Compound film enhanced by inclusion complex of ring molecule and polymer and preparation method thereof
A technology of cyclic molecules and polymers, applied in the field of layer-by-layer self-assembled supramolecular multilayer films, can solve the problems of interface incompatibility, weak interface adhesion, damage to the mechanical properties of bionic composite films, etc., and achieve strong specificity , stable structure, and easy phase separation of the substrate medium
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Problems solved by technology
 Example 1:
 The carboxyl-terminated polyethylene glycol (molecular weight 10,000) and chitosan (molecular weight 800,000) were dissolved in water to form 9% and 0.1% solutions, respectively, and α-cyclodextrin was dissolved in water to form 2% solutions. Firstly, immerse the clean basement mica flakes in the chitosan solution at room temperature, take out the mica flakes after 20 minutes, and wash twice in deionized water to remove excess chitosan molecules. At this time, a layer of nearly monomolecular molecules will be adsorbed on the basement mica flakes. Layer of chitosan molecules; then immerse the mica flakes in the carboxypolyethylene glycol solution, take out the mica flakes after 20 minutes and wash twice in deionized water to remove excess polyethylene glycol molecules. Alcohol molecules will be adsorbed on the chitosan to form a polyethylene glycol layer; then the mica flakes will be immersed in an aqueous solution of α-cyclodextrin, and washed twice in d...
 Example 2:
 Polypropylene glycol grafted histone (molecular weight 300,000) was dissolved in water to make a 0.5% solution, and β-cyclodextrin was dissolved in water to make a 1% solution. Firstly, immerse the clean cellulose acetate basement membrane in polypropylene glycol-histone solution at room temperature. Take out the basement membrane after 20 minutes and wash twice in deionized water to remove excess polypropylene glycol-histone. At this time, the basement membrane will be adsorbed. A layer of polypropylene glycol-histone molecules; then the basement membrane is immersed in β-cyclodextrin aqueous solution, and washed twice in deionized water after 2 hours. Because β-cyclodextrin will interact with polypropylene glycol-histone molecules on the The polypropylene glycol graft chain produces selective inclusions, so the substrate will be discontinuously covered with a layer of inclusions to form a layer of inclusions, and an assembly cycle ends. When repeating ...
 Example 3:
 Polyethylene glycol-polyvinyl imide block copolymer (molecular weight 20,000) and polyvinyl pyridine (molecular weight 5,000) were dissolved in dimethyl sulfoxide to form a 10% solution, α-cyclodextrin Dissolve in water to make a 3% solution. First immerse the clean silicon wafer in the polyvinylpyridine solution at 50℃, take out the silicon wafer after 20 minutes, and wash it in dimethyl sulfoxide twice to remove excess polyvinylpyridine. At this time, the silicon wafer will adsorb one Layer polyethylene glycol-polyvinylimide molecules; then immerse the silicon wafer in the polyethylene glycol-polyvinylimide solution, take out the silicon wafer after 20 minutes, and wash twice in dimethyl sulfoxide Remove excess polyethylene glycol-polyvinylimide molecules. Due to the hydrogen bond, a layer of polyethylene glycol-polyvinylimide molecules will be adsorbed on the polyvinylpyridine; then the silicon wafer is immersed in α -In the cyclodextrin aqueous solut...
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