Water Soluble Carbon Quantum Dots 528±10 nm

Water Soluble Carbon Quantum Dots (528±10 nm emission) are high-performance, zero-dimensional nanomaterials engineered for superior aqueous dispersibility and remarkable optical brightness in the green visible spectrum. Distinguished by their carbon-based lattice, these CQDs offer a sustainable and non-toxic alternative to traditional heavy-metal semiconductors, making them the gold standard for applications requiring high biocompatibility and eco-safety. The surface chemistry is rich in oxygen-containing functional groups, which not only ensures long-term colloidal stability but also provides versatile conjugation sites for the covalent attachment of proteins, antibodies, and nucleic acids. With their robust resistance to photobleaching and high quantum yield, these 528 nm CQDs bridge the gap between advanced molecular labeling and environmentally conscious nanotechnology, ensuring reliable and high-contrast performance in diverse aqueous environments.

Applications

• Fluorescence Bioimaging: Used as a safe and bright fluorescent probe for high-contrast cellular and intracellular imaging, providing a stable green signal that is easily distinguishable from cellular background noise.
• Selective Biosensing: Acts as a sensitive transducer for the detection of metabolites, glucose, and specific pathogens, utilizing fluorescence quenching or enhancement mechanisms for rapid diagnostics.
• Environmental Monitoring (Heavy Metal Detection): Enables the trace-level identification of toxic metal ions, such as Pb2+, Cd2+, and Cu2+, in water resources through highly selective ion-surface interactions.
• Precision Photocatalysis: Leverages its excellent electron transfer properties to accelerate the degradation of organic pollutants and dyes under solar or UV irradiation, promoting green wastewater treatment.
• Smart Drug Delivery Systems: Functions as a traceable nanocarrier that allows for the real-time monitoring of therapeutic release and distribution within biological systems via fluorescence tracking.
• Anti-Counterfeiting & Security Inks: Employed in the formulation of water-based security inks for document protection, where the 528 nm green fluorescence serves as a distinct, hard-to-replicate authentication marker.