Luminescent graphene-based materials via europium complexation on dipyridylpyridazine-functionalized graphene sheets
Autor
Amaro-Gahete, J.
Kaczmarek, Anna M.
Esquivel, Dolores
Jiménez-Sanchidrián, César
Van der Voort, Pascal
Romero-Salguero, F.J.
Editor
WileyFecha
2019Materia
Graphen noanosheetsEuropium
Dipyridylpyridazine
Diels-Alder
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Graphene-based materials exhibit outstanding physical
properties and so are potentially applicable in a great variety of fields.
Unlike their corresponding oxides, graphite and graphene are not
prone to functionalization. Diels-Alder reactions are among the
scarce reactions that they can undergo without disrupting their
conjugated sp2 systems. Herein, the reaction between graphite and
3,6-di(2-pyridyl)-1,2,4,5-tetrazine under different conditions affords
several graphene-based materials consisting of dipyridylpyridazine
functionalized few layer graphene, multilayer graphene and graphite
whose sheets act as ligands for the grafting of a europium complex.
These three materials show strong red emission under 365 nm UV
radiation. Their emitting particles can be visualized by confocal
microscopy. The rich coordination chemistry of dipyridylpyridazine
ligands envisages novel properties for similarly functionalized
graphene-based materials grafted with other metal complexes.