Carbon Quantum Dots (CQD)

Nanografi presents high-quality Carbon Quantum Dots tailored to suit specific requirements.

What are Carbon Quantum Dots?

Carbon Quantum Dots (CQDs) are nanoscale carbon-based materials with tunable photoluminescence across the visible spectrum, including 420 nm, 515 nm, 528 nm, and 590–620 nm emission ranges. They combine strong fluorescence, high biocompatibility, and chemical stability with excellent dispersibility in water and organic solvents. Their environmentally friendly composition makes them a safer alternative to heavy-metal-based quantum dots for biomedical and industrial applications.

Synthesis and Applications of Carbon Quantum Dots

Carbon Quantum Dots (CQDs) are synthesized using both Top-Down and Bottom-Up approaches. Top-Down methods include laser ablation, electrochemical oxidation, and chemical exfoliation of carbon sources, while Bottom-Up approaches involve hydrothermal or microwave-assisted reactions of organic precursors. These synthesis routes allow control over particle size, emission wavelength, and surface chemistry, enabling tailored optical and functional properties. CQDs are widely applied in bioimaging, biosensing & diagnostics, drug delivery & tracking, environmental monitoring, energy & photocatalysis, optoelectronics & LEDs.