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Carbon Nanodots


Product Code M2254B1
Price $225.00 ex. VAT

High purity, high PLQY Carbon Nanodots (C-dots)

Deep blue, blue green and infrared fluorescent carbon nanodots now available


Discovered by accident while researchers were purifying carbon nanotubes in 2004, carbon nanodots (CNDs, or simply C-dots) are nanoparticles with sizes below 10 nm. Like fullerene, carbon nanotubes, and graphene, carbon nanodots are surface‐passivated carbonaceous quantum dots. They are typically composed of carbon, oxygen, nitrogen and hydrogen.

The relative amount present of each of these elements depends on the synthesis process used to create the carbon nanodots. Carbon dots can be synthesised from different approaches featuring bright fluorescent emission tuneable across the visible range, high water solubility with rich hydrophilic surface groups, biocompatibility, high sensitivity to the external environment, and marked electron donating and accepting capabilities.

Compared with other semiconductor nanodots with heavy metal cores, carbon nanodots have a number of distinct benefits including chemical inertness, low toxicity, ease of functionalization and resistance to photobleaching. Carbon nanodots are versatile and can be used in a wide range of technologies, such as bioimaging, photocatalysis, sensing, lasers, LED, and energy conversion/storage devices.

Applications of Carbon Nanodots

For their excellent optical properties, high biocompatibility and environmentally low toxicity, carbon dots find applications in biosensing, drug delivery, bioimaging, light emitting diode (LED), logic gates and energy storage devices.

  • Biosensing/bioimaging
  • Drug delivery
  • Light-emitting diodes (LED)
  • Logic gates
  • Photocatlysis
  • Energy and charge transfer devides

Literature and Reviews

  • A Biocompatible Fluorescent Ink Based on Water-Soluble Luminescent Carbon Nanodots, S. Qu et al., Angew. Chem. Int. Ed. 2012, 51, 12215 –12218 (2012); DOI: 10.1002/anie.201206791.
  • Carbon Nanodots: Toward a Comprehensive Understanding of Their Photoluminescence, V. Strauss et al., J. Am. Chem. Soc., 136, 17308−17316 (2014); DOI: 10.1021/ja510183c.
  • Carbon Nanodots: A Review—From the Current Understanding of the Fundamental Photophysics to the Full Control of the Optical Response, A. Sciortino et al., C - J. Carb. Res., 2018, 4(4), 67; DOI: 10.3390/c4040067.
  • Novel properties and applications of carbon nanodots, L. Xiao et al., Nanoscale Horiz.,3, 565-597 (2018); DOI: 0.1039/C8NH00106E.
  • Synthesis and analytical applications of photoluminescent carbon nanodots, P-C. Hsu et al., Green Chem., 14, 917 (2012); 10.1039/c2gc16451e.
  • The photoluminescence mechanism in carbon dots (graphene quantum dots, carbon nanodots and polymer dots): current state and future perspective, S. Zhu et al., Nano Res., 8, 355–381(2015); DOI: 10.1007/s12274-014-0644-3.
  • Carbon nanodots: synthesis, properties and applications, H. Li et al., J. Mater. Chem.,22, 24230-24253 (2012); DOI: 10.1039/C2JM34690G.

Technical Data

Deep UV Fluorescent Carbon Nanodots (M2254A1)

CAS Number 7440-44-0
Chemical Formula C
Molecular Weight 12.011 g/mol
Full Name Carbon Nanodots
Synonyms C-dots
Purity 98.5%
Concentration > 250 mg / ml
Appearance Clear liquid
UV-Vis <190 and 270 nm
Emission Peak λem. = 302 and 420 nm by λexc. at 179 nm
Photoluminescence Quantum Yield 11.3%
PH Value 6.7 - 7
Particle Size 1.6 - 1.8 nm
Stability Highly stable at room temperature
Classification / Family Carbon, Carbon nanodots, Quantum dots, Biosensing and bioimaging, Material science

Intense Blue Fluorescent Carbon Nanodots (M2254C1)

