In Situ Enzyme Immobilization by Covalent Organic Frameworks

International audienceEnzyme immobilization is a widely reported method to favor the applicability of enzymes by enhancing their stability and re-usability. Among the various existing solid supports and immobilization strategies, the in situ encapsulation of enzymes within crystalline porous matrices is a powerful tool to design biohybrids with a stable and protected catalytic activity. However, to date, only a few metal–organic frameworks (MOFs) and hydrogen-bonded organic frameworks (HOFs) have been reported. Excitingly, for the first time, Y. Chen and co-workers expanded the in situ bio-encapsulation to a new class of crystalline porous materials, namely covalent organic frameworks (COFs). The enzyme@COF materials not only exhibited high enzyme loading with minimal leaching, high catalytic activity and selectivity, chemical and long-term stability and recyclability but could also be scaled up to a few grams. Undoubtedly, this work opens new striking opportunities for enzymatic immobilization and will stimulate new research on COF-based matrices

Encapsulation de micro-algues dans des matrices minérales en vue d'élaboration bio-contrôlée de nanoparticules

PARIS7-Bibliothèque centrale (751132105) / SudocSudocFranceF

Des trous dans l’architecture des matériaux

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Synthesis and surface modification of metal organic frameworks nanoparticles for the processing of mixed matrix membranes

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Design of porous biocomposites by assembling MOFs with biomacromolecules for environmental-related applications

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Encapsulation of Microperoxidase‐8 into MIL‐101(Cr/Fe) Nanoparticles: A New Biocatalyst for the Epoxidation of Styrene

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Enhancing microperoxidase activity and selectivity: immobilization in metal-organic frameworks

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Metal–Organic Framework Based 1D Nanostructures and Their Superstructures: Synthesis, Microstructure, and Properties

International audienceOwing to their high and tunable porosity as well as great chemical diversity, metal–organic frameworks (MOFs) have shown great promise over the past 20 years for a wide range of applications, including gas storage/separation, catalysis, and biomedicine. To date, MOF nanoparticles (NPs) have mostly been obtained as polycrystalline powders or spherical nanocrystals while anisotropic MOFs nanocrystals have been less explored and are of interest in the fields of catalysis, sensing, and electronics. One of the main challenges for the practical application of MOFs is thus to control the crystal size, morphology, and multiscale porosity of these materials while developing adequate shaping strategies. In this review, we cover recent advances in the different synthetic strategies of one-dimensional (1D) MOF nanocrystals as well as hierarchical porous superstructures based on tubular MOFs. We describe the architectures based on MOFs nanotubes (NTs), nanowires (NWs), and nanorods (NRs). Our discussion is focused on the synthetic approaches that drive the structure, crystallinity, size, and morphology of these hierarchical porous hybrid materials. Finally, their potential for different applications is presented

Design of MOF/Gelatin Hydrogel Composites Mediated by Coacervation Process for the Capture of Volatile Organic Compounds

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Bacteria encapsulation in a magnetic sol-gel matrix

The encapsulation of Escherichia coli bacteria within ferrihydrite gels favours the long-term viability of the entrapped cells while preserving the magnetic properties of the host material.Fil: Amoura, Makhlouf. Universite de Paris VI; FranciaFil: Brayner, Roberta. Université Paris Diderot - Paris 7; FranciaFil: Perullini, Ana Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Sicard, Clémence. Universite de Paris VI; Francia. Université Paris Diderot - Paris 7; FranciaFil: Roux, Cécile. Universite de Paris VI; FranciaFil: Livage, Jacques. Universite de Paris VI; FranciaFil: Coradin, Thibaud. Universite de Paris VI; Franci