Fluorescent silica gel plate as well as preparation method and application thereof
A silica gel plate and fluorescence technology, applied in the field of chemical sensing, can solve problems such as interference detection accuracy, fluorescent porous powder falling off, loss of test paper detection performance, etc., and achieve the effect of improving sensitivity
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Embodiment 1
[0033] Embodiment 1: the preparation of JY-1
[0034] Under the protection of nitrogen atmosphere, 2.4 millimoles of DCBA and 1.6 millimoles of melamine were added to the reaction eggplant-shaped flask, and 10 ml of dry dimethyl sulfoxide was injected, and the temperature was raised to 180 degrees under the protection of nitrogen. sky. Cool, filter with suction, wash the solid with acetone, dichloromethane, tetrahydrofuran and methanol, extract it with tetrahydrofuran for 24 hours, and dry it in vacuum at 120 degrees for 48 hours to obtain a yellow-white solid JY1 with a BET specific surface area of 754 square meters per gram.
Embodiment 2
[0035] Embodiment 2: the preparation of JY-2
[0036] Under air atmosphere, 3.6 mmol CPBA and 2.4 mmol melamine were added to the reaction eggplant-shaped flask, 5 ml of dry N,N-dimethylformamide and 12 ml of dimethyl sulfoxide were added to the system, and the mixture Gradually raise the temperature to 180° C. by means of continuous heating, and react for 72 hours. After the reaction, the reaction system was cooled to room temperature, filtered and washed with ethanol, cyclohexane, dichloromethane, tetrahydrofuran and methanol in sequence, and then extracted with tetrahydrofuran for 24 hours. The solid product obtained after extraction was vacuum-dried in a vacuum oven at 150° C. for 48 hours to obtain a yellow-white solid JY1 with a BET specific surface area of 198 square meters per gram.
Embodiment 3
[0037] Example 3: Preparation of JY-1 fluorescence detection silica gel plate
[0038] Mix the fluorescent porous polymer JY-1 with silica gel powder and sodium carboxymethyl cellulose in water at a mass ratio of 1 / 10 / 10, then evenly scrape and coat it on a dry and clean glass plate, and let it dry naturally to obtain a fluorescent detection silicone board.
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