Preparation and performance of a novel graphene oxide sheets modified rare-earth luminescence material

Abstract

We report the preparation and performance of a novel luminescent material by p-p stacking, as well as hydrogen bond interactions, to deposit Eu 3+ complexes on the surface of graphene oxide sheets (GOSs).Fourier transform infrared spectroscopy, fluorescence spectroscopy, X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis were introduced to investigate its structure and properties. The as-prepared Eu 3+ -pyromellitic acid-1,10-phenanthroline/GOSs distinctly exhibits a long decay lifetime of 1.82 ms, strong luminescence intensity, and good thermal and photo stability. Moreover, the effect of the mass of GOSs on the performance of the material was also studied.

Role of C–N Configurations in the Photoluminescence of Graphene Quantum Dots Synthesized by a Hydrothermal Route

“…As emerging carbon nanomaterials, graphene quantum dots (GQDs) have received enormous attention because of their unique chemical, electronic, and optical properties 1 2 3 . Various approaches developed to prepare GQDs include acidic oxidation, hydrothermal synthesis, microwave synthesis, electrochemical synthesis, oxygen plasma etching, catalysed cage-opening, pyrolysis, and exfoliation methods 4 5 6 7 8 9 . Moreover, numerous works concerning the mechanism of GQD formation via various simple synthesis methods have been reported 1 10 11 .…”

The influence of the structure of pyromellitic acid on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials

“…At present, some graphene oxide/rare-earth complex hybrid luminescent materials have been synthesized via π-π stacking of GOSs and Phen. The rst ligands of these materials are dibenzoylmethane, [13] 2thenoyltri uoroacetone, [16,18] acetylacetone, [14] 1-(2-Naphthoyl)-3,3,3-tri uoroacetone and PMA, [15,17] respectively. Although the existence of GOSs improves the luminescent properties of these materials, it also causes different degrees of uorescence quenching of the obtained hybrid luminescent materials (except PMA).…”

Synthesis of graphene oxide/rare-earth complex hybrid luminescent materials via π-π stacking and their pH-dependent luminescence

“…However, the luminescence of graphene oxide must be enhanced for it to be used as an imaging agent. Graphene-based luminescent materials have been proposed using fluorescein [11], quantum dots [12] and rare earth elements [13].…”

“…Fan et al [27] successfully loaded luminescent Sm 3þ complexes on graphene oxide via covalent bonds resulting in a material with high loading but relatively weak thermal stability. The Zhang research group [28] selected pyromellitic acid (PMA) and 1,10-Phenanthroline (Phen) as ligands to prepare modified graphene oxide with Eu 3þ complexes. These materials exhibited better thermal stability than RE complexes.…”