Preparation method of pyrene functionalized sensing film and its application in nitryl arene detection
A sensing film and functionalization technology, which is applied in the direction of chemical reaction of materials for analysis, chemiluminescence/bioluminescence, etc., to achieve the effects of improving sensing performance, mild reaction conditions, and easy operation
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Embodiment 1
[0065] To prepare a low density (1000 2 Containing less than 12 pyrene sensing molecules) single-sided fluorescent sensing film as an example, the preparation method steps are as follows:
[0066] 1. Cutting the substrate
[0067] Cut the glass plate into 0.9×2.5cm 2 The size of the rectangular glass sheet.
[0068] 2. Prepare lotion
[0069] Mix 30% hydrogen peroxide and 98% sulfuric acid in a volume ratio of 7:3 to prepare a lotion.
[0070] 3. Preparation of activated substrate
[0071] Wash the glass slices with water and ethanol first, blow dry and put them in the lotion, heat at 80~100℃ for 1~2 hours, cool naturally, wash the glass slices with pure double distilled water to wash away the remaining lotion on the surface, use Blow dry with a hair dryer to make an activated substrate.
[0072] 4. Preparation of silanized substrate
[0073] Using the capillary action of water, one side of the activated substrate was glued and sealed with a glass sheet, and the activated substra...
Embodiment 2
[0079] In order to prepare the medium density (1000 2 Containing 17-25 pyrene sensing molecules) single-sided fluorescent sensing film as an example, the preparation method steps are as follows:
[0080] In the process step 5 of preparing the chloroform solution of propylene diaminopyrene sulfonyl derivative in this embodiment, pyrene sulfonyl chloride is dissolved in the chloroform solution to prepare a 0.01 mol / L pyrene sulfonyl chloride solution in chloroform , Pour this solution into a constant pressure funnel, and then take the propylene diamine solution with a molar ratio of 8 to the pyrene sulfonyl chloride and dissolve it in the chloroform solution to prepare a 0.08 mol / L propylene diamine solution in chloroform, And put the solution into a three-necked flask. Under the condition of stirring at 0℃, pass in N at a rate of 0.6~0.8ml / s 2, The chloroform solution of pyrene sulfonyl chloride was added dropwise to the chloroform solution of propylene diamine in the three-necked...
Embodiment 3
[0083] In order to prepare high density (1000 2 Containing 40-50 pyrene sensing molecules) single-sided fluorescent sensing film as an example, the preparation method steps are as follows:
[0084] In the process step 5 of preparing the chloroform solution of propylene diaminopyrene sulfonyl derivative in this embodiment, pyrene sulfonyl chloride is dissolved in the chloroform solution to prepare a 0.01 mol / L pyrene sulfonyl chloride solution in chloroform , Pour this solution into a constant pressure funnel, and then take the propylene diamine solution with a molar ratio of 10 to the pyrene sulfonyl chloride and dissolve it in the chloroform solution to prepare a 0.10 mol / L propylene diamine solution in chloroform, And put the solution into a three-necked flask. Under the condition of stirring at 0℃, pass in N at a rate of 0.6~0.8ml / s 2 , The chloroform solution of pyrene sulfonyl chloride was added dropwise to the chloroform solution of propylene diamine in the three-necked fla...
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