A kind of preparation method of fluorescent aqueous two-phase based on carbon quantum dots
A technology of carbon quantum dots and aqueous two-phase, which can be used in fluorescence/phosphorescence, chemical instruments and methods, luminescent materials, etc., and can solve the problems of complex synthesis methods and expensive synthesis instruments.
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Embodiment 1
[0028] a, phosphorus pentoxide wet chemical method to prepare carbon quantum dots: 0.08g 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF 4 ) was added to 4mL distilled water, stirred evenly, the mixed solution was put into a round-bottomed flask containing 5g phosphorus pentoxide and heated for 5min, the solution changed from colorless to yellow, and cooled to room temperature to obtain carbon quantum dots;
[0029] b. The application of the fluorescent aqueous two-phase of the present invention in drug detection, the above-mentioned 120 μL carbon quantum dots are dissolved in 5 mL of distilled water and then 1.5 g of sodium dihydrogen phosphate is added to establish a fluorescent two-water two-phase and the fluorescent two-water two-phase is used for The method of drug detection is carried out through the following steps: at room temperature, in several 10mL colorimetric tubes, sequentially add 120μL of prepared carbon quantum dots, 5mL of distilled water and 1.5g of s...
Embodiment 2
[0031] a. Prepare carbon quantum dots by phosphorus pentoxide wet chemical method: add 0.40g 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([Emim]OTF) into 6mL distilled water, stir well, mix Put the solution into a round-bottomed flask containing 4.5 g of phosphorus pentoxide and heat it for 6 minutes, the solution turns from colorless to yellow, and cools to room temperature to obtain carbon quantum dots;
[0032] b. The application of the fluorescent aqueous two-phase of the present invention in drug detection, the above-mentioned 180 μL carbon quantum dots are dissolved in 4 mL of distilled water and then 3.6 g of sodium dihydrogen phosphate is added to establish a fluorescent two-water phase and the fluorescent two-water phase is used for The method of drug detection is carried out through the following steps: at room temperature, in several 10mL colorimetric tubes, sequentially add 180μL of prepared carbon quantum dots, 4mL of distilled water and 3.6g of sodium di...
Embodiment 3
[0034]a. Prepare carbon quantum dots by phosphorus pentoxide wet chemical method: add 0.30g 1-hexyl-3-methylimidazolium chloride salt ([Hmim]Cl) to 1mL distilled water, stir evenly, put the mixed solution into a 5.5 Heating in a round-bottomed flask of g phosphorus pentoxide for 5min, the solution turns from colorless to yellow, and is cooled to room temperature to obtain carbon quantum dots;
[0035] b. The application of the fluorescent aqueous two-phase of the present invention in drug detection, the above-mentioned 140 μL carbon quantum dots are dissolved in 8 mL of distilled water and then 3.8 g of sodium dihydrogen phosphate is added to establish a fluorescent two-water two-phase and the fluorescent two-water two-phase is used for The method of drug detection is carried out through the following steps: at room temperature, in several 10mL colorimetric tubes, sequentially add 140μL of prepared carbon quantum dots, 8mL of distilled water and 3.8g of sodium dihydrogen phosph...
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