Hydrogel controlled by double switch of hydrogen bond and π-π stacking and its preparation and application
A hydrogel, π stacking technology, applied in the field of drug controlled release system research, can solve the problem of inability to match drug metabolism
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[0023] 1. Preparation of functional monomers
[0024] (1) p-nitrophenol methacrylate
[0025] Dissolve methacryloyl chloride, p-nitrophenol and triethanolamine (1:1:1 molar ratio) in chloroform, stir and react for 5-60 hours at a low temperature of -10-5°C (such as an ice-water bath), and wash with saturated NH 4 Cl ends the reaction, and the reaction product is recrystallized from ethanol to obtain white crystals. The resulting product is dried below 100°C for future use.
[0026] (2) p-nitrophenol acrylate
[0027] Dissolve acryloyl chloride, p-nitrophenol and triethanolamine (1:1:1 molar ratio) in chloroform, stir and react at a low temperature of -10 to 5°C (such as an ice-water bath) for 5 to 60 hours, and wash with saturated NH 4 Cl ends the reaction, and the reaction product is recrystallized from ethanol to obtain white crystals. The resulting product is dried below 100°C for future use.
[0028] The proton magnetic resonance spectrum of the product that the synth...
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