Alcohol-Soluble Quantum Dots (QDs)

Quantum dots (QDs) are semiconductor nanocrystals that possess unique optical and electronic properties resulting from quantum confinement effects. Among the many types of quantum dots, alcohol-soluble quantum dots have attracted increasing attention due to their excellent dispersibility in polar organic solvents such as methanol, ethanol, and isopropanol. Unlike traditional hydrophobic quantum dots that require nonpolar solvents, alcohol-soluble QDs provide improved compatibility with a wide range of chemical and biological systems, making them highly valuable in scientific research and advanced material development.

The solubility of these quantum dots in alcohols is typically achieved through surface modification with functional ligands, such as carboxyl, hydroxyl, or other polar groups. These ligands not only enhance solvent compatibility but also improve the stability of the nanocrystals by preventing aggregation and surface degradation. Therefore, these quantum dots are able to maintain strong fluorescence emission, narrow spectral bandwidth, and high photostability.

Typical Applications

Due to their unique combination of optical properties and solvent compatibility, alcohol-soluble quantum dots have found applications in a variety of scientific and technological fields. In biomedical research, they are widely used as fluorescent probes for imaging, labeling, and tracking biomolecules because of their high brightness and resistance to photobleaching.

In the field of optoelectronics, alcohol-soluble QDs can be integrated into light-emitting diodes (LEDs), display technologies, and photodetectors. Their tunable emission properties enable precise color control, which is essential for high-quality display systems and advanced lighting technologies.

Additionally, these nanomaterials are increasingly explored in chemical sensing and analytical detection. The fluorescence of quantum dots can respond sensitively to changes in the surrounding environment, such as pH, metal ions, or biomolecules. This property enables the development of highly sensitive sensors for environmental monitoring, biomedical diagnostics, and industrial analysis.

Our Products

Alfa Chemistry provides a range of carefully engineered alcohol-soluble quantum dots designed to deliver reliable optical performance and excellent stability for research and development applications.

• Alcohol-Soluble CdSe/ZnS QDs

These quantum dots typically feature a CdSe core with a ZnCdSeS gradient shell and an outer ZnS protective layer. This core–shell architecture improves charge confinement and reduces surface defects, resulting in strong fluorescence intensity and narrow emission bandwidth. Surface functionalization with carboxyl ligands enables good dispersion in alcohol solvents while maintaining excellent photostability.

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• Alcohol-Soluble ZnCdS/ZnS QDs

ZnCdS/ZnS quantum dots adopt an alloyed ZnCdS core combined with a ZnS shell structure. The alloy composition helps reduce lattice mismatch with the shell layer, thereby improving structural stability and emission efficiency. These quantum dots exhibit high luminescence efficiency, narrow full width at half maximum (FWHM), and good chemical stability, making them suitable for various optical and sensing applications.

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Choose Alfa Chemistry

With extensive experience in nanomaterial development, Alfa Chemistry is committed to providing high-quality quantum dots designed to meet the evolving needs of scientific research and technological innovation. Our alcohol-soluble quantum dots are produced using carefully optimized synthesis processes to ensure consistent particle size, reliable optical performance, and excellent solvent compatibility. If you have any requirements, please feel free to contact us.