Water-soluble cadmium zinc selenide fluorescent quantum dots are a new type of fluorescent materials, which have a wide range of application prospects in the fields of biological imaging, sensing, and display due to their unique advantages. Composed of cadmium, selenium, and zinc, these quantum dots have excellent optical properties and stability, are stable in aqueous solutions, and are easy to bind to biomolecules for biomolecular labeling and imaging. Such fluorescent quantum dots have a number of advantages. First, they have high fluorescence intensity, brightness comparable to traditional organic fluorescent dyes, and longer excitation and emission wavelengths for multicolor labeling and imaging. Secondly, water-soluble cadmium zinc selenide fluorescent quantum dots have good biocompatibility and low toxicity, are harmless to biological tissues, and are suitable for application in vivo. In addition, this fluorescent quantum dot also has excellent photostability and chemical stability, is not susceptible to light and oxidation, and can maintain long-term fluorescence performance.
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