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Water Soluble Cadmium Selenide Quantum Dots (CdSe/ZnS) 525 nm

Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) core–shell quantum dots, precisely tuned for a 525 ± 10 nm emission, deliver high-performance fluorescence in the green spectral region. The CdSe core is epitaxially passivated with a ZnS shell, effectively reducing surface defects and suppressing non-radiative recombination, which ensures strong photoluminescence efficiency and enhanced stability. These nanocrystals exhibit a narrow FWHM (<25 nm) and excellent quantum yields (>70% with MPA/CA/GSH ligands, >60% with PEG-COOH/PEG-NH2 ligands), producing bright, spectrally pure signals with minimal overlap. Their water-soluble ligand chemistry provides superior dispersibility in aqueous systems, making them highly suitable for biosensing, fluorescence imaging, and advanced photonic integration. With a balance of optical precision, biocompatibility, and versatile surface functionalization, the 525 nm dots represent a reliable material for both research and industrial applications.

Technical Properties

Configurable Parameters

Applications

• Multiplexed Bioimaging: Strong green emission enables multi-color imaging in biological systems, supporting simultaneous visualization of diverse cellular targets.
• Biosensing & Diagnostics: Integrated into immunoassays and FRET-based biosensors, the 525 nm emission enhances sensitivity for detecting proteins, pathogens, and disease biomarkers.
• Fluorescence-Guided Drug Delivery: Functionalized with biocompatible ligands to track therapeutic carriers in vivo, allowing precise monitoring of drug distribution pathways.
• Environmental Monitoring: Applied in aqueous sensing systems for detecting heavy metal ions and pollutants, leveraging fluorescence quenching/enhancement for sensitive readouts.
• Photocatalysis & Energy Research: Utilized in solar energy conversion and photocatalytic water-splitting studies, benefiting from efficient charge transfer in aqueous environments.
• Biomedical Applications: Suitable for theranostic platforms that combine imaging with therapeutic functions, thanks to strong green emission and biocompatibility.