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Green Graphene Quantum Dots

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Green Graphene Quantum Dots‚ Solution‚ CAS NO.: 7440-40-0

Product Detail

CAS NO.: 7440-40-0

Graphene quantum dots (GQDs) are fueling the imagination of researchers around the world. These nanoscale particles possess unique and fascinating physical properties such as strong quantum confinement and edge effects and robust, tunable photoluminescence; modifying the size, shape, and defects allows users to tailor the GQDs to specific functions and applications. Green graphene quantum dots give off a distinct green glow.

GQDs inherit a number of valuable characteristics from graphene, enhancing their potential for various applications. Unlike metal or silicon quantum dots, graphene quantum dots are biocompatible and photo stable. They also demonstrate outstanding electrical, thermal, and mechanical properties that are all directly attributable to the graphene component. The possible uses for GQDs are in the most infant stages; the impact of QDS remains to be discovered. Opportunities include:

  • Batteries
  • Biometric markers for imaging
  • Memory devices
  • Photovoltaics
  • Fluorescent polymers
  • Sensors for heavy metals, humidity, and pressure
  • LEDs
  • Optical brighteners
  • Antibacterial and disinfection systems

 Find the most cutting-edge nanomaterials at ACS Material online today. We’ve got the materials you want at prices you can afford.

Types of Graphene Quantum Dots Products
Product No. Product Name Type Carrier Standard Concentration Maximum Concentration Size
GNQD0101 Blue Luminescent GQDs Solution Water 1 mg/ml 20 mg/ml 100ml
GNQD0131 Eth
GNQD0151 Blue Luminescent GQDs Powder Powder - - - 100mg
GNQD0201 Aminated GQDs  Solution Water 1 mg/ml 20 mg/ml 100ml
GNQD0221 Aminated GQDs Powder Powder - - - 100mg
GNQD0301 Carboxylated GQDs Solution Water 1 mg/ml 20 mg/ml 100ml
GNQD0701 Carboxylated GQDs Powder Powder - - - 100mg
GNQD0401 Chlorine Functionalized GQDs Solution Water 1 mg/ml 2 mg/ml 100ml
GNQD0511 Green GQDs Solution Eth 1 mg/ml 1 mg/ml 100ml
GNQD0501 Green GQDs Solution Water 1 mg/ml 10 mg/ml 100ml
GNQD0601 Hydroxylated GQDs Solution Water 1 mg/ml 2 mg/ml 100ml
GQDW0101 Imidazole-Modified GQDs Solution Water 1 mg/ml 10 mg/ml 100ml
GQD001A1 Imidazole-Modified GQDs Powder Powder - - - 100mg
GQD001A5 500mg
GQD00101 1g

 -- New added products!

* Shelf life

  • Carboxylated and Green GQDs: ~ 3 months;
  • the rest of GQDs products:~ 6 months;
  • recommand to use them as soon as possible after open the bottle.

Please contact us if you need products other than the standard concentration and carriers listed in the table.

Preparation Method

Hydrothermal method



Green Graphene Quantum Dots


Colorless solution

PL peak:

530 nm (reference only, actual value may vary)

Particle Size:

<6 nm


1 mg/mL, Max: 10 mg/mL


Water‚ containing a little DMF

Ethanol‚ containing a little DMF



Emission Photos of ACS Material Green Graphene Quantum Dots Excited

by Natural Light (left) and UV Light (center) and Graphene quantum dots in EtOH under UV light at 365 nm (right)

TEM Image of Green Graphene Quantum Dots

TEM Image of ACS Material Green Graphene Quantum Dots 

Size Distribution (3) of ACS Material Green Graphene Quantum Dots 


IR Spectra of ACS Material Green Graphene Quantum Dots

PL spectrum of ACS Material Green Graphene quantum dots in water

PL spectrum of ACS Material Green Graphene quantum dots in Ethanol

EDX Spectra of ACS Material Green Graphene Quantum Dots

Application Fields

Graphene quantum dots exhibit unique optical and electronic properties due to their quantum confinement and edge effects‚ and have a variety of novel applications‚ such as low-toxicity and photostable fluorescence probes for cell imaging and biosensing‚ low-cost acceptors for organic photovoltaic cells and light emitting diodes‚ a metal-free platform for surface-enhanced Raman scattering‚ and an upconverted sensitizer for modifying rutile TiO2 nanocrystals as a composite visible-light photocatalyst.

Conditions for safe storage:

Please use it as soon as possible and store at 4-24 oC in a tightly sealed container. Store in same type of container (glass/plastic) as shipped.  Do not freeze. 


Disclaimer: ACS Material LLC believes that the information on our website is accurate and represents the best and most current information available to us. ACS Material makes no representations or warranties either express or implied, regarding the suitability of the material for any purpose or the accuracy of the information listed here. Accordingly, ACS Material will not be responsible for damages resulting from use of or reliance upon this information.


