Graphene Quantum Dots
CAS Number 7440-44-0
Low Dimensional Materials, Materials, Nanodots and Quantum Dots
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Graphene quantum dots - blueGraphene Quantum Dots, GQD particles in water
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Specifications | Pricing and Options | MSDS | Literature and Reviews
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Graphene quantum dots (GQDs), CAS number 7440-44-0, are referred to as small fragments of graphene with a two-dimensional lateral size less than 100 nm. However, majority of as prepared graphene quantum dots are multiple layers of graphene of sizes less than 10 nm, containing both hydrogen and oxygen. The difference between GQDs and CQDs is that GQDS are sp2 hybridized while CQDs are sp3 hybridized. The photoluminescence of CQDs is produced by surface passivation while GQDS is by quantum confinement.
The photoluminescent emission and excitation wavelengths of GQDs can be tuned by controlling the size of the nanoparticles, altering the surface properties or by the introduction of dopants into the carbon lattice. Due to large surface area and the oxygen-containing groups on the surface providing active sites for drug molecules carrying and loading, graphene quantum dots have relatively good biocompatibility in biological medicine than graphene or graphene oxides.
Being biocompatible, non-toxic, photo-stable, water-soluble, low cost and environmentally friendly, GQDs have shown significant potential in numerous fields such as energy devices, catalysis, sensing, photodynamic and photothermal therapy, drug delivery, and bioimaging.
Environmentally friendly
Eco friendly and non-toxic
Large surface area
Providing active sites
Low Cost
Low Cost Graphene Quantum Dots
Various Applications
Biosensing/bioimaging, Catalysis & Batteries
Applications of Graphene Quantum Dots
With high biocompatibility, photostability, environmentally low toxicity and low cost, graphene quantum dots find applications in drug medicine delivery, energy devices sensing and bioimaging.
- Biosensing/bioimaging
- Drug delivery
- Photothermal therapy
- Catalysis
- Batteries
- Organic Photovoltaic devices
Technical Data
| CAS Number | 7440-44-0 |
| Chemical Formula | C |
| Molecular Weight | 12.011 g/mol |
| Full Name | Graphene Quantum Dots |
| Synonyms | GQDs |
| Concentration | 1 mg/ml |
| Appearance | Suspension |
| Emission Peak | λem = 450 – 650 nm |
| Particle Size | <10 nm |
| Classification / Family | Carbon nanoparticles, Graphene, Quantum dots, Biosensing and bioimaging, Material science |
Pricing Table
| Product Code | Volume | Price |
| M2410 | 10 ml | £110.00 |
| M2410 | 25 ml | £220.00 |
| M2410 | 50 ml | £350.00 |
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MSDS Documents
Graphene quantum dots - blue MSDS Sheet
Graphene quantum dots - green MSDS Sheet
Graphene quantum dots - red MSDS Sheet
Literature and Reviews
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Graphene Quantum Dots and Their Applications in Bioimaging, Biosensing, and Therapy, S. Chung et al., Adv. Mater., 33 (22), 1904362 (2021); DOI: 10.1002/adma.201904362.
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Synthesis, Applications, and Prospects of Graphene Quantum Dots: A Comprehensive Review, A. Ghaffarkhah et al., Small, 18 (2), 2102683 (2022); DOI: 10.1002/smll.202102683.
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Bottom-Up Fabrication of Photoluminescent Graphene Quantum Dots with Uniform Morphology, R. Liu et al., J. Am. Chem. Soc., 133 (39), 15221–15223 (2011); DOI: 10.1021/ja204953k.