Polymer ratio fluorescence sensor with sulfur dioxide recognition function as well as preparation method and application of polymer ratio fluorescence sensor
A sulfur dioxide, ratio fluorescence technology, applied in chemical instruments and methods, fluorescence/phosphorescence, instruments, etc., can solve the problems of photobleaching damage of spiropyran molecules, increase biological toxicity, object damage, etc., and achieve convenient and cost-effective post-processing. The effect of low investment and simple synthesis route
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Embodiment 1
[0035] Example 1: Preparation of a polymer ratio fluorescence sensor with sulfur dioxide recognition function, the specific steps are as follows:
[0036] (1) Dissolve 4,5-dimethyl-4-azaadamantane iodonium salt (1 mmol) and 5-nitrosalicylaldehyde (1.2 mmol) prepared according to the prior art in 20 mL of absolute ethanol, add Piperidine (1.19 mmol) on N 2 Under the conditions of protection and dark, reflux for 12h, after the reaction, 85-95% of the solvent is removed by rotary evaporation, the product is purified by column separation, and dried in vacuum to obtain the target molecule.
[0037] (2) Take the target molecule synthesized in step (1) and prepare it into 1 mg / mL tetrahydrofuran (THF) solution A, take poly[9,9-dihexylfluorenyl-2,7-diyl] prepared according to the prior art Be prepared into the tetrahydrofuran (THF) solution B of 1 μg / mL, get the polyethylene oxide-co-polystyrene prepared according to the prior art and prepare the tetrahydrofuran (THF) solution C of 1...
Embodiment 2
[0038] Embodiment 2: the preparation of a polymer ratio fluorescence sensor with sulfur dioxide recognition function, the specific steps are as follows:
[0039] (1) 4,5-dimethyl-4-azaadamantane iodonium salt (0.5mmol) and 5-nitrosalicylaldehyde (0.6mmol) prepared according to the prior art were dissolved in 20mL of absolute ethanol, Piperidine (0.595 mmol) was added and placed under N 2 Under the conditions of protection and dark, reflux for 12h, after the reaction, 85-95% of the solvent is removed by rotary evaporation, the product is purified by column separation, and dried in vacuum to obtain the target molecule.
[0040] (2) Take the target molecule synthesized in step (1) and prepare it into 0.5 mg / mL tetrahydrofuran (THF) solution A, take poly[9,9-dihexylfluorenyl-2,7-diyl prepared according to the prior art ] be mixed with the tetrahydrofuran (THF) solution B of 0.5 μg / mL, get the polyethylene oxide-co-polystyrene prepared according to the prior art and be mixed with ...
Embodiment 3
[0041] Embodiment 3: the preparation of a polymer ratio fluorescence sensor with sulfur dioxide recognition function, the specific steps are as follows:
[0042] (1) 4,5-dimethyl-4-azaadamantane iodonium salt (1.5mmol) and 5-nitrosalicylaldehyde (1.8mmol) prepared according to the prior art were dissolved in 20mL of absolute ethanol, Piperidine (1.785 mmol) was added and placed under N 2 Under the conditions of protection and dark, reflux for 12h, after the reaction, 85-95% of the solvent is removed by rotary evaporation, the product is purified by column separation, and dried in vacuum to obtain the target molecule.
[0043] (2) Take the target molecule synthesized in step (1) and prepare it into 1.5 mg / mL tetrahydrofuran (THF) solution A, take poly[9,9-dihexylfluorenyl-2,7-diyl prepared according to the prior art ] Be mixed with the tetrahydrofuran (THF) solution B of 1.5 μg / mL, get the polyethylene oxide-co-polystyrene prepared according to the prior art and be mixed with ...
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