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Key Documents

900713

Sigma-Aldrich

Graphene quantum dots

aqua green luminescent, powder

Synonyme(s) :

GQDs

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About This Item

Numéro CAS:
7440-44-0
Numéro CE :
231-153-3
Code UNSPSC :
11101522
Nomenclature NACRES :
NA.23

Niveau de qualité

100

Description

topographic height: 1–2.0 nm

Forme

powder

Diamètre

<5 nm

Fluorescence

λex 485 nm; λem 525 nm FWHM 70 nm, quantum yield >17%

InChI

1S/C

Clé InChI

OKTJSMMVPCPJKN-UHFFFAOYSA-N

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Application

Graphene quantum dots (GQDs), sheets of few-layered graphene and lateral dimensions smaller than 100 nm, possess strong quantum confinement and edge effects. Thus, they possess unique physical properties such as strong photoluminescence, which can be tailored for specific applications by controlling their size, shape, defects, and functionality.
In contrast to classic QDs, such as metal or silicon quantum dots, GQDs are biocompatible, photo-stable, and inherit superior thermal, electrical, and mechanical properties from the graphene. These features can greatly contribute to various state-of-the-art applications:

  • Optical brighteners.
  • Taggants for security application.
  • Bioimaging markers.
  • Fluorescent polymers.
  • Antibacterial, antibiofouling, disinfection systems.
  • Heavy metals, humidity and pressure sensors.
  • Batteries.
  • Flash memory devices.
  • Photovoltaic devices.
  • Light-emitting diodes.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

nwg

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Certificats d'analyse (COA)

Lot/Batch Number
MKCM3276
MKCK9995
MKCJ5814
MKCG5889
MKCD4576

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Jianhua Shen et al.
Chemical communications (Cambridge, England), 48(31), 3686-3699 (2012-03-14)
Similar to the popular older cousins, luminescent carbon dots (C-dots), graphene quantum dots or graphene quantum discs (GQDs) have generated enormous excitement because of their superiority in chemical inertness, biocompatibility and low toxicity. Besides, GQDs, consisting of a single atomic
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Articles

Graphene Quantum Dots: Properties, Synthesis & Applications

Properties, synthesis & applications of Graphene Quantum Dots explained. GQDs have advantages of nontoxicity, good solubility, stable photoluminescence & better surface grafting.

Synthesis and Applications of Graphene Nanoribbons Synthesized

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

Synthesis and Applications of Graphene Nanoribbons Synthesized

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

Synthesis and Applications of Graphene Nanoribbons Synthesized

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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