Institut Català d'Investigació Química (ICIQ): Envíos recientes
Mostrando ítems 81-100 de 1286
Customizable 3D-Printed SiC Photocatalysts for Microplastic Capture and Degradation under Flow and Static Conditions
The persistence of microplastics (MPs) in aquatic systems endangers both ecosystems and human health. Among emerging strategies, photocatalytic degradation using semiconductors is a promising approach to MP remediation. ...
Assessment of the Association Constant of the CO2@CB[6] Complex Combining 1H and 13C NMR Spectroscopic Titrations
A methodology for assessing the association constants of a molecular host binding a 13C-enriched gaseous guest, that is, 13CO2, using NMR spectroscopic titrations is described. The method relies on injecting the gaseous ...
Hybrid Molecular Photoanodes for Water Oxidation Based on Electropolymerized Cu Macrocyclic Complexes on BiVO4-WO3
The conversion of sunlight into chemical energy provides a sustainable alternative to fossil fuels that can significantly contribute to the mitigation of climate change. In this regard, water splitting with sunlight using ...
Carbonised porous silicon as scaffold and sensor for the electrochemical detection and characterisation of bacterial biofilm growth
The use of carbonised porous silicon (C-pSi) substrates as both scaffolds and electrodes for the electrochemical detection and characterisation of bacterial biofilm growth is reported for the first time. Three types of ...
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 ...
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. ...
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 ...
Thermometric Based-Microswimmers with Chemical and Optical Engines
The development of microswimmers with integrated sensing elements opens new avenues for advanced functionalities in microscale environments. Among these, temperature sensing is critical for applications ranging from ...
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 ...
Understanding the Deactivation of an Fe Single-Atom on Nitrogen-Doped Carbon Catalysts in Oxygen Reduction Reaction
Single-atom catalysts (SACs) have gained attention as potential replacements for the platinum-group metals (PGMs) in the oxygen reduction reaction (ORR), a fundamental reaction in renewable energy technologies. Among SACs, ...
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) ...
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, ...
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 ...
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 ...
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 ...
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, ...
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 ...
