2D host–guest supramolecular chemistry for an on-monolayer graphene emitting platform. Issue 10 (27th August 2020)

• Record Type: Journal Article
• Authors: Kim, Byeonggwan; Cho, Cheolhyun; Arfaoui, Imad; Paris, Céline; Petit, Christophe; Le Bahers, Tangui; Kim, Eunkyoung; Attias, André-Jean
• Is Part Of: Materials horizons. Volume 7:Issue 10(2020)
• Page Start: 2741
• Page End: 2748
• Publication Date: 2020-08-27
• Subjects: Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0mh00950d
• Languages: English
• ISSNs: 2051-6347

Abstract

Abstract : Electronic decoupling of molecular emitters from monolayer graphene allows luminescence of the hybrid platform, opening new perspectives for 2D materials-based nanophotonics. Abstract : Here is reported a novel strategy of non-covalent functionalization of graphene to avoid the electronic coupling between this semi-metal and directly adsorbed optically active molecules. Graphene-confined supramolecular host–guest recognition is used to elaborate an emitting hybrid platform. It is shown that the cavities of an on-monolayer graphene nanoporous self-assembled network are able to trap zinc phthalocyanine molecules coordinated to an emitting axial ligand. As a result, the emission of the hybrid system exhibits the same features as the isolated molecular emitter, demonstrating that the fluorescence is not quenched by graphene and that the well-controlled inter-chromophore distance prevents any interaction between the dyes. Furthermore, an in-depth modelling study confirms the weak interaction between the out of plane emitting moieties and the monolayer graphene. This work opens a new avenue for the realization of innovative light-responsive graphene-based devices in nanophotonics and optoelectronics.