Biomimetic colloidal photonic crystals by coassembly of polystyrene nanoparticles and graphene quantum dots.

ABSTRACT: Biomimetic nanostructured materials with iridescent structural colors have attracted great attention due to their potential in photonic devices, materials science, and biomedical engineering. The technological applications of artificial photonic crystals (PCs), however, are often hindered by their low color visibility. Herein, we report colloidal PCs with enhanced color visibility through the coassembly of thioglycerol-modified graphene quantum dots (GQDs) into the close-packed array of polystyrene (PS) nanospheres. The enhanced polystyrene PCs were fabricated by both centrifugal sedimentation and drop-casting methods. The color visibility of the resulting PCs was found to be strongly dependent on the hydrothermal time (i.e., carbonization) and the doping concentrations of GQDs. The

SUBMITTER: Huang D 

PROVIDER: S-EPMC9087019 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature