Properties and applications of chemically functionalized graphene

Craciun, Monica F.; Khrapach, Ivan; Barnes, Matthew D.; Russo, Saverio

doi:10.1088/0953-8984/25/42/423201

Cited by 102 publications

(86 citation statements)

References 230 publications

(411 reference statements)

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“…Graphene's disordered analogue, graphene oxide (GO), has originally been regarded as a precursor for cost-effective graphene production on a large scale but has become particularly attractive for practical applications based on its intrinsic heterogeneous chemical and electronic structure [1][2][3]. As a result of the chemical oxidation and exfoliation of graphite, the as-synthesised GO is an inhomogeneous system consisting of hydroxyl and epoxies functional groups covalently attached to the basal plane of graphene, and carboxylic groups at the edges [1,2,12,13].…”

Section: Introductionmentioning

confidence: 99%

Electrostatic transparency of graphene oxide sheets

Giusca

Perrozzi

Melios

et al. 2015

Carbon

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Section: Introductionmentioning

confidence: 99%

Electrostatic transparency of graphene oxide sheets

Giusca

Perrozzi

Melios

et al. 2015

Carbon

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“…1,2 Among the multiple developed approaches, incorporation of impurities in graphene is shown to be an efficient and versatile method for controllable tuning of its physical and chemical properties. 3À7 For example, by substituting carbon atoms with nitrogen or boron, 8 it is possible to turn graphene into a semiconductor of n-or p-type, respectively.…”

mentioning

confidence: 99%

Epitaxial B-Graphene: Large-Scale Growth and Atomic Structure

et al. 2015

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Embedding foreign atoms or molecules in graphene has become the key approach in its functionalization and is intensively used for tuning its structural and electronic properties.Here, we present an efficient method based on chemical vapor deposition for large scale growth of boron-doped graphene (B-graphene) on Ni(111) and Co(0001) substrates using carborane molecules as the precursor. It is shown that up to 19 at. % of boron can be embedded in the graphene matrix and that a planar CÀB sp 2 network is formed. It is resistant to air exposure and widely retains the electronic structure of graphene on metals. The large-scale and local structure of this material has been explored depending on boron content and substrate. By resolving individual impurities with scanning tunneling microscopy we have demonstrated the possibility for preferential substitution of carbon with boron in one of the graphene sublattices (unbalanced sublattice doping) at low doping level on the Ni(111) substrate. At high boron content the honeycomb lattice of B-graphene is strongly distorted, and therefore, it demonstrates no unballanced sublattice doping.

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“…that can be obtained in a now wide range of systems, e.g., graphene [1][2][3], silicene [7], borophene [8], phosphorenes [5], transition metal dichalcogenides [4,9], just to name a few. Significant research interest has been devoted to functionalizing 2D systems, graphene in particular [10][11][12], to engineer these properties (e.g., electronic band gap [13], chemical reactivity [14]) for targeted applications in a variety of electronics and chemical delivery systems. Here we examine the effects of varying mass on vibrational and thermal transport properties of functionalized graphene systems.…”

Section: Introductionmentioning

confidence: 99%

Effects of functional group mass variance on vibrational properties and thermal transport in graphene

Lindsay

Kuang

2017

Phys. Rev. B

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Intrinsic thermal resistivity critically depends on features of phonon dispersions dictated by harmonic interatomic forces and masses. Here we present the effects of functional group mass variance on vibrational properties and thermal conductivity (κ) of functionalized graphene from first principles calculations. We use graphane, a buckled graphene backbone with covalently bonded Hydrogen atoms on both sides, as the base material and vary the mass of the Hydrogen atoms to simulate the effect of mass variance from other functional groups. We find nonmonotonic behavior of κ with increasing mass of the functional group and an unusual cross-over from acoustic-dominated to optic-dominated thermal transport behavior. We connect this crossover to changes in the phonon dispersion with varying mass which suppress acoustic phonon velocities, but also give unusually high velocity optic modes. Further, we show that out-of-plane acoustic vibrations contribute significantly more to thermal transport than in-plane acoustic modes despite breaking of a reflection symmetry based scattering selection rule responsible for their large contributions in graphene. This work demonstrates the potential for manipulation and engineering of thermal transport properties in two dimensional materials toward targeted applications.*co-first author (equal contributions to work)

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Properties and applications of chemically functionalized graphene

Cited by 102 publications

References 230 publications

Electrostatic transparency of graphene oxide sheets

Electrostatic transparency of graphene oxide sheets

Epitaxial B-Graphene: Large-Scale Growth and Atomic Structure

Effects of functional group mass variance on vibrational properties and thermal transport in graphene

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