Halogenated Graphenes: Rapidly Growing Family of Graphene Derivatives

Karlický, František; Datta, K. K. R.; Otyepka, Michal; Zbořil, Radek

doi:10.1021/nn4024027

Cited by 369 publications

(276 citation statements)

References 119 publications

Supporting

Mentioning

265

Contrasting

Unclassified

Order By: Relevance

“…The experimental challenge is thus shifted to the selective functionalization of the parent crystal. To achieve this result, it is likely to be that techniques adopted for the functionalization of graphene 39,40 could be generalized to heteroatomic honeycomb crystals. Indeed, full coverage, doublesided hydrogenation of graphene (that is, graphane) has been realized in suspended samples by exposure to low-temperature hydrogen plasmas 41 .…”

Section: Resultsmentioning

confidence: 99%

Engineering polar discontinuities in honeycomb lattices

2014

View full text Add to dashboard Cite

Unprecedented and fascinating phenomena have been recently observed at oxide interfaces between centrosymmetric cubic materials, where polar discontinuities can give rise to polarization charges and electric fields that drive a metal-insulator transition and the appearance of a two-dimensional electron gas. Lower-dimensional analogues are possible, and honeycomb lattices offer a fertile playground, thanks to their versatility and the extensive ongoing experimental efforts in graphene and related materials. Here we suggest different realistic pathways to engineer polar discontinuities in honeycomb lattices and support these suggestions with extensive first-principles calculations. Several approaches are discussed, based on (i) nanoribbons, where a polar discontinuity against the vacuum emerges, and (ii) functionalizations, where covalent ligands are used to engineer polar discontinuities by selective or total functionalization of the parent systems. All the cases considered have the potential to deliver innovative applications in ultra-thin and flexible solar-energy devices and in micro-and nano-electronics.

show abstract

Section: Resultsmentioning

confidence: 99%

Engineering polar discontinuities in honeycomb lattices

2014

View full text Add to dashboard Cite

show abstract

“…Hydrogenated graphene, fluorinated graphene (or halogenated graphene [120] in general), and GO (or rGO) are the few examples of materials that resulted from covalent modification of the graphene scaffold. Instead of providing an extensive list of the methods available to induce such modifications, we will continue with discussing a grafting strategy, frequently applied to covalently attach chemical moieties to graphene surface (or edges) via free-radical reactions.…”

Section: Covalent Functionalizationsmentioning

confidence: 99%

Sensing at the Surface of Graphene Field‐Effect Transistors

et al. 2016

View full text Add to dashboard Cite

Abstract. 10Recent research trends now offer new opportunities for developing the next generations of label-free biochemical sensors using graphene and other two-dimensional materials. While the physics of graphene transistors operated in electrolyte is well grounded, important chemical challenges still remain to be addressed, namely the impact of the chemical functionalizations of graphene on the key electrical parameters and the sensing performances. In fact, graphene -at least ideal graphene -is highly chemically inert. The 15 functionalizations and chemical alterations of the graphene surface -both covalently and non-covalently -are crucial steps that define the sensitivity of graphene. The presence, reactivity, adsorption of gas and ions, proteins, DNA, cells and tissues on graphene have been successfully monitored with graphene. This review aims to unify most of the work done so far on biochemical sensing at the surface of a (chemically functionalized) graphene field-effect transistor and the challenges that lie ahead. We are convinced that graphene biochemical sensors 20 hold great promises to meet the ever-increasing demand for sensitivity, especially looking at the recent progresses suggesting that the obstacle of Debye screening can be overcome.2

show abstract

“…[[qv: 4a]],12 Fluorographene (fully fluorinated graphene, CF) is defined by Rahul R. Nair[[qv: 4a]] as a carbon monofluoride of graphene with the F/C ratio of 1.0, which is also introduced or accepted by many groups 13…”

Section: Introductionmentioning

confidence: 99%

Two‐Dimensional Fluorinated Graphene: Synthesis, Structures, Properties and Applications

et al. 2016

View full text Add to dashboard Cite

Fluorinated graphene, an up‐rising member of the graphene family, combines a two‐dimensional layer‐structure, a wide bandgap, and high stability and attracts significant attention because of its unique nanostructure and carbon–fluorine bonds. Here, we give an extensive review of recent progress on synthetic methods and C–F bonding; additionally, we present the optical, electrical and electronic properties of fluorinated graphene and its electrochemical/biological applications. Fluorinated graphene exhibits various types of C–F bonds (covalent, semi‐ionic, and ionic bonds), tunable F/C ratios, and different configurations controlled by synthetic methods including direct fluorination and exfoliation methods. The relationship between the types/amounts of C–F bonds and specific properties, such as opened bandgap, high thermal and chemical stability, dispersibility, semiconducting/insulating nature, magnetic, self‐lubricating and mechanical properties and thermal conductivity, is discussed comprehensively. By optimizing the C–F bonding character and F/C ratios, fluorinated graphene can be utilized for energy conversion and storage devices, bioapplications, electrochemical sensors and amphiphobicity. Based on current progress, we propose potential problems of fluorinated graphene as well as the future challenge on the synthetic methods and C‐F bonding character. This review will provide guidance for controlling C–F bonds, developing fluorine‐related effects and promoting the application of fluorinated graphene.

show abstract

Halogenated Graphenes: Rapidly Growing Family of Graphene Derivatives

Cited by 369 publications

References 119 publications

Engineering polar discontinuities in honeycomb lattices

Engineering polar discontinuities in honeycomb lattices

Sensing at the Surface of Graphene Field‐Effect Transistors

Two‐Dimensional Fluorinated Graphene: Synthesis, Structures, Properties and Applications

Contact Info

Product

Resources

About