Luminescent Graphene‐Based Materials via Europium Complexation on Dipyridylpyridazine‐Functionalized Graphene Sheets. Issue 27 (26th April 2019)

• Record Type: Journal Article
• Authors: Amaro‐Gahete, Juan; Kaczmarek, Anna M.; Esquivel, Dolores; Jiménez‐Sanchidrián, César; Van Der Voort, Pascal; Romero‐Salguero, Francisco J.
• Is Part Of: Chemistry. Volume 25:Issue 27(2019)
• Page Start: 6823
• Page End: 6830
• Publication Date: 2019-04-26
• Subjects: cycloaddition -- graphene -- lanthanides -- luminescence -- N ligands; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201900512
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: 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 sp 2 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. Abstract : Lighting graphene : Emitting graphene‐based materials were obtained by complexation of europium compounds on dipyridylpyridazine moieties attached to their sheets by Diels–Alder reactions.