Preparation method of ethyl-alcohol-sensitive 9,10-(diphenyl)-acetenyl-anthracene-doped silicon dioxide nanoparticles
An ethynyl anthracene, ethanol-sensitive technology, applied in chemical instruments and methods, material excitation analysis, fluorescence/phosphorescence, etc., can solve problems such as affecting luminescence properties, and achieve the effects of rapid ethanol concentration and simple preparation method
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0016] Mix 1 mL of ethanol with 2 mL of water, add the mixed solvent to 5 mL of CTAB (cetyltrimethylammonium bromide) aqueous solution with a concentration of 10 mM, and then add 2 mL of 9,10-diphenylethynyl anthracene ethanol with a concentration of 50 μM solution, the final CTAB concentration was 5 mM, and the volume ratio of alcohol to water was 3:7. Stir for 15 minutes, add 50 μL of ammonia water with a concentration of 12 mol / L, and finally add 0.22 mmol of ethyl orthosilicate, and stir at 600 rpm for 6 hours. The 9,10-diphenylethynylanthracene doped silica particles were separated by centrifugation at 12000 rpm. Wash 3 times with water, put into a vacuum oven, and dry at 40°C for 12 hours. Disperse the prepared particles in water and 21% ethanol aqueous solution respectively, and the emission spectrum is as follows: figure 1 shown, from figure 1 It can be seen that when dispersed into water, the fluorescence emission peak is around 500nm, when dispersed into 21% ethan...
Embodiment 2
[0018] Mix 2 mL of ethanol with 1 mL of water, add the mixed solvent to 5 mL of 10 mM CTAB aqueous solution, then add 2 mL of 9,10-diphenylethynyl anthracene ethanol solution with a concentration of 50 μM, the final CTAB concentration is 5 mM, and the volume ratio of alcohol to water is 2: 3. Stir for 15 minutes, add 50 microliters of ammonia water with a concentration of 12 mol / L, and finally add 0.22 mmol of ethyl orthosilicate, and stir at 600 rpm for 6 hours (or 200 rpm for 12 hours). The 9,10-diphenylethynylanthracene doped silica particles were separated by centrifugation at 12000 rpm. Wash it with water three times, put it into a vacuum oven, and dry it at 40°C for 12 hours. Disperse the prepared particles in water and 8% ethanol aqueous solution respectively, and the emission spectrum is as follows: figure 2 shown, from figure 2 It can be seen that when dispersed into water, the fluorescence emission peak is around 500nm, when dispersed into 8% ethanol aqueous sol...
Embodiment 3
[0020] Add 3 mL of ethanol to 5 mL of 10 mM CTAB aqueous solution, and then add 2 mL of 50 μM 9,10-diphenylethynyl anthracene ethanol solution, the final CTAB concentration is 5 mM, and the volume ratio of alcohol to water is 1:1. Stir for 15 minutes, add 50 microliters of ammonia water with a concentration of 12 mol / L, and finally add 0.22 mmol of ethyl orthosilicate, and stir at 600 rpm for 6 hours. The 9,10-diphenylethynylanthracene doped silica particles were separated by centrifugation at 12000 rpm. Wash 3 times with water, put into a vacuum oven, and dry at 40°C for 12 hours. Disperse the prepared particles in water and 5% ethanol aqueous solution respectively, and the emission spectrum is as follows: image 3 shown, from image 3 It can be seen that when dispersed into water, the fluorescence emission peak is around 500nm, when dispersed into 5% ethanol aqueous solution, in addition to the fluorescence emission peak near 500nm, a new fluorescence emission peak is gene...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More