A5083176499- Mesoporous Materials and Catalysis
- Silicone and Siloxane Chemistry
- Polyoxometalates: Synthesis and Applications
- Aerogels and thermal insulation
- Synthetic Organic Chemistry Methods
- Catalytic Cross-Coupling Reactions
- Synthesis and characterization of novel inorganic/organometallic compounds
- Porphyrin and Phthalocyanine Chemistry
- Advanced biosensing and bioanalysis techniques
- Advanced ceramic materials synthesis
- Inorganic Fluorides and Related Compounds
- Lanthanide and Transition Metal Complexes
- Chemical Synthesis and Reactions
- Nanoplatforms for cancer theranostics
- TiO2 Photocatalysis and Solar Cells
- Luminescence and Fluorescent Materials
- Catalysis and Oxidation Reactions
- Advanced Photocatalysis Techniques
- Asymmetric Hydrogenation and Catalysis
- Click Chemistry and Applications
- Asymmetric Synthesis and Catalysis
- Metal-Organic Frameworks: Synthesis and Applications
- Organometallic Complex Synthesis and Catalysis
- Luminescence Properties of Advanced Materials
- Organoboron and organosilicon chemistry
École Nationale Supérieure de Chimie de Montpellier
2015-2025
Centre National de la Recherche Scientifique
2014-2025
Université de Montpellier
2015-2025
Institut Charles Gerhardt Montpellier
2013-2024
Institut de Chimie
2008-2024
Centre Occitanie-Montpellier
2016-2017
École Normale Supérieure - PSL
2007-2014
Universitat Autònoma de Barcelona
2007-2013
Institute of Nanostructured Materials
2006
University of Padua
2006
Periodic Mesoporous Organosilica (PMO) nanomaterials are envisioned to be one of the most prolific subjects research in next decade.
Periodic mesoporous organosilica nanorods and nanospheres are synthesized from 1,4-bis(triethoxysilyl)ethylene bis(3-ethoxysilylpropyl)disulfide. The nanosystems present the long-range order of hexagonal nanostructure. They degraded in simulated physiological conditions. loading release doxorubicin with these both pH dependent. These nanoparticles endocytosed by breast cancer cells very efficient for delivery cells. As a service to our authors readers, this journal provides supporting...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew mixed organic-inorganic polymers: hydrolysis and polycondensation of bis(trimethoxysilyl)organometallic precursorsRobert J. P. Corriu, Joel E. Moreau, Philippe Thepot, Michel Wong Chi ManCite this: Chem. Mater. 1992, 4, 6, 1217–1224Publication Date (Print):November 1, 1992Publication History Published online1 May 2002Published inissue 1 November...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTSelf-Organized Hybrid Silica with Long-Range Ordered Lamellar StructureJoël J. E. Moreau, Luc Vellutini, Michel Wong Chi Man, Catherine Bied, Jean-Louis Bantignies, Philippe Dieudonné, and SauvajolView Author Information Hétérochimie Moléculaire et Macromoléculaire UMR 5076, Ecole Nationale Supérieure de Chimie Montpellier, 8 rue l'Ecole Normale 34296 Montpellier Cedex 05, France Groupe Dynamique des Phases Condensées 5581, Université II...
Hybrid materials are increasingly used for supporting homogeneous catalysts. This review describes the various methodologies to synthesize such hybrid or graft catalysts on inorganic supports. Applications of these reactions mediated by supported organometallic organic presented.
Review on organosilica-based materials in supported organocatalysis.
The best solution? A highly crystalline hybrid silica has been obtained through the hydrolysis of a precursor in solution phase. self-organized structure lamellar material consists diureido–phenylene bridging units (see picture); structural comparisons this and its molecular show existence similar hydrogen-bonding interactions both structures.
Abstract A new hybrid silica with urea‐based bipyridyl bridging units has been synthesized by a sol‐gel process. The copper‐complexed is an efficient heterogeneous catalyst for the Ullmann coupling of aryl halides phenols. It easily withdrawn and recovered from reaction media filtration. also versatile subsequent reactions several substrates yielding products same efficiency even after ten re‐uses minimal leaching. This first example use bridged silsesquioxane preparation recoverable in...
Two new urea-bipyridine derived bridged organosilanes (P5 and P6) have been synthesized their hydrolysis–condensation under nucleophilic catalysis in the presence of Eu3+ salts led to luminescent silsesquioxanes (M5-Eu M6-Eu). An important loading (up 11%w) can be obtained for material based on 6,6′-isomer. Indeed photoluminescence properties these materials, that investigated depth (photoluminescence (PL), quantum yield, lifetimes), show a significantly different complexation mode ions...
The sol-gel preparation of a bridged silsesquioxane containing europium(III) salts and 2-thenoyltrifluoroacetone has been achieved from new ethane tetracarboxamide-based organosilane. Free-standing films with thicknesses up to 440 μm maximum absolute quantum yield (q) 0.34 ± 0.03 (excitation at 320 nm) were prepared by the drop cast method, while thin (∼200-400 spin-coated on glass substrates led highly luminescent coatings q = 0.60 0.02 345 nm). tested as planar solar concentrators...
