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Thiocoumarin-based Au(I) Complexes and Au(0) Systems over TiO as Hybrid Photocatalysts for Hydrogen Generation under UV-Vis Light.
Adv Sci (Weinh)
December 2024
Center for Research in Multiscale Science and Engineering and Department of Chemical Engineering, Institute of Energy Technologies, Universitat Politècnica de Catalunya (UPC), EEBE, Eduard Maristany 10-14, Barcelona, 08019, Spain.
This work focuses on the photocatalytic production of hydrogen from the photodehydrogenation of ethanol using several gold(I) complexes and gold(0) systems over titanium dioxide (P90 TiO) as hybrid photocatalysts. The photocatalytic systems are composed of at least one coumarin-based ligand, which can enhance the photocatalytic activity by its photon-absorbing capacity due to its chromophore properties. The photocatalytic behavior for hydrogen generation of the studied samples is compared under UV-vis light setting the total gold-based co-catalyst loading at 1 wt% onto the TiO photocatalysts and when the gold content is maintained at 0.
View Article and Find Full Text PDFEngineered non-invasive functionalized dendrimer/dendron-entrapped/complexed gold nanoparticles as a novel class of theranostic (radio)pharmaceuticals in cancer therapy.
J Control Release
April 2021
Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France; Université Toulouse 118 route de Narbonne, 31077 Toulouse Cedex 4, France. Electronic address:
Article Synopsis
- * The review focuses on the application of engineered hybrid dendrimer-tangled gold nanoparticles, which serve as effective drug carriers and imaging agents in cancer therapy.
- * Key topics include targeted imaging and treatment with dendrimer-entrapped gold nanoparticles, gene delivery, drug delivery systems, and the use of radioactive nanoparticles for radiotherapy.
Facile morphology control of gold(0) structures from aurophilic assemblies.
Dalton Trans
April 2020
Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain. and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain.
Article Synopsis
- Different gold microstructures were created using supramolecular gold(i) compounds as templates and silver nanoparticles as reducing agents.
- The type of supramolecular assembly—neutral or ionic—determines whether the resulting gold shapes are microrods or spherical/square prisms.
- Solvents and conditions like temperature and reaction time significantly impact the morphology of the gold structures, with chloroform yielding defined star-like shapes.
Immobilized Gold Nanoparticles Prepared from Gold(III)-Containing Ionic Liquids on Silica: Application to the Sustainable Synthesis of Propargylamines.
Molecules
November 2018
Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, 04120 Almería, Spain.
A cycloaurated phosphinothioic amide gold(III) complex was supported on amorphous silica with the aid of an imidazolium ionic liquid (IL) physisorbed in the SiO₂ pores (SiO₂⁻IL) and covalently bonded to the SiO₂ (SiO₂@IL). Gold(0) nanoparticles (AuNPs) were formed in situ and subsequently immobilized on the SiO₂⁻IL/SiO₂@IL phase. The resulting catalytic systems Au⁻SiO₂⁻IL and Au⁻SiO₂@IL promoted the solvent-free A³ coupling reaction of alkynes, aldehydes, and amines in high yields under solvent-free conditions with very low catalyst loading and without the use of additives.
View Article and Find Full Text PDFFemtosecond laser ablation synthesis of gold-aryl nanoparticles in solution was explored. Laser irradiation of the yellow solution of diazonium tetrachloroaurate(III) salt [C8F17-4-C6H4N≡N]AuCl4 in acetonitrile formed ruby red color of gold-aryl nanoparticles without the need for external chemical reducing agent. X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and nanodrop UV-Vis spectroscopy were used in the nanoparticles characterization.
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