Coating graphene oxide sheets with luminescent rare-earth complexes

Coordination chemistry on carbon surfaces

“…Another reported strategy consists in the prior anchoring of a functionalized pyrene molecule, acting as a bridging unit, interacting with SWCNTs through the pyrene ring and strongly coordinating to the zinc center of the metallomacrocyle via a nitrogen atom of the functional group [163]. Apart from pyrene, that appears as a polyaromatic fragment of choice for the development of -interactions; other aromatic moieties like naphthalene [169,170,173], 1,10-phenanthroline [201][202][203] or even cyclopentadienyl (Cp) rings [204][205][206] have been successfully used for non-covalent immobilization of transition metal complexes onto graphitic surfaces and are presented in Table 12. Theoretical calculations using the surface integrated molecular orbital/molecular mechanics method were applied to the SWCNT/zirconocene system.…”

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

“…5(c). Also we can see diffraction peaks at 2q ¼ 9.30 and 21.45 , which belong to the reflection of Phen and the diffraction peak at 2q ¼ 27.60 , which is related to the reflection of EuCl 3 [26]. It means there are unreacted Phen and EuCl 3 during the formation of Eu(Tta) 3 Phen complexes.…”

“…Cao and co-workers [25] reported novel graphene oxide sheets modified with RE complexes [Eu(DBM) 2 (Phen)(SA)] by p-p stacking, which can emit red fluorescence and disperse into a single-layer in some solvents. Wang et al [26] also prepared similar materials by coating graphene oxide with luminescent RE complexes, the final product shows a longer decay lifetime than RE complexes. 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.…”

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

“…[12][13][14][15][16] GSs with luminescence emission produced by a laser ash was observed by P. Kumar, K. S. Subrahmanyam, and others. 24 In this work, pyromellitic acid (PMA) as the rst ligand, 1,10phenanthroline (phen) as the second ligand, and GOSs as the inorganic substrate were selected to prepare a novel GOS modied Eu 3+ complex hybrid material. 21,22 The oxides, graphene oxide sheets (GOSs), contain a large number of hydrophilic oxygen-containing functional groups such as carboxyl, epoxy, and hydroxyl, 13,14 which make it disperse in a variety of solvents.…”