Preparation method of carbon dots soluble in water phase and organic phase
A technology of organic phase and carbon dots, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of expensive reaction equipment, cumbersome reaction process, harsh reaction conditions, etc., and achieve preparation Simple method, good water solubility and good optical performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach 1
[0021] Weigh 200 mg of sweet potato starch, add 50 mL of deionized water, and heat at 70°C under magnetic stirring until the starch is completely swollen in deionized water. The above solution was added into the reactor and reacted at 160°C for 12h. The reaction solution was first centrifuged (10000r / min, 20min) to remove large solid particles and then filtered with a 0.22μm membrane filter. The solution was dialyzed for 48 h with a dialysis bag with a molecular weight cut off of 3500 Da. The obtained solution is extracted three times with dichloromethane, the upper aqueous phase solution is the carbon dot solution dissolved in the water phase; the lower dichloromethane phase solution is the carbon dot solution dissolved in the organic phase.
Embodiment approach 2
[0023] Weigh 200 mg of sweet potato starch, add 50 mL of deionized water, and heat at 70°C under magnetic stirring until the starch is completely swollen in deionized water. The above solution was added into the reactor and reacted at 160°C for 24h. The reaction solution was first centrifuged (10000r / min, 20min) to remove large solid particles and then filtered with a 0.22μm membrane filter. The solution was dialyzed for 48 h with a dialysis bag with a molecular weight cut off of 3500 Da. The obtained solution is extracted three times with dichloromethane, the upper aqueous phase solution is the carbon dot solution dissolved in the water phase; the lower dichloromethane phase solution is the carbon dot solution dissolved in the organic phase.
Embodiment approach 3
[0025] Weigh 200 mg of sweet potato starch, add 100 mL of deionized water, and heat at 70°C under magnetic stirring until the starch is completely swollen in deionized water. The above solution was added into the reactor and reacted at 180°C for 12h. The reaction solution was first centrifuged (10000r / min, 20min) to remove large solid particles and then filtered with a 0.22μm membrane filter. The solution was dialyzed for 48 h with a dialysis bag with a molecular weight cut off of 3500 Da. The obtained solution is extracted three times with dichloromethane, the upper aqueous phase solution is the carbon dot solution dissolved in the water phase; the lower dichloromethane phase solution is the carbon dot solution dissolved in the organic phase.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More