Luminescent Graphene‐Based Materials via Europium Complexation on Dipyridylpyridazine‐Functionalized Graphene Sheets

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 occur witho...

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Bibliographic Details
Published in:Chemistry : a European journal 2019-05, Vol.25 (27), p.6823-6830
Main Authors: Amaro‐Gahete, Juan, Kaczmarek, Anna M., Esquivel, Dolores, Jiménez‐Sanchidrián, César, Van Der Voort, Pascal, Romero‐Salguero, Francisco J.
Format: Article
Language:English
Subjects:
Chemistry
Confocal microscopy
Coordination compounds
cycloaddition
Disruption
Europium
Graphene
Graphite
lanthanides
Ligands
luminescence
Metal complexes
Microscopy
Multilayers
N ligands
Organic chemistry
Oxides
Physical properties
Sheets
Ultraviolet radiation
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Summary: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 occur 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, the sheets of which 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 has potential novel properties for similarly functionalized graphene‐based materials grafted with other metal complexes. Lighting graphene: Emitting graphene‐based materials were obtained by complexation of europium compounds on dipyridylpyridazine moieties attached to their sheets by Diels–Alder reactions.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201900512