Product Structure: CdSe/ZnCdSeS/ZnS, with carboxyl group as the surface ligand.
Product Applications: Bioimaging, fluorescent labeling, optoelectronic devices, sensing technologies, advanced display materials, etc.
Storage Conditions: Sealed, avoid light, and keep at 4°C.
Alcohol-soluble CdSe/ZnS quantum dots (QDs) are high-performance semiconductor nanocrystals engineered with a CdSe core and a ZnS shell structure. This core–shell architecture effectively enhances the optical properties and stability of the quantum dots, resulting in bright fluorescence, high quantum yield, and improved resistance to photobleaching. Due to their excellent dispersibility in alcohol-based solvents, these QDs are particularly suitable for applications that require uniform solution processing and stable optical performance.
The typical structure of alcohol-Soluble CdSe/ZnS QDs consists of a CdSe core, a ZnCdSeS intermediate shell, and a ZnS outer shell. The CdSe core serves as the primary light-emitting center, responsible for the quantum dots' distinctive fluorescence properties. The ZnCdSeS gradient shell plays a crucial role in relieving lattice strain between the core and shell layers, which improves charge confinement and enhances overall photoluminescent performance. The outer ZnS shell serves as a protective barrier, passivating surface defects, which significantly increases the chemical stability and resistance to degradation under various conditions. In addition, the surface of these quantum dots is functionalized with carboxyl ligands, which improve solubility in alcohol solvents and provide potential reactive sites for further surface modification.
Alcohol-soluble CdSe/ZnS QDs exhibit several remarkable characteristics. They demonstrate excellent solubility in alcohols, enabling easy processing in polar solvent systems. These quantum dots also show high photoluminescence efficiency, ensuring strong and stable fluorescence signals. The emission spectrum features a narrow full width at half maximum (FWHM), which contributes to high color purity and precise optical performance. Moreover, the engineered shell structure provides enhanced stability, allowing the quantum dots to maintain their optical properties under various environmental conditions. Finally, the optimized synthesis process enables a lower cadmium content, which helps reduce potential toxicity risks while maintaining excellent luminescence performance.
| Catalog Number | PL Emission | FWHM | Surface Ligand | Quantum Yield | Solvent |
| NM-QD0265 | 450±10 nm | ≤25 nm | Carboxyl Group | ≥50% | Methanol/Ethanol |
| NM-QD0266 | 470±10 nm | ≤25 nm | Carboxyl Group | ≥50% | Methanol/Ethanol |
| NM-QD0267 | 500±10 nm | ≤25 nm | Carboxyl Group | ≥50% | Methanol/Ethanol |
| NM-QD0268 | 525±10 nm | ≤25 nm | Carboxyl Group | ≥70% | Methanol/Ethanol |
| NM-QD0269 | 545±10 nm | ≤28 nm | Carboxyl Group | ≥70% | Methanol/Ethanol |
| NM-QD0270 | 625±10 nm | ≤28 nm | Carboxyl Group | ≥70% | Methanol/Ethanol |
| NM-QD0271 | 645±10 nm | ≤30 nm | Carboxyl Group | ≥70% | Methanol/Ethanol |
*If you can't find the needed QDs in the table, please send us an inquiry.
At Alfa Chemistry, we prioritize product excellence above all else. Our alcohol-soluble CdSe/ZnS QDs undergo stringent quality control to ensure they meet the most demanding industry standards. We understand that every application is distinct, which is why we offer a range of specifications for you to choose from, and the flexibility to tailor the properties of our QDs to suit your precise needs. If you are looking for high-quality, reliable materials for your research or development, don't hesitate to reach out to us. We are eager to collaborate with you and provide solutions that support your success.
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