CAS Number 7440-44-0
Chemical Formula C
Molecular Weight 12.011 g/mol
Full Name Carbon Nanodots
Synonyms C-dots
Purity 98.5%
Concentration > 130 mg / ml
Appearance Yellowish liquid
UV-Vis <190 and 300 nm
Emission Peak λem. = 450 nm by λexc. at 360 nm
Photoluminescence Quantum Yield 41.00%
PH Value 7.5
Particle Size 1.6 - 1.65 nm
Stability Highly stable at room temperature; high
and stable fluorescent intensity
Classification / Family Carbon, Carbon nanodots, Quantum dots, Biosensing and bioimaging, Material science

Green Fluorescent Carbon Nanodots (M2254B1)

CAS Number 7440-44-0
Chemical Formula C
Molecular Weight 12.011 g/mol
Full Name Carbon Nanodots
Synonyms C-dots
Purity ≥98%
Concentration >150 mg / ml
Appearance Dark brown liquid
UV-Vis >190, 274 and 410nm
Emission Peak λem. = 537 nm by λexc.  at 420 nm
Photoluminescence Quantum Yield 46%
PH Value 6.7 - 7
Particle Size 4.7 - 7 nm
Stability Stable at room temperature and over the pH range from 2 to 9.5
Classification / Family Carbon, Carbon nanomaterials, Quantum dots, Biosensing and bioimaging, Material science

Deep Red Carbon Nanodots (M2254E1)

CAS Number 7440-44-0
Chemical Formula C
Molecular Weight 12.011 g/mol
Full Name Carbon Nanodots, N-doped
Synonyms C-dots
Purity ≥98%
Concentration > 2 mg / ml
Appearance Clear pink liquid
UV-Vis
Emission Peak λem. = 600 - 627 nm from λexc.  at 534 - 540 nm
Photoluminescence Quantum Yield 15%
PH Value 7.2
Particle Size 5.0 - 5.21 nm
Stability Highly stable at room temperature; high and stable fluorescent intensity
Note N-doped CNDs could also fluoresce when excited at 635 nm thus minimizing the effect of auto-fluorescence and increasing the signal-to-background ratio
Classification / Family Carbon, Carbon nanomaterials, Quantum dots, Biosensing and bioimaging, Material science

NIR Carbon Nanodots (M2254D1)

CAS Number 7440-44-0
Chemical Formula C
Molecular Weight 12.011 g/mol
Full Name Carbon Nanodots
Synonyms C-dots
Purity ≥98%
Concentration > 40 mg / ml
Appearance Slight brown/yellow clear liquid
UV-Vis 237,  279 and 620nm
Emission Peak λem. = 705 nm from λexc.  at 480 nm
Photoluminescence Quantum Yield 31%
PH Value 7.5
Particle Size 5.5 - 5.7 nm
Stability Highly stable at room temperature; high and stable fluorescent intensity
Classification / Family Carbon, Carbon nanomaterials, Quantum dots, Biosensing and bioimaging, Material science

Spectral Data

Absorption/Emission Spectra of Deep UV Fluorescent Carbon NanodotsAbsorption/Emission Spectra of Deep UV Fluorescent Carbon Nanodots

Absorption/Emission Spectra of Intense Blue Fluorescent Carbon NanodotsAbsorption/Emission Spectra of Intense Blue Fluorescent Carbon Nanodots

Absorption/Emission Spectra of Green Fluorescent Carbon NanodotsAbsorption/Emission Spectra of Green Fluorescent Carbon Nanodots

Absorption/Emission Spectra of NIR Fluorescent Carbon NanodotsAbsorption/Emission Spectra of NIR Fluorescent Carbon Nanodots

MSDS Documents

Carbon Nanodots Deep UV Fluorescent MSDSDeep UV Fluorescent Carbon Nanodots

Carbon Nanodots Intense Blue Fluorescent MSDSIntense Blue Fluorescent Carbon Nanodots

Carbon Nanodots Green Fluorescent MSDSGreen Fluorescent Carbon Nanodots

Carbon Nanodots NIR Fluorescent MSDSNIR Fluorescent Carbon Nanodots

Pricing Table

Product Code Volume Price
M2254 10 ml £150.00
M2254 25 ml £360.00

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To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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