Application of a Metal Complex Fluorescent Probe in Detecting Hydrogen Sulfide in Gas
A metal complex and fluorescent probe technology, applied in the field of analytical chemistry, to achieve the effects of good selectivity, good sensitivity analysis, and good photostability
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Embodiment 1
[0028] A method for preparing a metal complex fluorescent probe, the method steps are as follows:
[0029] S1: Add 0.1g dansyl chloride and 80μL triethylamine into a round bottom flask containing 8mL of dichloromethane, then add 0.0043g chloroethylamine hydrochloride, under the protection of nitrogen, stir at room temperature for 0.5h , remove the methylene chloride solvent with a rotary evaporator to obtain a yellow oil;
[0030] S2: Then the obtained substance was separated in petroleum ether with silica gel column: ethyl acetate=4:1, R f =0.42 under the conditions of separation and purification to obtain the product Ds-1;
[0031] S3: Weigh 0.06g of the Ds-1 product and place it in 2mL of DMF to dissolve, then add 0.03g of furan-2-ylmethyl-pyridin-2-ylmethyl-amine and 0.02g of anhydrous potassium carbonate, and stir at room temperature for 22h , adding 12mL of ice water to the reaction mixture, a large amount of precipitate was formed, and the precipitate solid was obtain...
Embodiment 2
[0034] S1: Add 0.1500g of dansyl chloride and 117μL of triethylamine into a round bottom flask containing 10mL of dichloromethane, then add 0.0065g of chloroethylamine hydrochloride, under the protection of nitrogen, stir at room temperature for 1h, The dichloromethane solvent was removed with a rotary evaporator to obtain a yellow oil;
[0035] S2: Then the obtained substance was separated in petroleum ether with silica gel column: ethyl acetate=4:1, R f =0.42 under the conditions of separation and purification to obtain the product Ds-1;
[0036] S3: Weigh 0.0625g of the Ds-1 product and place it in 3mL of DMF to dissolve, then add 0.0376g of furan-2-ylmethyl-pyridin-2-ylmethyl-amine and 0.0276g of anhydrous potassium carbonate, and stir at room temperature for 24h , adding 15mL of ice water to the reaction mixture, a large amount of precipitate was formed, and the precipitate solid was obtained by filtration, and then the resulting substance was separated and purified with...
Embodiment 3
[0039] S1: Add 0.2g of dansyl chloride and 160μL of triethylamine into a round bottom flask containing 12mL of dichloromethane, then add 0.0086g of chloroethylamine hydrochloride, and stir at room temperature for 1.5h under the protection of nitrogen , remove the methylene chloride solvent with a rotary evaporator to obtain a yellow oil;
[0040] S2: Then the obtained substance was separated in petroleum ether with silica gel column: ethyl acetate=4:1, R f =0.42 under the conditions of separation and purification to obtain the product Ds-1;
[0041] S3: Weigh 0.07g of the Ds-1 product and place it in 4mL of DMF to dissolve, then add 0.04g of furan-2-ylmethyl-pyridin-2-ylmethyl-amine and 0.04g of anhydrous potassium carbonate, and stir at room temperature for 26h 18mL of ice water was added to the reaction mixture, a large amount of precipitates were formed, and the precipitate solid was obtained by filtration, and then the resulting substance was separated and purified with a...
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