Luminescent graphene patterns

摘要

A luminescent nanocomposite comprising functionalized graphene and a luminescent moiety, its fabrication, and uses are described. The luminescent moiety is anchored non-covalently to the functionalized graphene. Luminescence properties of the nanocomposite may be modulated by choosing appropriate luminescent moieties such as native lactoferrin, native lactoferrin protected gold clusters, and so forth. Mechanical properties of the nanocomposite may be modulated by adding a biopolymer such as Chitosan. The nanocomposite may be used as a luminescent ink for encoding information, or a luminescent film for tagging articles of manufacture such as electronic waste components.

主权项

1. A method of labeling an article of manufacture with a removable and rewritable label, the method comprising:
heating a luminescent nanocomposite composition comprising graphene oxide, reduced graphene oxide, or a combination thereof, and at least one luminescent moiety from about 20° C. to about 70° C., wherein the luminescent moiety non-covalently interacts with the graphene oxide or reduced graphene oxide; forming a film of the composition by drying the composition to form the film; and depositing the film on the article of manufacture as a first label.