Composition
A technology of composition and compound, applied in the direction of electrical components, nanotechnology, electric solid devices, etc., can solve problems such as poor thermal stability
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Embodiment 1
[0165] Working Example 1 - Synthesis of InP / ZnSe Quantum Materials
[0166] 0.7 μL of InP cores were prepared using a publicly available method (as described in WO 2018 / 215396 A1), which was then mixed with 600 μL of toluene and transferred to a four-necked flask. Then add 18.8mL oleylamine and 4.4mL ZnCl 2 . The mixture was kept under vacuum at 35 °C for 30 min. Then, the mixture was heated to 250° C. under argon for 30 minutes.
[0167] After the above nucleation treatment, the mixture was cooled to 190 °C and 10.4 mL of ZnCl in oleylamine was added 2 . At 180 °C, 1.8 mL of TOP:Se (2M) was injected. The mixture was heated to 200°C for 30 minutes and then to 320°C before injecting 12.4 mL of zinc undecylanate (0.4M) in oleylamine.
[0168] Working Example 2 - Purification of the Quantum Material from Example 1 .
[0169] 1 mL of the sample from Example 1 was purified from excess ligand using toluene and ethanol as solvent and antisolvent, respectively, followed by cent...
Embodiment 6
[0178] Working example 6——Synthesis of InP / ZnSeS quantum material
[0179] Mix 0.7 μL of InP cores with 600 μl of toluene and transfer to a four-necked flask. Then add 14.8mL oleylamine and 4.4mL ZnCl 2 . The mixture was kept under vacuum at 35 °C for 30 min. Then, the mixture was heated to 250° C. under argon for 30 minutes.
[0180] After the above nucleation treatment, the mixture was cooled to 190 °C and 10.4 mL of ZnCl in oleylamine was added 2 . At 180 °C, 1.8 mL of TOP:Se (2M) was injected. The mixture was heated to 200° C. for 30 minutes, then to 320° C., and then 12.4 mL (0.4 M) of zinc undecanoate in oleylamine and 0.54 mL of dodecylmercaptan were added dropwise.
[0181] Working Example 7 - Purification of Quantum Material from Example 6
[0182] 1 mL of the sample from Example 6 was purified from excess ligand using toluene and ethanol as solvent and antisolvent, respectively, followed by centrifugation and drying. This cleaning was repeated twice. The obt...
Embodiment 8
[0184] Working Example 8 - Stability of Quantum Material from Example 7 in Thermal Tests
[0185] 0.5 mL of quantum dots (30 mg / mL) in toluene was dried under argon to remove toluene. The vial was then opened to air and heated at 150°C for 1 hour. Then, the solid was redissolved in toluene, and the QY was measured using a Hamamatsu absolute quantum yield spectrometer (model: Quantaurus C11347).
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