemie, Volume 135, Issue 42, October 16, 2023., 2023
Die Kombination von drei Methoden (Tether, Nanohoop‐Template und supramolekulare Schattenmaske) ermöglichte die itero‐ und regioselektive Synthese von [2]Catenanen durch Bis‐Addition von Bis‐Bromomalonaten an den Komplex C60⸦[10]CPP. Die Verwendung einer „spurlosen“ Nanokapsel‐Schattenmaske war der Schlüssel für eine 87 %ige Selektivität für das „in ...
Fabian M. Steudel, Ernest Ubasart, Luigi Leanza, Míriam Pujals, Teodor Parella, Giovanni M. Pavan, Xavi Ribas, Max von Delius   +7 more
wiley   +1 more source

Synthesis of C60/[10]CPP‐Catenanes by Regioselective, Nanocapsule‐Templated Bingel Bis‐Addition

Angewandte Chemie International Edition, Volume 62, Issue 42, October 16, 2023., 2023
The combination of three approaches (tether, nanohoop template & supramolecular shadow mask) enabled the itero‐ and regioselective synthesis of [2]catenanes via bis‐addition of bis‐bromomalonates to the complex C60⸦[10]CPP. The use of a “traceless” nanocapsule shadow mask was key for obtaining 87 % selectivity for the “in,out‐trans‐3′′ product, where ...
Fabian M. Steudel, Ernest Ubasart, Luigi Leanza, Míriam Pujals, Teodor Parella, Giovanni M. Pavan, Xavi Ribas, Max von Delius   +7 more
wiley   +1 more source

A Polymeric Nanoparticle Formulation for Targeted mRNA Delivery to Fibroblasts

Advanced Science, Volume 10, Issue 5, February 14, 2023., 2023
Messenger RNA (mRNA) is a promising tool to deliver therapeutic proteins in many diseases, including fibrotic disorders. Here, a polymeric nanoparticle formulation is developed after high‐throughput screening of 152 polymers in a fibroblast model.
Artur Filipe Rodrigues, Catarina Rebelo, Susana Simões, Cristiana Paulo, Sónia Pinho, Vítor Francisco, Lino Ferreira   +6 more
wiley   +1 more source

Glifosato: um problema da ciência e da tecnologia para a sociedade

Indagatio Didactica, 2019
Numa definição inicial - sempre é possível se complexificar as definições - podemos dizer que a Química é a ciência que estuda as substâncias, suas transformações e as energias envolvidas nelas. Daí depreende-se que o conceito de Reação Química é central
Andressa Kuhnen Silva, Luciano Morais Lião, Simone Maria Teixeira de Sabóia-Morais, Francisco Gambarra Neto, Agustina Rosa Echeverría   +4 more
doaj   +1 more source

Enrichment of hepatic glycogen and plasma glucose from H₂18O informs gluconeogenic and indirect pathway fluxes in naturally feeding mice

NMR in Biomedicine, Volume 36, Issue 2, February 2023., 2023
18O‐enrichment of liver glycogen, triglyceride glycerol, and blood glucose of mice given 18O‐water during overnight feeding was quantified by 13C NMR and MS. Glycogen 18O‐enrichment of oxygens 3, 5, and 6 from isotope‐shifted 13C signals informed indirect pathway contributions from different sources.
Margarida Coelho, Rohit Mahar, Getachew D. Belew, Alejandra Torres, Cristina Barosa, Fernando Cabral, Ivan Viegas, Amalia Gastaldelli, Vera M. Mendes, Bruno Manadas, John G. Jones, Matthew E. Merritt   +11 more
wiley   +1 more source