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Water Soluble Cadmium Selenide Quantum Dots (CdSe/ZnS) 470 nm

Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) core–shell quantum dots, precisely engineered for a 470 nm emission, deliver a high-performance solution for blue-cyan optical applications. The CdSe core is epitaxially passivated with a ZnS shell, effectively reducing surface defects and suppressing non-radiative recombination, which results in strong photoluminescence efficiency and enhanced photostability. Exhibiting a narrow FWHM (<25 nm) and robust quantum yields (>50% with MPA/CA/GSH ligands, >40% with PEG-COOH/PEG-NH2 ligands), these nanocrystals provide bright, well-defined signals with minimal spectral overlap. Their water-soluble ligand chemistry ensures excellent dispersibility in aqueous systems, making them highly suitable for biosensing, fluorescence imaging, and integration into advanced photonic devices. The combination of optical precision, environmental compatibility, and versatile surface functionalization positions these 470 nm dots as a reliable material for both research and industrial applications.

Technical Properties

Configurable Parameters

Applications

• Multiplexed Bioimaging: Functions as a bright and stable fluorescent probe in aqueous biological systems, enabling multi-color imaging of cells and tissues when combined with longer-wavelength emitters.
• Fluorescence-Guided Diagnostics: Applied in biosensing assays and FRET-based platforms, where the strong 470 nm emission enhances sensitivity for detecting proteins, pathogens, and cancer biomarkers.
• Blue-Cyan Fluorescence Imaging: Provides a distinct emission in the blue-cyan region, minimizing spectral overlap and improving resolution in advanced microscopy and flow cytometry applications.
• Drug Delivery Tracking: Functionalized with biocompatible ligands (MPA, CA, GSH, PEG derivatives) to monitor therapeutic carriers in vivo, allowing precise visualization of distribution pathways.
• Environmental Monitoring: Utilized in water-based sensing systems for detecting heavy metal ions and pollutants, where fluorescence quenching or enhancement serves as a sensitive readout.
• Photocatalysis & Energy Research: Integrated into aqueous photocatalytic systems and solar energy conversion studies, leveraging efficient charge transfer and strong absorption in the UV-blue range.