Physical properties and device applications of graphene oxide

Abstract

Graphene oxide (GO), the functionalized graphene with oxygenated groups (mainly epoxy and hydroxyl), has attracted resurgent interests in the past decade owing to its large surface area, superior physical and chemical properties, and easy composition with other materials via surface functional groups. Usually, GO is used as an important raw material for mass production of graphene via reduction. However, under different conditions, the coverage, types, and arrangements of oxygencontaining groups in GO can be varied, which give rise to excellent and controllable physical properties, such as tunable electronic and mechanical properties depending closely on oxidation degree, suppressed thermal conductivity, optical transparency and fluorescence, and nonlinear optical properties. Based on these outstanding properties, many electronic, optical, optoelectronic, and thermoelectric devices with high performance can be achieved on the basis of GO. Here we present a comprehensive review on recent progress of GO, focusing on the atomic structures, fundamental physical properties, and related device applications, including transparent and flexible conductors, field-effect transistors, electrical and optical sensors, fluorescence quenchers, optical limiters and absorbers, surface enhanced Raman scattering detectors, solar cells, light-emitting diodes, and thermal rectifiers.

3D Graphene Scaffolds for Skeletal Muscle Regeneration: Future Perspectives

“…Its derivative, the graphene oxide (GO) has oxygen functional groups decorating carbon plane and has largely been exploited in medicine due to its water dispersibility. Indeed pristine graphene is highly hydrophobic and tends to precipitate in biological media (Huang et al, 2020). GO has been functionalized with polymers and biomolecules and is also the precursor of rGO, the reduced form obtained by different chemical, hydrothermal, electrochemical procedures and similar to pristine graphene, but with defects and holes on the carbon skeleton (Dreyer et al, 2014;Palmieri et al, 2019a,b).…”

Plasma Assisted Reduction of Graphene Oxide Films

“…The opportunity for tailoring the optoelectronic properties of GO arises from the ability to manipulate its shape, size, and the fraction of sp 2 /sp 3 hybridized carbon domains by controlled reduction [ 35 , 106 ]. Finally, GO and r-GO serve as a tunable platform for several applications.…”

Perspectives in the design and application of composites based on graphene derivatives and bio‐based polymers

“…rGO has been widely used for the fabrication of rGO-based FETs. 154 These FETs are applied to detect electrolytes, proteins and DNA hybridization, since their carrier transport property is sensitive to the electrostatic environment. [68][69][70][71][72] Two mechanisms are used to elucidate the efficiency of 2DMs/polymer-based FETs: one is the charge transfer between adsorbed charged species and 2DMs and the other is the electrostatic gating effect.…”

“…rGO has been widely used for the fabrication of rGO‐based FETs 154 . These FETs are applied to detect electrolytes, proteins and DNA hybridization, since their carrier transport property is sensitive to the electrostatic environment 68–72 .…”