Titre :

Cooperative Synthesis of Raspberry‐Like Covalent Organic Framework‐Polymer Particles with a Radial Single‐Crystal Grain Orientation

Auteur(s) :

Salaun, Pauline [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Fadel, Alexandre [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Pelaez Fernandez, Mario [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Mouloud, Bahae-Eddine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Volkringer, Christophe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Woisel, Patrice [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Le Fer, Gaëlle [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la revue :

Small

Pagination :

2303697

Éditeur :

Wiley-VCH Verlag

Date de publication :

2023-08-23

ISSN :

1613-6810

Mot(s)-clé(s) en anglais :

covalent organic frameworks
nanostructured particles
poly(N-isopropylacrylamide)
polymers
radial single-crystal grain orientation

Discipline(s) HAL :

Chimie
Chimie/Matériaux
Chimie/Polymères
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

Résumé en anglais : [en]

Despite many efforts devoted toward the design of covalent organic frameworks (COFs) at the framework level by selecting the building blocks, their organization in the nano to meso regimes is often neglected. Moreover, the ...
Lire la suite >Despite many efforts devoted toward the design of covalent organic frameworks (COFs) at the framework level by selecting the building blocks, their organization in the nano to meso regimes is often neglected. Moreover, the importance of processability for their applications has recently emerged and the synthesis of COF nanostructures without agglomeration is still a challenge. Herein, the first example of hybrid COF-polymer particles for which polymers are used to manipulate the 2D COF growth along a specific direction is reported. The study examines how the nature, chain-end functionality, and molar mass of the polymer influence the shaping of hybrid 2D boronate ester-linked COF-polymer particles. Catechol-poly(N-butyl acrylate) leads to the self-assembly of crystallites into quasi-spherical structures while catechol-poly(N-isopropylacrylamide) mediates the synthesis of raspberry-like COF-polymer particles with radial grain orientation. Scanning and transmission electron microscopies (SEM and TEM) and 4D-STEM-ACOM (automated crystal orientation mapping) highlight the single-crystal character of these domains with one plane family throughout the particles. Interestingly, the presence of PNIPAm on the particle surface allows their drying without co-crystallization and enables their resuspension. Kinetic investigations show that catechol-PnBuA acts as a modulator and catechol-PNIPAm induces a template effect, introducing supramolecular self-assembly properties into particles to create new morphologies with higher structural complexity, beyond the framework level.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

"Covalent Organic Frameworks-POlymères” COlloïdaux : du design macromoléculaire aux auto-assemblages stimuli-répondants

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères
Matériaux Terrestres et Planétaires

Date de dépôt :

2023-09-04T14:15:38Z
2023-09-08T08:00:20Z
2023-09-09T03:23:42Z
2023-12-02T08:14:49Z
2023-12-09T02:01:37Z
2024-02-29T16:19:48Z