The Covalent Functionalization of Surface‐Supported Graphene: An Update

Abstract

In the last decade, the use of graphene supported on solid surfaces has broadened its scope and applications, and graphene has acquire a promising role as a major component of high-performance electronic devices. In this context, the chemical modification of graphene has become essential. In particular, covalent modification offers key benefits, including controllability, stability, and the facility to be integrated into manufacturing operations. In this Review, we critically comment on the latest advances in the covalent modification of supported graphene on substrates. We analyze the different chemical modifications with special attention to radical reactions. In this context, we review the latest achievements in reactivity control, tailoring electronic properties, and introducing active functionalities. Finally, we extended our analysis to other emerging 2D materials supported on surfaces, such as transition metal dichalcogenides, transition metal oxides, and elemental analogs of graphene.

Direct Magnetic Evidence, Functionalization, and Low-Temperature Magneto-Electron Transport in Liquid-Phase Exfoliated FePS3

“…and electronic features (i.e., improve absorption, modify band gap, etc. ). − Moreover these small molecules can be used as intermediate linkers to couple 2D magnetic materials to other 2D materials with complementary properties. LPE in i PrOH, without the addition of exfoliating agents, provides the additional advantage of a pristine flake surface to carry out further covalent functionalization with functional molecules or even the fabrication of heterostructures …”

Covalent functionalization of graphene sheets for plasmid DNA delivery: experimental and theoretical study

“…On the other hand, covalent functionalization provides higher water dispersibility and stability which involves the formation of covalent adducts with the sp 2 carbon structures in graphene. 16,17 One of the successful and effectively developed functionalization approaches is the electrophilic substitution of aryl diazonium salt on the surface of the graphene sheet which provides tremendous applications in various elds. [18][19][20][21] Herein, we used this method to covalently functionalize graphene sheets with adequate molecules of a hydrophilic linker (derived from tetraethylene glycol) to improve the water dispersibility of the graphene.…”

First-principles study of SiC and GeC monolayers with adsorbed non-metal atoms

“…Similarly, feature-rich electronic and magnetic properties suitable for spintronic applications are also induced in ReS 2 monolayer by N, P, F, and Cl as demonstrated by Zhang et al 52 Due to the formation of covalent bonds with the host 2D materials, H, O, N, and F atoms are usually chosen as adatoms for functionalization. [51][52][53][54] In this work, the effects of hydrogen (H), oxygen (O), nitrogen (N) and uorine (F) atoms on XC (X = Si and Ge) monolayers are investigated using rst-principles calculations. However, our calculations assert weak N adsorption as suggested by the positive adsorption energy.…”