Interfacial complexation driven three-dimensional assembly of cationic phosphorus dendrimers and graphene oxide sheets

Nadia Katir (1) , Anass Benayad (2) , Denis Rouchon (3) , Nathalie Marcotte (4) , Nabil El brahmi (1) , Jean Pierre Majoral (5) , Mosto Bousmina (1) , Abdelkrim El Kadib (1)

1 UEMF - Université Euro Méditerranéenne de Fès
2 LITEN - Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux
3 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
4 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
5 LCC - Laboratoire de chimie de coordination

High content nitrogen, sulfur and phosphorus heteroatoms assembled in tree-like dendrimers (DGn) are confined within the galleries of two-dimensional graphene oxide (GO). The presence of the ternary diethyl-N-ethyl-ammonium groups on the dendrimer peripheries ensures the exfoliation of graphene sheets thereby affording interfacially bridged, three-dimensional heteroatom-enriched graphene-based hybrid nanostructures (DGn-GO). Dendrimer generation (from 1 to 4) that reflects the bulkiness of these conceived nano-trees impacts increasingly the degree of dispersion-exfoliation and sheet desordering. The long-term stability of these aqueous suspensions associated with their handling flexibility allows uniform accommodation of the resulting hybrid materials as flame-retardants in bioplastics.

Domaines: Polymères; Matériaux

Nadia Katir, Anass Benayad, Denis Rouchon, Nathalie Marcotte, Nabil El brahmi, et al.. Interfacial complexation driven three-dimensional assembly of cationic phosphorus dendrimers and graphene oxide sheets. Nanoscale Advances, 2019, 1 (1), pp.314-321. ⟨10.1039/C8NA00047F⟩. ⟨hal-02341361⟩