The design of hybrid multipodal PMO (mp-PMO) nanoparticles with crystal-like architectures elaborated in a one-pot, two-step process, involving the preparation benzene-based spherical core followed by formation ethylene-based rod-shaped pods on these cores is described.
Three dimensional sub-micron resolution has made two-photon nanomedicine a very promising medical tool for cancer treatment since current techniques cause significant side effects lack of spatial selectivity. Two-photon-excited (TPE) photodynamic therapy (PDT) been achieved via mesoporous nanoscaffolds, but the efficiency could still be improved. Herein, we demonstrate enhancement gold-mesoporous organosilica nanocomposites TPE-PDT in cells when compared to particles. We performed first...
Abstract Periodic mesoporous organosilica nanoparticles emerge as promising vectors for nanomedicine applications. Their properties are very different from those of well‐known silica there is no source their synthesis. So far, they have only been synthesized small bis‐silylated organic precursors. However, studies employing large stimuli‐responsive precursors reported on such hybrid systems yet. Here, the synthesis porphyrin‐based a octasilylated metalated porphyrin precursor described...
A new approach for the morphological control of bridged silsesquioxanes has been achieved by hydrolysis silylated organic molecules bearing urea groups. The groups are responsible auto-association through intermolecular hydrogen-bonding interactions. self-assembly leads to supramolecular architectures that have ability direct organization hybrid silicas under controlled hydrolysis. chiral diureido derivatives trans-(1,2)-diaminocyclohexane 1 basic conditions examined. solid-state NMR spectra...
The synthesis of four bis(trialkoxysilylated) organic molecules capable self-assembly--(EtO)3Si(CH2)3NHCONH-(CH2)n-NHCONH(CH2)3Si(OEt)3 (n = 9-12)--associating urea functional groups and alkylidene chains variable length is described. These compounds behave as organogelators, forming supramolecular assemblies thanks to the intermolecular hydrogen bonding groups. Whereas fluoride ion-catalysed hydrolysis in ethanol presence a stoichiometric amount water produced amorphous hybrids,...
A simple β-diamide ligand was immobilized by the sol–gel process on hybrid silica for Cu-mediated O-arylation reactions. Combined with 5% of CuI, latter can easily be recovered and reused to generate diarylethers under smooth conditions from cheap aryl bromides in an eco-friendly solvent (MIBK). Besides, negligible metal leaching occurred after reaction solution supported catalyst.
Abstract Hybrid silica materials containing the di‐(2‐pyridyl)methylamine‐palladium dichloride complex, prepared by sol‐gel cogelification, are efficient recyclable catalysts for Suzuki (aryl bromides and chlorides), Heck bromides) Sonogashira reactions iodides bromides). Formation of palladium(0) nanoparticles is observed in but not coupling.
Two monotrialkoxysilylated compounds that consist of complementary fragments melamine (M) and cyanuric acid (CA) have been synthesised. The molecular recognition properties the M CA through hydrogen bonds (DAD ADA; D=donor, A=acceptor) are key factor used to direct formation hybrid silica materials by using a sol-gel process. These were synthesised following two methods: First, an organo-bridged silsesquioxane was obtained hydrolysis derivatives, with fluoride ions as catalyst....
Abstract Two silylated Pd–NHC complexes were immobilized on hybrid silicas by sol‐gel cocondensation with tetraethyl orthosilicate (TEOS) and performed well as recyclable catalysts towards the Heck, Suzuki, Sonogashira coupling reactions. Remarkable conversion recyclability achieved in Suzuki reaction a challenging aryl chloride. No side products no undesired homocoupling observed or Heck reactions, which facilitates final purification step for cross‐coupling products. High turnover numbers...
Asymmetric organocatalytic materials based on a prolinamide scaffold have been synthesized according to different synthetic routes from monosilylated precursor: simple or surfactant-assisted co-condensation and grafting preformed mesostructured silica. The catalytic properties of these compared for direct asymmetric aldol reactions. best material results without structure-directing agent. Simple green conditions are used the reaction, process being performed in water at room temperature,...
A two-photon photosensitizer with four triethoxysilyl groups is synthesized through the click reaction. This allows design of bridged silsesquioxane (BS) nanoparticles a sol-gel process; moreover, gold core BS shells or decorated nanospheres are synthesized. An enhancement properties noted and efficient for imaging photodynamic therapy cancer cells.
Imidazolium salts are applied in different fields of research and have found a wide variety applications owing to their distinctive properties. This review exclusively focuses on the various methods (grafting, surfactant-assisted sol–gel synthesis, bridged silsesquioxanes formation) described recent years for covalent immobilization imidazolium silica supports via C–Si bonds catalytic resulting silica-supported NHC complexes. C–C bond formation reactions such as cross-coupling, olefin...
Biodegradable bridged silsesquioxane nanoparticles for two-photon imaging and therapy of cancer cells are described.
The synthesis of porphyrin-functionalized ethylene-based mesoporous organosilica nanoparticles was performed.