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Carboxylated Graphene Quantum Dots Powder

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SKU# 1192

Carboxylated Graphene Quantum Dots‚ Powder‚ CAS NO.: 7440-40-0

Product Detail

CAS NO.: 7440-40-0

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 10 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.

1. Preparation Method

Precursor pyrolysis

2. Characterizations


Carboxylated Graphene Quantum Dots


pale yellow powder

PL peak:

487 nm (reference only, actual value may vary)

Particle Size:

<10 nm



Emission Photos (1) of ACS Material Carboxylated Graphene Quantum Dots Excited

by Natural Light (left) and UV Light (right)

TEM Image (2) of ACS Material Carboxylated Graphene Quantum Dots 

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

3. 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.


1. What is the synthesis method of this product? 

The synthesis method is made of small organic molecules (bottom-up method).


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. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. Abidin, Shariffah Nur Jannah Syed Zainol, et al. “Electropolymerization of poly(3,4-Ethylenedioxythiophene) onto polyvinyl alcohol-Graphene quantum dot-Cobalt oxide nanofiber composite for high-Performance supercapacitor.” Electrochimica Acta, vol. 261, 2018, pp. 548–556., doi:10.1016/j.electacta.2017.12.168.
  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.
  16. Sarkar, Kalyan Jyoti, K. Sarkar, B. Pal, and P. Banerji. "Graphene quantum dots as charge trap elements for nonvolatile flash memory." Journal of Physics and Chemistry of Solids 122 (2018): 137-142.