Colorful Polymer Compositions with Dyed Graphene Oxide Nanosheets

Abstract

A water suspension of graphene oxide nanosheets (GONSs) obtained via exfoliation of a graphite oxide was treated with a solution of rhodamine 6G. It was found that adding the dye results in the destruction of the GONS water suspension and the precipitation of dyed graphene oxide. The precipitate, washed out of the excess dye and subjected to a second dispersal via sonification, provides a stable suspension of dyed GONS in water or dimethylformamide. The GONS dyeing produces shifts of major absorption bands of the dye in solutions or in polymer compositions toward larger wavelengths. We also found that the stability of a dye subjected to ultraviolet irradiation increases if the dye is bound to a GONS. The increased stability resulted from excitation transfer from dye to a GO nanosheet and its subsequent reduction.

A Novel Method for Applying Reduced Graphene Oxide Directly to Electronic Textiles from Yarns to Fabrics

“…To achieve this requirement, we used hybrid RGO/GO yarns. By dyeing the GO nanosheets with rhodamine 6G (Rh6G, C 28 H 31 ClN 2 O 3 ), we successfully synthesised coloured, conducting yarn by twisting Rh6G‐treated GO/NY and RGO/NY (Figure S6, Supporting Information). Figure h shows the conducting, red‐coloured yarn.…”

Fabrication of Graphene Oxide Reinforced Bio‐Nanocomposite Films with Antibacterial Potential

“…[12,13] Further, it acts as a promising nanofiller to form polymer nanocomposite-based antibacterial agents. [14][15][16][17] Although GO exhibits antibacterial properties, sometimes its surface area gets limited due to aggregation phenomena which affect its mode of action. A suitable polymeric matrix can be employed to form nanocomposite material with strong interfacial adhesion between the phases to improve its physicochemical properties.…”

Nanocomposites based on biocompatible polymers and graphene oxide for antibacterial coatings

“…35 GO exhibits biocompatibility that makes it a promising nanofiller for some biocompatible polymers to form antibacterial coatings. [37][38][39] GO activates antibacterial effect and enhances the mechanical strength of the polymers. 40,41 In general, there are three strategies to fabricate biocompatible an antibacterial coatings based on biocompatible polymers and GO nanocomposites as shown in Figure 1.…”