Product Advantages: Small half-peak width of emission spectrum, high luminous efficiency, cadmium free, high stability.
Product Applications: Solar cells, optoelectronic devices, biofluorescent markers, imaging reagents, etc.
Storage Conditions: Sealed, avoid light, and keep at 4°C.
Product Description
Oil-soluble InP/ZnS quantum dots (QDs) are nanoscale semiconductor particles with a core-shell structure, consisting of an indium phosphide (InP) core surrounded by a shell of zinc sulfide (ZnS). The presence of the ZnS shell enhances the stability of the QDs as well as improves their optical properties. The term "oil-soluble" indicates that these QDs are synthesized in an organic phase solution. This enhances the compatibility of InP/ZnS QDs with non-polar environments, enabling them to be widely used in flexible displays, bioimaging, and sensing.
Product Parameters
| Catalog Number | PL Emission | FWHM | Surface Ligand | Quantum Yield | Solvent |
| GH-QD0011 | 480±15 nm | ≤45 nm | TOP/Oleamine/Oleic Acid/Thiol | ≥50% | Toluene/Hexane/Octane |
| GH-QD0012 | 525±15 nm | ≤40 nm | TOP/Oleamine/Oleic Acid/Thiol | ≥75% | Toluene/Hexane/Octane |
| GH-QD0013 | 560±15 nm | ≤45 nm | TOP/Oleamine/Oleic Acid/Thiol | ≥60% | Toluene/Hexane/Octane |
| GH-QD0014 | 600±15 nm | ≤45 nm | TOP/Oleamine/Oleic Acid/Thiol | ≥80% | Toluene/Hexane/Octane |
| GH-QD0015 | 625±15 nm | ≤45 nm | TOP/Oleamine/Oleic Acid/Thiol | ≥80% | Toluene/Hexane/Octane |
| GH-QD0016 | 700±15 nm | ≤80 nm | TOP/Oleamine/Oleic Acid/Thiol | ≥50% | Toluene/Hexane/Octane |
*If you can't find the needed QDs in the table, please send us an inquiry.
Alfa Chemistry always puts product quality in the first place. Our oil-soluble InP/ZnS QDs are rigorously tested to meet the highest industry standards. In addition, we know that each project is unique. This is why our products have a variety of specifications to choose from, and you can customize the characteristics of these QDs according to your specific requirements. If you have any need, please contact us immediately. We look forward to establishing a close cooperative relationship with you.
Related Products
Water Solubilization of InP/ZnS Quantum Dots Through Silica Coating
Beloglazova, Natalia V., et al. Methods 116 (2017): 141-148.
Hydrophobic yellow and orange InP/ZnS quantum dots (QDs) were successfully encapsulated in silica shells (QD@SiO₂) using a water-in-oil microemulsion technique. These water-soluble fluorescent labels were then employed to develop a rapid qualitative immunofluorescent test for the simultaneous detection of two mycotoxins: zearalenone (ZEN) and deoxynivalenol (DON).
Synthesis Process
1) Preparation of QD@SiO₂ Nanoparticles
A suspension of 1.5 nmol of InP/ZnS QDs was mixed with 2 mL of hexane and 0.64 mL of Brij L4. The mixture was stirred for 10 minutes to ensure uniform distribution. Then, 100 μL of 3 wt% ammonia aqueous solution was added dropwise to the mixture, followed by 30 minutes of stirring to ensure stability and homogeneity.
2) Silica Coating
After the initial stirring, 20 μL of tetraethyl orthosilicate (TEOS) was introduced into the mixture, and the reaction was allowed to continue under stirring for 24 hours. This step facilitated the formation of the silica shell around the quantum dots.
3) Functionalization
For functionalization, 0.4 μL of CEST was added to the microemulsion, and the suspension was stirred for an additional 24 hours.
4) Purification
The synthesis was terminated by adding 1.5 mL of ethanol to the mixture. The nanoparticles were collected via centrifugation (3000g for 10 minutes) and purified by repeated centrifugation cycles: first in Milli-Q water (10,000g for 30 minutes to remove residual Brij), then once in hexane, and four times in ethanol. The purified nanoparticles were re-dispersed in Milli-Q water.
5) Final Dispersion
The aqueous dispersion of the composite nanoparticles was obtained by sonication.
These water-soluble InP/ZnS QDs encapsulated in silica shells exhibit excellent stability and biocompatibility, making them suitable for use in immunofluorescent assays for the detection of mycotoxins in various biological samples.
