Preparation of Nanohybrids for Ratiometric Fluorescence and Ratiometric Electrochemical Sensing
A nano-hybrid, ratiometric fluorescence technology, applied in biochemical equipment and methods, nanotechnology for materials and surface science, chemical instruments and methods, etc.
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Embodiment 1
[0027] The present invention relates to a method for preparing nano-hybrids that can be used as both ratiometric fluorescence and ratiometric electrochemical sensing. The preparation process and detection principle are as follows: Figure 1~3 As shown, the specific preparation steps are as follows:
[0028] Dissolve Fc or MB in absolute ethanol, add APTS and stir evenly, and store in a dark place. Add ammonia water and ethanol and stir evenly, add TEOS and stir to react, then add TEOS to continue the reaction. The product was centrifuged, washed and dried to obtain SiO encapsulated in Fc or MB 2 Nanosphere ~ 80nm. The product was dispersed in a mixture of APTS and acetic acid, stirred and reacted at room temperature, and purified by a similar method to obtain surface-NH 2 FeSiO 2 nanospheres.
[0029] Disperse citric acid and thiourea in dimethylformamide, transfer to a miniature autoclave lined with polytetrafluoroethylene, stir and react at 160°C for 6 hours, cool the p...
Embodiment 2
[0035] Dissolve Fc or MB in absolute ethanol, add APTS and stir evenly, and store in a dark place. Add ammonia water and ethanol and stir evenly, add TEOS and stir to react, then add TEOS to continue the reaction. The product was centrifuged, washed and dried to obtain SiO encapsulated in Fc or MB 2 Nanosphere ~ 100nm. The product was dispersed in a mixture of APTS and acetic acid, stirred and reacted at room temperature, and purified by a similar method to obtain surface-NH 2 FeSiO 2 nanospheres.
[0036] Disperse citric acid and thiourea in dimethylformamide, transfer to a miniature autoclave lined with polytetrafluoroethylene, stir and react at 180°C for 5h, cool the product to room temperature, and wash with centrifugation, ethanol and water And drying treatment to prepare the surface-COOH CDs.
[0037] Disperse mercaptoundecanoic acid in NaOH solution, add HAuCl under rapid stirring 4 Aqueous solution, adjust the mixed solution with NaOH to clarify, add NaBH dropwis...
Embodiment 3
[0042] Dissolve Fc or MB in absolute ethanol, add APTS and stir evenly, and store in a dark place. Add ammonia water and ethanol and stir evenly, add TEOS and stir to react, then add TEOS to continue the reaction. The product was centrifuged, washed and dried to obtain SiO encapsulated in Fc or MB 2 Nanosphere ~ 120nm. The product was dispersed in a mixture of APTS and acetic acid, stirred and reacted at room temperature, and purified by a similar method to obtain surface-NH 2 FeSiO 2 nanospheres.
[0043] Disperse citric acid and thiourea in dimethylformamide, transfer to a miniature autoclave lined with polytetrafluoroethylene, stir and react at 200°C for 3 hours, cool the product to room temperature, and wash with centrifugation, ethanol and water And drying treatment to prepare the surface-COOH CDs.
[0044] Disperse mercaptoundecanoic acid in NaOH solution, add HAuCl under rapid stirring 4 Aqueous solution, adjust the mixed solution with NaOH to clarify, add NaBH dr...
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Abstract
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