cuins 2 Preparation method of alloy quantum dots
A technology of quantum dots and quantum dot solutions, applied in chemical instruments and methods, gallium/indium/thallium compounds, inorganic chemistry, etc., can solve problems such as the composition and size of alloy quantum dots are difficult to effectively control, and achieve uniform and stable size structure, The particle size is synchronously uniform and stable, and the effect of reducing environmental pollution
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[0012] The embodiment of the present invention provides a CuInS 2 Preparation method of alloy quantum dots, the CuInS 2 Alloy quantum dots are prepared by cation exchange technology, which specifically includes the following steps:
[0013] S01. Preparation of In 2 S 3 Quantum dots: provide inorganic indium salt, elemental sulfur, organic amine or organic phosphine, mix the inorganic indium salt, elemental sulfur with the organic amine or organic phosphine, stir and degas under an inert atmosphere to form a mixed solution, and mix the The mixed solution was heated to 80-150°C under an inert atmosphere, kept at a temperature of 35-80 minutes, continued to be heated to 180-250°C, and reacted for 40-80 minutes to prepare In 2 S 3 quantum dots;
[0014] S02. Preparation of CuInS 2 Alloy quantum dots: the In 2 S 3 The quantum dots were dissolved in a non-polar solvent and stirred under an inert atmosphere to obtain In 2 S 3 Quantum dot solution; dissolving the copper ion ...
Embodiment 1
[0035] A red-emitting CuInS with an aspect ratio of 10nm:5nm 2 A method for preparing alloy quantum dots, comprising the following steps:
[0036] S11. Preparation of In 2 S 3 Quantum dots: 1mmol anhydrous indium chloride (InCl 3 ), 1.5mmol elemental sulfur (Sulfur) and 20ml oleylamine (Oleylamine) were mixed at the same time, stirred under vacuum for 30mins and degassed for 60mins, then heated the degassed mixture to 110°C under an inert atmosphere, kept it for 1h, and continued to heat to 215°C, react for 1h, and produce In 2 S 3 alloy quantum dots. Stop heating, wait for the reaction solution to cool down to room temperature, precipitate with methanol, centrifuge and purify, then dissolve with toluene, precipitate with methanol, and purify by centrifugation. Repeated many times can obtain In which satisfies the purity condition 2 S 3 alloy quantum dots.
[0037] S12. Preparation of CuInS by Cation Exchange 2 Alloy quantum dots: In an inert gas atmosphere, 1mmol In...
Embodiment 2
[0039] A near-infrared luminescent CuInS with an aspect ratio of 10nm:5nm 2 A method for preparing alloy quantum dots, comprising the following steps:
[0040] S21. Preparation of In 2 S 3 Quantum dots: Mix 1mmol anhydrous indium chloride, 1.5mmol elemental sulfur and 20ml oleylamine at the same time, stir under vacuum for 30mins and degas for 60mins, then heat the degassed mixture to 110°C under an inert atmosphere, and keep it warm for 1h , continue heating to 215°C, react for 1h, and produce In 2 S 3 alloy quantum dots. Stop heating, wait for the reaction solution to cool down to room temperature, precipitate with methanol, centrifuge and purify, then dissolve with toluene, precipitate with methanol, and purify by centrifugation. Repeated many times can obtain In which satisfies the purity condition 2 S 3 alloy quantum dots.
[0041] S22. Preparation of CuInS by Cation Exchange 2 Alloy quantum dots: In an inert gas atmosphere, 1mmol In 2 S 3 Alloy quantum dots we...
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