Single-Step Exfoliation and Covalent Functionalization of MoS2 Nanosheets by an Organosulfur Reaction

Ricardo H Gonçalves; Rodrigo Fiel; Mario R S Soares; Wido H Schreiner; Caio M P Silva; Edson R Leite

doi:10.1002/chem.201502303

Single-Step Exfoliation and Covalent Functionalization of MoS2 Nanosheets by an Organosulfur Reaction

Chemistry. 2015 Oct 26;21(44):15583-8. doi: 10.1002/chem.201502303. Epub 2015 Sep 14.

Authors

Ricardo H Gonçalves¹, Rodrigo Fiel², Mario R S Soares², Wido H Schreiner³, Caio M P Silva², Edson R Leite⁴

Affiliations

¹ Department of Chemistry, Federal University of Sao Carlos, Sao Carlos, SP, Brazil. ricardohg.ufscar@gmail.com.
² Department of Chemistry, Federal University of Sao Carlos, Sao Carlos, SP, Brazil.
³ Department of Physics, Federal University of Paraná, Curitiba PR, Brazil.
⁴ Department of Chemistry, Federal University of Sao Carlos, Sao Carlos, SP, Brazil. edson.leite@pq.cnpq.br.

PMID: 26367390
DOI: 10.1002/chem.201502303

Abstract

A simple approach to exfoliate and functionalize MoS2 in a single-step is described, which combines the dispersion of MoS2 in polybutadiene solution and ultrasonication processes. The great advantage of this process is that a colloidal stability of MoS2 in nonpolar solvent is achieved by chemically bonding polybutadiene on the perimeter edge sites of MoS2 sheets. In addition, elastomeric nanocomposite has been prepared with singular mechanical properties using functionalized MoS2 as nanofiller in a polybutadiene matrix with a subsequent vulcanization reaction.

Keywords: MoS2 nanosheets; covalent functionalization; exfoliation; nanocomposites; organosulfur.