Institut Català d'Investigació Química (ICIQ): Envíos recientes
Mostrando ítems 141-160 de 1286
Understanding the divergence in outcomes between mechanochemical and solution phase reactivity of fullerenes
Here, we report a rationalization of the reaction between buckminsterfullerene, C60, and alkali metal cyanides, which has long been known to switch from an exclusive formation of the cyanofulleride anion when in solution ...
Block copolymer-assembled nanopore arrays enable ultrasensitive label-free DNA detection
DNA detection via nanoporous-based electrochemical biosensors is a promising method for rapid pathogen identification and disease diagnosis. These sensors detect electrical current variations caused by DNA hybridization ...
Voltammetric electronic tongue for the discrimination of antibiotic mixtures in tap water
The identification and quantification of antibiotics in different types of water is of growing interest due to the resistance their presence can induce in many bacterial species. Although the electrochemical analysis of ...
Highly Functional Allyl-Bicyclo[1.1.1]pentane Synthesis by Radical-Initiated Three-Component Stereoselective Allylation
Rapid access to highly functional allylated BCP synthons can be achieved with good selectivity and yield through a radical, three-component reaction (3CR) regime using various combinations of radical precursors and ...
Sulfur-Bridged Iron and Molybdenum Catalysts for Electrocatalytic Ammonia Synthesis
Carbon zero electrocatalytic nitrogen reduction reaction (NRR), converting N2 to NH3 under ambient temperature and pressure, offers a sustainable alternative to the energy-intensive Haber-Bosch process. Nevertheless, NRR ...
Catalytic Deoxygenation of Unactivated 1,2-Diol Motifs via Light-Induced Spin-Center Shift
Herein, we report a light-induced strategy that enables catalytic deoxygenation of unactivated aliphatic 1,2-diol derivatives via a spin-center shift (SCS) manifold. Divergent reactivity can be accomplished depending on ...
Molecular Balances as Physical Organic Chemistry Tools to Quantify Non-Covalent Interactions
Non-covalent interactions are present in numerous synthetic and biological systems, playing an essential role in vital life processes, such as the stabilization of proteins’ structures or reversible binding in substrate-receptor ...
From conventional to dual Co/photoredox mediated reductive coupling of alkynes and alkenes
Metal-catalyzed reductive coupling reactions between alkenes and alkynes are a long-standing tradition as a way to create complex unsaturated building blocks of value in organic synthesis ventures. Here, we review the ...
Coverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light–Emitting Diodes
Perovskite light–emitting diodes (PeLEDs) have emerged as a prominent topic within optoelectronic research. Despite remarkable advancements, this technology still faces challenges that must be addressed for successful ...
Practical Synthesis of Chiral Ferrocenenylphosphino-Gold(I) Catalysts and NEST Analysis of the Enantioinduction
The concise modular synthesis of a family of monodentate 1,2-disubstituted ferrocene ligands containing a diaryl phosphine and a 2-aryl indole is described. Their gold(I) complexes were applied to the enantioselective ...
Acceleration and Selectivity of 1,3-Dipolar Cycloaddition Reactions Included in a Polar [4 + 2] Octa-imine Bis-calix[4]pyrrole Cage
We describe the quantitative self-assembly (>90%) of a [4 + 2] octa-imine cage (1) in a CDCl3:CD3CN 9:1 solvent mixture containing 0.5% of acetic acid. Cage 1 is based on two identical aryl-extended calix[4]pyrrole units ...
Photochemical C–H Borylation in Organic Synthesis
Although C–H bond functionalization has been extensively studied since its discovery in 1955, the borylation of organic compounds by activating C–H bonds only became popular since the valuable discovery by Hartwig in 1995 ...
Diatomic Palladium Catalyst for Enhanced Photocatalytic Water-Donating Transfer Hydrogenation
Diatomic catalysts (DACs) present unique opportunities for harnessing ensemble effects between adjacent metal atoms, thus, expanding the properties of single-atom catalysts (SACs). However, the precise preparation and ...
Ligand-Induced Activation of Single-Atom Palladium Heterogeneous Catalysts for Cross-Coupling Reactions
Single-atom heterogeneous catalysts (SACs) are potential, recoverable alternatives to soluble organometallic complexes for cross-coupling reactions in fine-chemical synthesis. When developing SACs for these applications, ...
Single-Carbon Insertion into Single C–C Bonds with Diazirines
A novel platform for the skeletal editing of single C–C bonds via a single-carbon insertion has been developed using diazirines. This strategy involves the photogeneration of arylchlorocarbenes as carbynoid species that ...
Nickel Dynamics Switches the Selectivity of CO2 Hydrogenation
The Reverse Water Gas-Shift reaction (CO2+H2mathematical equation CO+H2O) allows to balance syn-gas under industrial conditions. Nickel has been suggested as a potential catalyst but the temperature required is too high, ...
Exploring Mg-Sn alloys as electrocatalysts for CO2 electroreduction
Tin is one of the most selective electrocatalysts for CO2 reduction (CO2RR), mostly thanks to its poor activity towards the hydrogen evolution reaction (HER). Still, Sn electrodes are limited by their very high overpotential. ...
Photocatalytic Multicomponent Carboxylation of Olefins and Sulfinate Salts with 13CO2
Herein, we describe a photoinduced multicomponent catalytic carboxylation protocol that streamlines the access to 13C-labeled carboxylic acids from simple olefin precursors, sulfinate salts and 13CO2. Site selectivity is ...
Dual-Energy Integration in Photoresponsive Micro/Nanomotors: From Strategic Design to Biomedical Applications
Micro/nanomotors (MNMs) are highly versatile small-scale devices capable of converting external energy inputs into active motion. Among the various energy sources, light stands out due to its abundance and ability to provide ...
