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Merck

797774

Sigma-Aldrich

Graphene nanoribbons

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About This Item

Lineare Formel:
C
Molekulargewicht:
12.01
EG-Nummer:
UNSPSC-Code:
12352103
NACRES:
NA.23

Assay

≥90.0% carbon basis (TGA)

Form

powder

L × B

2-15 μm × 40-250 nm

Dichte

2.2745 g/mL (He gas method)

Schüttdichte

0.0970 g/mL (Mercury Porosimetry)

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Allgemeine Beschreibung

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

Anwendung

  • 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.

Hinweis zur Analyse

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

Rechtliche Hinweise

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

Piktogramme

Health hazard

Signalwort

Danger

Gefahreneinstufungen

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

Zielorgane

Lungs

Lagerklassenschlüssel

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

WGK

nwg


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Die Dokumentenbibliothek aufrufen

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
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
Bostjan Genorio et al.
ACS nano, 6(5), 4231-4240 (2012-04-04)
A cost-effective and potentially industrially scalable, in situ functionalization procedure for preparation of soluble graphene nanoribbon (GNRs) from commercially available carbon nanotubes is presented. The physical characteristics of the functionalized product were determined using SEM, evolved gas analysis, X-ray diffraction
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

Artikel

Graphene is a unique two-dimensional (2D) structure of monolayer carbon atoms packed into a dense honeycomb crystal that has attracted great interest due to its diverse and fascinating properties.

Since its discovery little more than a decade ago,1 the two-dimensional (2D) allotrope of carbon—graphene—has been the subject of intense multidisciplinary research efforts.

Graphene's unique properties spark interdisciplinary interest; its honeycomb structure offers electrical, optical, and mechanical marvels.

Graphene nanoribbons (GNRs) are quasi-one-dimensional narrow strips of graphene comprised of sp2-hybridized carbon atoms arranged into hexagonal honeycomb lattice configurations.

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Unser Team von Wissenschaftlern verfügt über Erfahrung in allen Forschungsbereichen einschließlich Life Science, Materialwissenschaften, chemischer Synthese, Chromatographie, Analytik und vielen mehr..

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