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Magnetic Quantum Dots - Red

MQDs-Red (ex. 356, em. 655), water-soluble, size 90~150 nm (~10 nm core CdSe/CdS/ZnS surrounded by ~5 nm Fe3O4 NPs).

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Reaction conditions, nanocrystal growth and post synthesis modifications are available in our published article here.


Available quantities: 5 mg, 10 mg and 20 mg vials in one week time duration  50 mg and above 15~30 days


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Long-term photostability
Bright red emission at 653 nm with high QY
Long shelf life at 4 ˚C (6~12 months)
Average MQD size: 50~150 nm

Magnetic Quantum Dots - Red

Magnetic Quantum Dots Red (MQDs-Bright Red) in water

  • Bright orange luminescent under UV365
  • Magnetic
  • Total Size: 50~100 nm (Core CdSe/CdS/ZnS QDs = ~7 nm; Shell coating with magnetic Fe3O4 NPs = ~5 nm)
  • Chemical reactivity: -COOH, -NH2
  • Excitation wavelength: 365 nm
  • Emission wavelength: 653 nm
  • Appearance: Colorless to light brown (normal light), bright red under UV356 light
  • Nanocrystals suspension solvent: water

MQDs-Bright Red are specifically designed and developed to meet the requirements of Point-of-Care bioassays, imaging, drug-delivery, display and sensor technological industry for downconverting materials. The nanomaterial has unique multimodal functionality with magnetic, photoluminescence and chemical along with high reliability. The material has free -COOH and -NH2 functionality readily available for customized conjugation/linking with desired molecules, drugs, proteins or antibodies. The material has high watersolubility and compatible with physiological saline or PBS.

CdSe/CdS/ZnS nanocrystals decorated with Fe3O4 nanoparticles for pointof- care optomagnetic detection of cancer biomarker in serum

Early diagnosis of a progressive cancer disease is currently limited due to lack of adequate point-of-care (PoC) diagnostic tools. PoC diagnosis enables detecting early signs of a disease and ave way to disease prevention.Here, we developed an immuno-optomagnetic quantum dots based PoC assay for early detection of a cancer biomarker, human epidermal growth factor receptor-2 (hErbB2) protein in serum. This assay utilizes immunooptomagnetic quantum dots (MQDs-Ab2) nanoarchitectures with unique orientation comprised of core CdSe/ CdS/ZnS QD nanocrystals surrounded by layers of magnetic Fe3O4 nanoparticles (MNPs) and a bioactivated borofloat PoC-chip (Ab1). The MQDs-Ab2 and the PoC-chips were designed to bind same hErbB2 analyte,.. Read More

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