Preparation method and application of ordered porous film for detecting glucose
A porous membrane and glucose technology, which is applied in the field of preparation of ordered porous membranes, can solve the problems of no preparation method and practical application, cumbersome steps of enzyme-free glucose detection technology, etc., and achieve improved detection sensitivity, simple preparation method, and high specific surface area Effect
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Synthetic example 1
[0021] Add 28 mL of styrene, 136 μL of 1-phenylethyl bromide, 209 μL of pentamethyldiethylenetriamine and 143 mg of cuprous bromide to the polymerization bottle successively under the protection of nitrogen, freeze? Hour. Cool to room temperature, dissolve the polymer with a small amount of tetrahydrofuran, then pour the polymer solution into a large amount of methanol to precipitate, filter with suction, and dry in vacuum to obtain a polystyrene macroinitiator with a number average molecular weight of 18,600.
[0022] Add 3g of polystyrene macroinitiator, 15mL of dimethylformamide, 700μL of methyl acrylate, 40μL of pentamethyldiethylenetriamine and 28mg of cuprous bromide into the polymerization bottle, freeze? vacuum? melt Three times, react at 80°C for 24 hours. After the reaction, the product was precipitated with methanol, washed several times, and dried in vacuum to obtain a styrene / methyl acrylate block copolymer. Add 2.5g of styrene / methyl acrylate block copolymer an...
Synthetic example 2
[0024] Add 20mL of styrene, 109mg of azobisisobutyronitrile and 810mg of benzyl dithiobenzoate to the polymerization bottle sequentially under the protection of nitrogen, freeze, vacuumize, and melt three times, and react at 70°C for 10 hours. Cool to room temperature, dissolve the polymer with a small amount of tetrahydrofuran, then pour the polymer solution into a large amount of methanol to precipitate, filter with suction, and dry in vacuum to obtain a polystyrene macromolecular chain transfer agent with a number average molecular weight of 8,000.
[0025] Add 3g of polystyrene macromolecular chain transfer agent, 15mL of dimethylacetamide, 16mg of azobisisobutyronitrile and 1mL of acrylic acid into a polymerization bottle, freeze, vacuumize, and melt three times, and react at 80°C for 24 hours. After the reaction, the product was precipitated with methanol, washed several times, and dried in vacuum to obtain a styrene / acrylic acid block copolymer with a number average mole...
Embodiment 1
[0027] Dissolve 1 g of styrene-acrylic acid block copolymer with a molecular weight of 20,000, a hydrolysis degree of 95%, and acrylic acid block mass percentage of 7% in 19 g of tetrahydrofuran to make a 5% solution by weight, and then add 0.14 g of meta-amino Phenylboronic acid and 0.42g N,N-dicyclohexylcarbodiimide were stirred at room temperature for 12 hours, the reaction solution gradually became turbid from clear, after centrifugation, the supernatant was taken, precipitated and washed with methanol to obtain a film-forming polymer . Dissolve the film-forming polymer in carbon disulfide to make a 5mg / mL solution, and apply the solution on a quartz gold plate, and then place it in a room temperature environment with a relative humidity of 82% for 2 minutes to obtain a phenylboronic acid component. Ordered porous membrane. SEM photo see figure 1 .
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