Aqueous Carbon Quantum Dots

Product Name

Aqueous Carbon Quantum Dots (CQDs)

Material Type

Carbon-based fluorescent nanomaterial

Appearance

Clear to slightly yellow/brown liquid

Form

Stable aqueous dispersion

CQD Concentration

1–10 mg/mL*

Particle Size

Typically 2–10 nm

Average Particle Size

3–6 nm

Carbon Content

Grade dependent

Surface Functional Groups

–OH, –COOH, C=O, C–O and other oxygen-containing groups

pH

5–8*

Water Solubility/Dispersibility

Completely dispersible in water

Fluorescence

Strong photoluminescence; excitation-dependent or excitation-independent depending on synthesis

UV Absorption

Typically observed in the UV region

Photoluminescence

Typically blue/green/yellow emission depending on surface chemistry and synthesis

Quantum Yield

Typically 5–50%*

Zeta Potential

Typically negative; value depends on surface functionalization

Stability

Good colloidal stability under recommended storage conditions

Heavy Metals

As per application/regulatory requirement

Microbial Load

Application dependent

Storage Temperature

2–8°C recommended

Shelf Life

Typically 6–12 months*

Packaging

10 mL, 25 mL, 50 mL, 100 mL, 500 mL, 1 L or customized