Preparation and Physical Properties of Red-photoluminescent Graphene/Europium(III)/Picolinate

摘要

Novel photoluminescent graphene, graphene/europium/picolinate, was made from the reaction of the graphene carboxy-late, europium(III) and α-pyridoin anion in methanol solution. There was evidence on IR spectroscopic data that europium metal was coordinated by graphene carboxylate. The graphene/europium/picolinate materials emitted the red luminescence with main peaks at 609 and 695 nm, when solid sample was excited by an UV light at the wavelength of 254 nm. The surface morphology and physical properties of the graphene/europium/picolinate product have been investigated by IR, PL, SEM, TEM and TGA measurements.