Star-like Supramolecular Complexes of Reducing-End-Functionalized Cellulose Nanocrystals - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue ACS Omega Année : 2018

Star-like Supramolecular Complexes of Reducing-End-Functionalized Cellulose Nanocrystals

Résumé

In this work, we take advantage of the parallel organization of cellulose chains in cellulose I yielding an inherent chemical asymmetry of cellulose nanocrystals, i.e., reducing vs nonreducing end, to selectively modify only one end of these rigid rodlike crystals to be used as a linking point for the formation of supramolecular structures. We have prepared biotin-functionalized tunicate cellulose nanocrystals at the reducing end capable of forming new complex supramolecular hierarchies by the addition of the protein streptavidin. Biotin-streptavidin coupling was chosen because streptavidin has a multivalency of four and the biotin-streptavidin bond is known to be highly selective and stable. Hence, streptavidin molecules would link up to four cellulose nanocrystals through their biotin-modified reducing end. Two biotin derivatives were studied, consisting of an anchoring group, i.e., amine or hydrazine; the biotin moiety; and the linker between them. Results show that the length of the linker significantly affects the bond between the biotinylated cellulose nanocrystals and streptavidin, and a certain chain length is necessary for the supramolecular assembly of several cellulose nanocrystals by streptavidin.
Fichier principal
Vignette du fichier
2018_Villares_ACS Omega_1.pdf (4.81 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02626393 , version 1 (26-05-2020)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Ana Villares Garicochea, Céline Moreau, Bernard Cathala. Star-like Supramolecular Complexes of Reducing-End-Functionalized Cellulose Nanocrystals. ACS Omega, 2018, 3 (11), pp.16203-16211. ⟨10.1021/acsomega.8b02559⟩. ⟨hal-02626393⟩

Collections

INRA INRAE ANR
31 Consultations
45 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More