Atomically resolved imaging of highly ordered alternating fluorinated graphene

Reza J Kashtiban; M Adam Dyson; Rahul Raveendran Nair; Recep Zan; Swee L Wong; Quentin Ramasse; Andre K Geim; Ursel Bangert; Jeremy Sloan

doi:10.1038/ncomms5902

Atomically resolved imaging of highly ordered alternating fluorinated graphene

Reza J Kashtiban, M Adam Dyson, Rahul Raveendran Nair, Recep Zan, Swee L Wong, Quentin Ramasse, Andre K Geim, Ursel Bangert, Jeremy Sloan

Research output: Contribution to journal › Article › peer-review

Abstract

One of the most desirable goals of graphene research is to produce ordered two-dimensional (2D) chemical derivatives of suitable quality for monolayer device fabrication. Here we reveal, by focal series exit wave reconstruction (EWR), that C2F chair is a stable graphene derivative and demonstrates pristine long-range order limited only by the size of a functionalized domain. Focal series of images of graphene and C2F chair formed by reaction with XeF2 were obtained at 80 kV in an aberration-corrected transmission electron microscope. EWR images reveal that single carbon atoms and carbon–fluorine pairs in C2F chair alternate strictly over domain sizes of at least 150nm2 with electron diffraction indicating ordered domains Z0.16 mm2. Our results also indicate that, within an ordered domain, functionalization occurs on one side only as theory predicts. In addition, we show that electron diffraction provides a quick and easy method for distinguishing between graphene, C2F chair and fully fluorinated stoichiometric CF 2D phases.

Original language	English
Article number	4902
Journal	Nature Communications
Volume	5
DOIs	https://doi.org/10.1038/ncomms5902
Publication status	Published - 12 Nov 2014

Access to Document

10.1038/ncomms5902

Cite this

@article{162b1230c755430792f58cbf0fbe0fe2,

title = "Atomically resolved imaging of highly ordered alternating fluorinated graphene",

abstract = "One of the most desirable goals of graphene research is to produce ordered two-dimensional (2D) chemical derivatives of suitable quality for monolayer device fabrication. Here we reveal, by focal series exit wave reconstruction (EWR), that C2F chair is a stable graphene derivative and demonstrates pristine long-range order limited only by the size of a functionalized domain. Focal series of images of graphene and C2F chair formed by reaction with XeF2 were obtained at 80 kV in an aberration-corrected transmission electron microscope. EWR images reveal that single carbon atoms and carbon–fluorine pairs in C2F chair alternate strictly over domain sizes of at least 150nm2 with electron diffraction indicating ordered domains Z0.16 mm2. Our results also indicate that, within an ordered domain, functionalization occurs on one side only as theory predicts. In addition, we show that electron diffraction provides a quick and easy method for distinguishing between graphene, C2F chair and fully fluorinated stoichiometric CF 2D phases.",

author = "Kashtiban, {Reza J} and Dyson, {M Adam} and {Raveendran Nair}, Rahul and Recep Zan and Wong, {Swee L} and Quentin Ramasse and Geim, {Andre K} and Ursel Bangert and Jeremy Sloan",

year = "2014",

month = nov,

day = "12",

doi = "10.1038/ncomms5902",

language = "English",

volume = "5",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Springer Nature",

}

TY - JOUR

T1 - Atomically resolved imaging of highly ordered alternating fluorinated graphene

AU - Kashtiban, Reza J

AU - Dyson, M Adam

AU - Raveendran Nair, Rahul

AU - Zan, Recep

AU - Wong, Swee L

AU - Ramasse, Quentin

AU - Geim, Andre K

AU - Bangert, Ursel

AU - Sloan, Jeremy

PY - 2014/11/12

Y1 - 2014/11/12

N2 - One of the most desirable goals of graphene research is to produce ordered two-dimensional (2D) chemical derivatives of suitable quality for monolayer device fabrication. Here we reveal, by focal series exit wave reconstruction (EWR), that C2F chair is a stable graphene derivative and demonstrates pristine long-range order limited only by the size of a functionalized domain. Focal series of images of graphene and C2F chair formed by reaction with XeF2 were obtained at 80 kV in an aberration-corrected transmission electron microscope. EWR images reveal that single carbon atoms and carbon–fluorine pairs in C2F chair alternate strictly over domain sizes of at least 150nm2 with electron diffraction indicating ordered domains Z0.16 mm2. Our results also indicate that, within an ordered domain, functionalization occurs on one side only as theory predicts. In addition, we show that electron diffraction provides a quick and easy method for distinguishing between graphene, C2F chair and fully fluorinated stoichiometric CF 2D phases.

AB - One of the most desirable goals of graphene research is to produce ordered two-dimensional (2D) chemical derivatives of suitable quality for monolayer device fabrication. Here we reveal, by focal series exit wave reconstruction (EWR), that C2F chair is a stable graphene derivative and demonstrates pristine long-range order limited only by the size of a functionalized domain. Focal series of images of graphene and C2F chair formed by reaction with XeF2 were obtained at 80 kV in an aberration-corrected transmission electron microscope. EWR images reveal that single carbon atoms and carbon–fluorine pairs in C2F chair alternate strictly over domain sizes of at least 150nm2 with electron diffraction indicating ordered domains Z0.16 mm2. Our results also indicate that, within an ordered domain, functionalization occurs on one side only as theory predicts. In addition, we show that electron diffraction provides a quick and easy method for distinguishing between graphene, C2F chair and fully fluorinated stoichiometric CF 2D phases.

U2 - 10.1038/ncomms5902

DO - 10.1038/ncomms5902

M3 - Article

SN - 2041-1723

VL - 5

JO - Nature Communications

JF - Nature Communications

M1 - 4902

ER -

Atomically resolved imaging of highly ordered alternating fluorinated graphene

Abstract

Access to Document

Fingerprint

Cite this