A kind of boronated quantum dot ratio fluorescent probe and its preparation method and application
A ratiometric fluorescent probe and quantum dot technology, applied in chemical instruments and methods, fluorescence/phosphorescence, measuring devices, etc., can solve the problems of sample pretreatment and low sensitivity, large solvent consumption, time-consuming, etc., and achieve visual and rapid detection Blood glucose content, effect of good optical properties
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Embodiment 1
[0033] (1) 30.3 mg sodium borohydride (NaBH 4 ) and 51.04 mg of tellurium powder were added to the centrifuge tube, and then 3.0 mL of double distilled water was added to dissolve the solid completely; the centrifuge tube was placed in an ultrasonic machine for ultrasonic reaction, and the tube mouth was kept to vent gas, and the final white liquid was the desired The precursor NaHTe solution.
[0034] (2) Inject the newly obtained precursor NaHTe into the CdCl with thioglycolic acid (TGA) at a pH of 10.5 for nitrogen and deoxygenation 2 In aqueous solution, to which 228.34 mg of CdCl was added 2 2.5H 2 O and 138.5 μL of TGA. The mixed solution was refluxed for 6 hours and 72 hours under nitrogen protection at 100° C. to obtain the required green fluorescent quantum dot solution and red fluorescent quantum dot solution.
[0035] (3) Add 400 μL of the red fluorescent quantum dot solution obtained in step (2) to a mixed solution of 15 mL of cyclohexane, 3 mL of n-hexanol and...
Embodiment 2
[0038] (1) 60.6 mg sodium borohydride (NaBH 4 ) and 51.04 mg of tellurium powder were added to the centrifuge tube, and then 3.0 mL of double distilled water was added to dissolve the solid completely; the centrifuge tube was placed in an ultrasonic machine for ultrasonic reaction, and the tube mouth was kept to vent gas, and the final white liquid was the desired The precursor NaHTe solution.
[0039] (2) Inject the newly obtained precursor NaHTe into the CdCl with thioglycolic acid (TGA) at a pH of 11.5 for nitrogen and deoxygenation 2 in aqueous solution to which 152.23 mg of CdCl was added 2 2.5H 2 O and 115.44 μL of TGA. The mixed solution was refluxed for 6 hours and 72 hours under nitrogen protection at 110° C. to obtain the desired green fluorescent quantum dot solution and red fluorescent quantum dot solution.
[0040] (3) Add 800 μL of the red fluorescent quantum dot solution obtained in step (2) to a mixed solution of 15 mL of cyclohexane, 4 mL of n-hexanol and ...
Embodiment 3
[0043] (1) Add 45.4 mg sodium borohydride (NaBH 4 ) and 51.04 mg of tellurium powder were added to the centrifuge tube, and then 3.0 mL of double distilled water was added to dissolve the solid completely; the centrifuge tube was placed in an ultrasonic machine for ultrasonic reaction, and the tube mouth was kept to vent gas, and the final white liquid was the desired The precursor NaHTe solution.
[0044] (2) Inject the newly obtained precursor NaHTe into CdCl with thioglycolic acid (TGA) at a pH of 11.2 for nitrogen and deoxygenation 2 in aqueous solution to which 182.672 mg of CdCl was added 2 2.5H 2 O and 133 μL of TGA. The mixed solution was refluxed for 6 hours and 72 hours under nitrogen protection at 105° C. to obtain the required green fluorescent quantum dot solution and red fluorescent quantum dot solution.
[0045] (3) Add 600 μL of the red fluorescent quantum dot solution obtained in step (2) to a mixed solution of 15 mL of cyclohexane, 3.6 mL of n-hexanol and...
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