Perylene-based non-covalent functionalization of 2D materials

Abstract

The surfactant assisted exfoliation and non-covalent functionalization of twodimensional layered materials, like graphene, transition metal dichalcogenides, etc., has extraordinarily been propelled forward within the last 5 years. Numerous molecules have been designed and attached to the exfoliated layers, and based on their outstanding properties, perylene based dyes have become one of the most frequently used π-detergents. Therefore, the prospect of this micro review is to summarize the most prominent achievements in this rapidly progressing field of research. IntroductionGraphene, [1] the prototype of novel 2D materials, has become a highly promising icandidate for future carbon-based devices. [2] Nowadays, the most important chemical routes towards its production are the liquid-phase exfoliation of graphite, [3][4] the reduction of graphene oxide, [5][6] and its bottom-up synthesis, starting from small precursor molecules. [7] Besides its production, also its functionalization has attracted a lot of interest in the scientific community due to its unprecedented physical properties and the wide range of possible applications where this carbon nano-material and its derivatives can be implemented. With this objective, the covalent functionalization of graphene has been investigated in detail [8] and also the non-covalent modification of graphene and other 2D materials has extraordinarily been propelled forward within the last 5 years.

Noncovalent Functionalization and Charge Transfer in Antimonene

“…[25,26] Despite synthetic efforts,t he chemistry and therefore the molecular doping of antimonene remains completely unexplored. In relation to that, we have recently reported on the noncovalent functionalization of BP with electron-poor and polarizable polycyclic aromatic molecules, thus observing ar emarkable charge-transfer behavior, and improving the resistance of the flakes against oxygen degradation.[ 27,28] In this context, the present work nicely illustrates,for the first time,the noncovalent functionalization of antimonene with ap erylene bisimide (PDI;F igure 1a), thereby showing amore pronounced charge-transfer behavior …”

“…[ 27,28] In this context, the present work nicely illustrates,for the first time,the noncovalent functionalization of antimonene with ap erylene bisimide (PDI;F igure 1a), thereby showing amore pronounced charge-transfer behavior …”

“…In relation to that, we have recently reported on the noncovalent functionalization of BP with electron-poor and polarizable polycyclic aromatic molecules, thus observing ar emarkable charge-transfer behavior, and improving the resistance of the flakes against oxygen degradation. [27,28] In this context, the present work nicely illustrates,for the first time,the noncovalent functionalization of antimonene with ap erylene bisimide (PDI;F igure 1a), thereby showing amore pronounced charge-transfer behavior than BP.M oreover,w eh ave performed scanning X-ray photoelectron microscopy experiments combined with DFT calculations to shed light on the charge-transfer process.…”

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

“…These observations can significantly improve the scope and possible application of black phosphorus as well as other pnictogens since its stability towards oxidation exhibit one of the most important issue. The non‐covalent functionalization of various 2D materials by large aromatic molecules based on perylene was recently summarized; however, the field of pnictogens remains almost completely unexplored with the exception of BP . An interesting donor–acceptor pair was created by Chen et al.…”

Enhancing the Corrosion Resistance of Epoxy Coatings by Impregnation with a Reduced Graphene Oxide‐Hydrophobic Ionic Liquid Composite

“…For example, pyrene derivative was promising in improving the dispersion of graphene. This stabilizer provided strong π‐π overlap with the graphene surface and can achieve good compatibility between GO and the polymer matrix . Some studies were also revealed that carbon nanotubes were successfully exfoliated in ionic liquids, especially, imidazolium‐based ionic liquids were used as alternative polar solvents for carbon materials exfoliation .…”