Highly Water Dispersible Functionalized Graphene by Thermal Thiol-Ene Click Chemistry.

ABSTRACT: Functionalization of pristine graphene to achieve high water dispersibility remains as a key obstacle owing to the high hydrophobicity and absence of reactive functional groups on the graphene surface. Herein, a green and simple modification approach to prepare highly dispersible functionalized graphene via thermal thiol-ene click reaction was successfully demonstrated on pristine graphene. Specific chemical functionalities (-COO, -NH2 and -S) on the thiol precursor (L-cysteine ethyl ester) were clicked directly on the sp2 carbon of graphene framework with grafting density of 1 unit L-cysteine per 113 carbon atoms on graphene. This functionalized graphene was confirmed with high atomic content of S (4.79 at % S) as well as the presence of C-S-C and N-H species on the L-cysteine functionali

SUBMITTER: Farivar F 

PROVIDER: S-EPMC8198566 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature