Synthesis method of platy-ZnSe fluorescent nano monocrystal

[0047] Synthesis of flaky ZnSe fluorescent nano single crystals:

[0048] 1. First, heat 0.6 mmol of selenium and 1 g of trioctylphosphine in an oil bath at 40° C. under the protection of nitrogen, and stir for one hour to obtain a selenium precursor.

[0049] 2. Stir and mix 2 g of octadecene, 0.085 mmol of zinc stearate, and 0.4 mmol of octadecylamine under the protection of nitrogen to obtain a zinc precursor. The zinc precursor was "activated" by stirring at 50°C for 3 hours.

[0050] 3. Add 8 mmol of octadecyl mercaptan to the zinc precursor under nitrogen protection, and then stir at 50° C. for 1 hour to perform “template” treatment.

[0051] 4. Continue to raise the temperature of the zinc precursor system to 305°C under the protection of nitrogen, and quickly inject the selenium precursor into the zinc precursor while stirring. At this time, the temperature of the reaction system drops to 275°C, and the nanocrystals begin to grow, and the reaction start the timer.

[0

[0055] 1. Firstly, 0.6 mmol of selenium and 1 g of trioctylphosphine were heated at 40° C. under the protection of argon and ultrasonicated for half an hour to obtain a selenium precursor.

[0056] 2. Stir and mix 2 g of octadecene, 0.1 mmol of zinc stearate, and 0.8 mmol of octadecylamine under the protection of argon to obtain a zinc precursor. The zinc precursor was "activated" by ultrasonication at 70°C for 1 hour.

[0057] 3. Add 8 mmol of octadecyl mercaptan to the zinc precursor under nitrogen protection, and then stir at 65° C. for 0.5 hour to perform “template” treatment.

[0058] 4. Continue to raise the temperature of the zinc precursor system to 305°C under the protection of argon, and quickly inject the selenium precursor into the zinc precursor while stirring. At this time, the temperature of the reaction system drops to 275°C, and the nanocrystals begin to grow. The reaction starts timing.

[0059] 5. After the nanocrystals start to grow, when the reaction time r

[0062] 1. First, 0.6 mmol of selenium and 1 g of trioctylphosphine were heated at 40° C. under nitrogen protection and ultrasonicated for half an hour to obtain a selenium precursor.

[0063] 2. Fully grind the zinc precursor composed of 2 g of octadecene, 0.085 mmol of zinc stearate, and 0.8 mmol of hexadecylamine at 25° C. for 3 hours to realize its “activation” treatment.

[0064] 3. Add 4 mmol of octadecyl mercaptan to the zinc precursor under nitrogen protection, and then stir at 70° C. for 1 hour to perform “template” treatment.

[0065] 4. Under the protection of nitrogen, raise the temperature of the zinc precursor system to 315°C, quickly inject the selenium precursor into the zinc precursor while stirring, at this time, the temperature of the reaction system drops to 290°C, the nanocrystals begin to grow, and the reaction start the timer.

[0066] 5. After the nanocrystals start to grow, when the reaction time reaches 1 hour and 30 minutes, stop heating and end the rea