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797774

Sigma-Aldrich

Graphene nanoribbons

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About This Item

Linear Formula:
C
Molecular Weight:
12.01
EC Number:
231-153-3
UNSPSC Code:
12352103
NACRES:
NA.23

assay

≥90.0% carbon basis (TGA)

form

powder

L × W

2-15 μm × 40-250 nm

density

2.2745 g/mL (He gas method)

bulk density

0.0970 g/mL (Mercury Porosimetry)

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General description

Produced by unzipping multi-walled carbon nanotubes by potassium intercalation.

Application

  • Composites.
  • Conductive inks.
  • Electrodes for LiB.
  • Energy storage & harvesting applications.
  • Bio-medical applications.
  • Preferred dispersing organic solvents: pyrrolidones and chlorinated solvents.
  • Less preferred dispersing organic solvents: cyclohexanone and γ-butyrolactone.
  • Aqueous dispersions are possible at 0.1mg/mL with triton-X-100, sodium cholate and deoxycholate and cellulose-based surfactants.

Analysis Note

Raman Spectroscopic Data:
ID/IG = 0.65±0.07
I2D/IG = 0.74±0.03
2D FWHM = 63 cm-1

Legal Information

Graphene Nanoribbon Composites and Methods of Making the Same, WO/2012/112435 A1.

pictograms

Health hazard
GHS08

signalword

Danger

Hazard Classifications

Carc. 2 - Repr. 2 - STOT RE 1 Inhalation

target_organs

Lungs

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

nwg

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High Throughput Preparation of Large Area Transparent Electrodes Using Non-Functionalized Graphene Naroribbons.
Zhu Y, et al.
Chemistry of Materials, 23, 935-939 (2011)
Lei Li et al.
ACS applied materials & interfaces, 5(14), 6622-6627 (2013-06-25)
A facile and cost-effective approach to the fabrication of a nanocomposite material of polyaniline (PANI) and graphene nanoribbons (GNRs) has been developed. The morphology of the composite was characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron microscopy, and
Dmitry V Kosynkin et al.
ACS nano, 5(2), 968-974 (2011-01-06)
Here we demonstrate that graphene nanoribbons (GNRs) free of oxidized surfaces can be prepared in large batches and 100% yield by splitting multiwalled carbon nanotubes (MWCNTs) with potassium vapor. If desired, exfoliation is attainable in a subsequent step using chlorosulfonic
Changsheng Xiang et al.
ACS nano, 7(11), 10380-10386 (2013-10-10)
A thermoplastic polyurethane (TPU) composite film containing hexadecyl-functionalized low-defect graphene nanoribbons (HD-GNRs) was produced by solution casting. The HD-GNRs were well distributed within the polyurethane matrix, leading to phase separation of the TPU. Nitrogen gas effective diffusivity of TPU was
Lei Li et al.
Advanced materials (Deerfield Beach, Fla.), 25(43), 6298-6302 (2013-09-03)
A facile and cost-effective approach for the fabrication of a hierarchical nanocomposite material of graphene-wrapped MnO2 -graphene nanoribbons (GMG) is developed. The resulting composite has a high specific capacity and an excellent cycling stability owing to the synergistic combination of
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