Institut Català d'Investigació Química (ICIQ): Envíos recientes
Mostrando ítems 41-60 de 1240
Lophine-benzazole molecular hybrids with dual emission and large Stokes shifts: Experimental and theoretical insights into ESIPT dynamics
Lophine-benzazole molecular hybrids were synthesized through an efficient tetracomponent condensation reaction involving benzil, benzaldehyde, ammonium acetate, and aminobenzazoles. The resulting compounds were characterized ...
Solid-state mechanochemical activation of anthracene–maleimide adducts: the influence of the polymer matrix
The repertoire of established mechanophores has been on a steady rise over the last few years, holding the promise of generating materials capable of delivering programmable, beneficial responses upon mechanical stimulation. ...
Co-Sensitized Solar Cell Achieves 13.7% Efficiency with Bis-Hexylthiophene Dyes
Efficient anti-aggregation and superb light harvesting in the combination of large and narrow energy gap photosensitizers play a crucial role in suppressing interfacial charge recombination in dye-sensitized solar cells ...
Ni-Catalyzed Reductive Coupling of Alkynes with Aziridines
Herein, we describe a Ni-catalyzed regioselective hydroalkenylation of alkynes with aziridines as coupling partners. This protocol allows access to homoallylic amines without recourse to stoichiometric amounts of well-defined ...
Advancing Noninvasive Therapeutic Drug Monitoring via a 3D Microstructured Aptasensing Platform
Therapeutic drug monitoring (TDM) typically involves inconvenient invasive blood sampling. Sweat has been identified as an alternative biofluid that offers a convenient, noninvasive solution for real-time monitoring, ...
Catalytic Oxidative Ligand Transfer of Rh-Carbynoids and Alkyl Iodides
Herein, we disclose the first catalytic generation of alkyl–I(III) Rh(II)-carbynoids via oxidative ligand transfer between alkyl iodides and aryl–I(III) Rh(II)-carbynoids. When homoallylic iodides were used, alkyl–I(III) ...
Transfer learning with domain knowledge adaptation for stability evaluation of dual-atom catalysts on nitrogen-doped carbon
Dual-atom catalysts are innovative materials, with exceptional activity and selectivity. Yet, their stability remains a key challenge in catalyst design. Conventional characterization and synthesis techniques struggle to ...
Energy-Efficient and Scalable Joule Heating Synthesis of Self-Standing Transition Metal Phosphide Electrodes for Full Water Splitting
Transition metal phosphides (TMPs) show promise as low-cost (pre)electrocatalysts for water splitting and other energy-related applications. However, their traditional synthesis methods face challenges in energy consumption, ...
Acceleration and Regioselectivity Switching in 1,3-Dipolar Cycloaddition Reactions Confined in A Bis-Calix[4]pyrrole Cage
We report the results of our investigations on the role of the octa-imine bis-calix[4]pyrrole cage 1 in mediating confined 1,3-dipolar cycloaddition reactions of a series of 4-azido(alkyl)-pyridine-N-oxides (alkyl = null, ...
Controlling hydrocarbon chain growth and degree of branching in CO2 electroreduction on fluorine-doped nickel catalysts
Nickel-based materials can facilitate the electrocatalytic CO2 reduction (CO2R) reaction to generate hydrocarbons up to C6. Here we show that fluorine doping alters the nature of the Ni active sites, which proves instrumental ...
Tailored-Designed Ligands for Enantioselective Gold(I)-Catalyzed Activation of Alkynes
In this Account we describe the work performed at our laboratories over the years in the design and applications of novel chiral ligands for the enantioselective gold(I)-catalyzed activation of alkynes, with a focus on the ...
DOSY NMR Experiments at Variable Temperature. A Thorough Analysis of Optimal Conditions for Reliable Results
Multinuclear (1H, 31P, and 19F) DOSY technique has been used under variable temperature conditions, in order to establish the optimal conditions for obtaining reliable data at variable temperatures, while keeping experimental ...
Rh-Catalyzed Atroposelective Single-Carbon Insertion
Single-carbon insertion processes have gained considerable momentum over the past few years. Although innovative methods have emerged for converting indole or indene into quinoline or naphthalene cores, the enantioselective ...
Lanthanoid-doped BiVO4 microswimmers with built-in photon upconversion and light-driven motion
We report a one-step synthesis of lanthanoid-doped BiVO4 microswimmers that integrate photon upconversion and light-driven propulsion within a single particle. Yb3+/Er3+ doping enables near-infrared-to-visible upconversion, ...
Proton Relay Catalysis Enables the Synthesis of 2-Oxa- and 2-Azabicyclo[2.2.1]heptanes
An effective binary catalytic system enables the synthesis of oxa- and aza-bicyclo[2.2.1]heptanes from cyclic γ-epoxy-alcohols. A combination of an aminotriphenolate Al(III) complex and a bromide salt delivers a wide variety ...
Light-Driven Chemical Cascade Reduces Barriers to Hydrogen Production
Photocatalysis offers an opportunity for sustainable hydrogen and chemical production. Traditional systems require semiconductors with very specific conduction-band (CB) properties and expensive noble metal cocatalysts, ...
Rh-catalysed single-carbon insertion to 1,3-dienes
Herein, we report the first catalytic single-carbon insertion to 1,3-dienes with Rh(II)-carbynoids. The skeletal editing process is based on the catalytic generation of a Rh-carbynoid that promotes the insertion of a ...
Uncovering Polyoxometalate Speciation in Hydrothermal Systems by Combining Computational Simulation with X-ray Total Scattering
A systematic approach for understanding the pH-dependent speciation of molecular metal-oxide nanoclusters beyond ambient conditions, which combines computational predictions with X-ray total scattering experiments, is ...
Application of Naphthalenediimide Derivatives as Self-Assembled Electron Selective Contacts in CdSe@ZnS Quantum Dots LEDs
Despite the successful application of self-assembled molecules (SAMs) as hole-selective contacts in light-emitting diodes (LEDs), examples of the use of electron-selective SAMs are scarce. Here, we investigate the potential ...
Unraveling Charge Transport in Heterostructured Nanomotors for Efficient Photocatalytic Motion
Photocatalytic micro/nanomotors have emerged as promising tools for environmental remediation, biosensing, and targeted delivery. To enhance their light-driven propulsion, significant efforts have focused on engineering ...