1. What is the role of DMF in the Green Graphene Quantum Dots in Water?

DMF is an organic solvent with a maximum concentration of 10mg/ml in this product, and there will be a small amount of residue when diluted to 1mg/ml. In addition, the raw material is graphene oxide, which has good dispersibility and does not require additional dispersant. DMF is not a dispersant in the solution.


2. Is there doping in the Green Graphene Quantum Dots in Water?



3. What groups are on the surface of Green Graphene Quantum Dots?

There are a small amount of oxygen groups and amino groups on the surface.


Research Citations of ACS Material Products

  1. Li, Changzheng, and Yanan Yue. “Fluorescence spectroscopy of graphene quantum dots: temperature effect at different excitation wavelengths.” Nanotechnology, vol. 25, no. 43, Sept. 2014, p. 435703., doi:10.1088/0957-4484/25/43/435703.
  2. Bhatnagar, Deepika, et al. “Graphene quantum dots FRET based sensor for early detection of heart attack in human.” Biosensors and Bioelectronics, vol. 79, 2016, pp. 495–499., doi:10.1016/j.bios.2015.12.083.
  3. Liu, Yang, et al. “Electro-Optical switching of liquid crystals sandwiched between ion-Beam-Spurted graphene quantum dots-Doped PEDOT:PSS composite layers.” Optics Express, vol. 23, no. 26, 2015, p. 34071., doi:10.1364/oe.23.034071.
  4. Bhatnagar, Deepika, et al. “Ultrasensitive cardiac troponin I antibody based nanohybrid sensor for rapid detection of human heart attack.” International Journal of Biological Macromolecules, vol. 95, 2017, pp. 505–510., doi:10.1016/j.ijbiomac.2016.11.037.
  5. Nieto, Andy, et al. “Graphene reinforced metal and ceramic matrix composites: a review.” International Materials Reviews, vol. 62, no. 5, 2016, pp. 241–302., doi:10.1080/09506608.2016.1219481.
  6. Bok, Chang Han, et al. “Operating mechanisms of highly-Reproducible write-Once-Read-Many-Times memory devices based on graphene quantum dot:Poly(Methyl silsesquioxane) nanocomposites.” Applied Physics Letters, vol. 110, no. 1, Apr. 2017, p. 013301., doi:10.1063/1.4973358.
  7. Kim, Do Hyeong, et al. “Highly-Reproducible nonvolatile memristive devices based on polyvinylpyrrolidone: Graphene quantum-Dot nanocomposites.” Organic Electronics, vol. 51, 2017, pp. 156–161., doi:10.1016/j.orgel.2017.09.005.
  8. Gupta, Shagun, et al. “Ultrasensitive transglutaminase based nanosensor for early detection of celiac disease in human.” International Journal of Biological Macromolecules, vol. 105, 2017, pp. 905–911., doi:10.1016/j.ijbiomac.2017.07.126.
  9. Ooi, Poh Choon, et al. “Reduced graphene oxide preparation and its applications in solution-Processed write-Once-Read-Many-Times graphene-Based memory device.” Carbon, vol. 124, 2017, pp. 547–554., doi:10.1016/j.carbon.2017.09.004.
  10. Choi, Hwan Young, et al. “Organic electronic synapses with pinched hystereses based on graphene quantum-Dot nanocomposites.” NPG Asia Materials, vol. 9, no. 7, 2017, doi:10.1038/am.2017.133.
  11. Ooi, Poh Choon, et al. “Fabrication of transparent bistable switching memory device using plasmapolymerized hexamethyldisiloxane layers with embedded graphene quantum dots.” Thin Solid Films, vol. 645, 2018, pp. 45–50., doi:10.1016/j.tsf.2017.10.044.
  12. Wang, Changhong, et al. “Computing: Memristive Devices with Highly Repeatable Analog States Boosted by Graphene Quantum Dots.” Small, vol. 13, no. 20, 2017, doi:10.1002/smll.201770110.
  13. Bakar, Elyani Abu, Mohd Ambri Mohamed, Poh Choon Ooi, MF Mohd Razip Wee, Chang Fu Dee, and Burhanuddin Yeop Majlis. "Fabrication of indium-tin-oxide free, all-solution-processed flexible nanogenerator device using nanocomposite of barium titanate and graphene quantum dots in polyvinylidene fluoride polymer matrix." Organic Electronics 61 (2018): 289-295.
  14. Ooi, Poh Choon, MF Mohd Razip Wee, Chang Fu Dee, Chi Chin Yap, Muhammad Mat Salleh, and Burhanuddin Yeop Majlis. "Fabrication of transparent bistable switching memory device using plasmapolymerized hexamethyldisiloxane layers with embedded graphene quantum dots." Thin Solid Films 645 (2018): 45-50.
  15. Sung, Sihyun, Chaoxing Wu, Hyun Soo Jung, and Tae Whan Kim. "Highly-stable write-once-read-many-times switching behaviors of 1D–1R memristive devices based on graphene quantum dot nanocomposites." Scientific reports 8, no. 1 (2018): 12081.