Preparation method and application of triple response polymer self assembly based on nitrobenzene
A technology of polymer and nitrobenzene, which is applied in the field of preparation of multi-responsive polymer self-assembly, which can solve the problem that the precise regulation of the behavior of polymer substances does not achieve the desired effect.
Inactive Publication Date: 2013-07-17
UNIV OF SCI & TECH BEIJING
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[0004] However, the precise regulation of the behavior of polymer substances has not yet achieved the desired effect.
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The invention provides a preparation method and application of a triple response polymer self assembly based on nitrobenzene. The preparation method comprises the following concrete steps: subjecting 2-nitrobenzyl alcohol and methacryloyl chloride to acylating chlorination so as to obtain 2-nitrobenzyl methacrylate; and then subjecting the polymerizable monomer dimethylaminoethyl methacrylate and 2-nitrobenzyl methacrylate to copolymerization so as to synthesize a light, temperature and pH responsive amphiphilic polymer. The polymer spontaneously forms the self assembly with a core-shell structure in water. The self assembly is stable at room temperature and is capable of loading hydrophobic micro-molecules (e.g., Nile red); and through ultraviolet irradiation and adjustment of a pH value and temperature, the morphology of a micelle obviously changes, so the micro-molecules loaded in the micelle self assembly are released. The polymer micelle prepared in the invention has light responsiveness, temperature responsiveness and pH responsiveness and has wide application prospects in the field of controlled release.
Description
technical field [0001] The invention belongs to the technical field of polymer materials, and relates to the preparation and application of a multi-responsive polymer self-assembly that responds to light, acid and temperature. [0002] Background technique [0003] Nature is full of various substances that respond to external stimuli, such as sea cucumbers on the seabed, flytraps in plants, including human skin, proteins and nucleic acids. Researchers have developed a large number of substances to imitate the behavior of substances in nature, such as polymers with temperature and pH responses, in order to better regulate the behavior of substances. [0004] However, the precise regulation of the behavior of polymer substances has not yet achieved the desired effect. At the same time, multi-responsive polymer materials, that is, multi-responsive polymer materials that combine light response, temperature response and pH response, are still under development. [0005...
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Login to View More IPC IPC(8): C08F220/36C08F220/34C08J3/07A61K47/32
Inventor 王国杰吴昊董杰杨槐
Owner UNIV OF SCI & TECH BEIJING