Preparation method of metal coordination supermolecular nanogel
A metal coordination, nanogel technology, applied in the supramolecular field, can solve the problems of poor targeting of anti-tumor drugs, complex composition of natural porphyrin compounds, and high toxicity and side effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0014] The invention provides a kind of preparation method of metal coordination supramolecular nanogel, comprising the following steps:
[0015] (1) Grafting histidine onto natural polysaccharides through EDC / DMAP condensation reaction to prepare histidine-modified natural polysaccharides;
[0016] (2) Preparation of metal-coordinated supramolecular nanogels through metal-coordination between metalloporphyrins and histidine.
[0017] In the present invention, the hydrophilic polymer is natural polysaccharide, preferably dextran, chitosan, hyaluronic acid. More preferred is dextran.
[0018] The number average molecular weight of the hydrophilic polymer is preferably 500-50000, more preferably 6000-40000, most preferably 6000-10000.
[0019] In the present invention, the said histidine is a type of small molecular monomer containing an imidazole ring, preferably histidine, BOC-protected histidine.
[0020] In the present invention, the metal is a metal that can coordinate w...
Embodiment example 1
[0026] Implementation Case 1 Preparation of Tetraphenylporphyrin
[0027] Measure 7.14mL (71.4mmol) of p-benzaldehyde into a three-necked flask, add 300mL of propionic acid as a solvent, and slowly drop 5mL (71.4mmol) of pyrrole into the reaction flask during the process of reflux, and continue to reflux after the addition After 30 minutes, the reaction was stopped. After cooling, filter with a Buchner funnel. The filter cake was washed with methanol until the filtrate was colorless, then washed with hot water until the filtrate was neutral, and then dried in a vacuum oven to obtain a crude product. Pure tetraphenylporphyrin was obtained by recrystallization three times with dichloromethane and ethanol. The obtained tetraphenylporphyrin was analyzed by nuclear magnetic resonance, infrared spectrum and ultraviolet spectrum, which proved that the tetraphenylporphyrin was successfully synthesized.
Embodiment example 2
[0028] Implementation Case 2 Preparation of Zinc Tetraphenylporphyrin
[0029] Take by weighing 1g (1.63mmol) tetraphenylporphyrin and put it into a three-necked flask, add 60mL of chloroform as a solvent, and in the process of reflux, add 1.43g (6.52mmol) zinc acetate dihydrate, after reflux reaction for 1h, After the reaction was stopped, after cooling to room temperature, the reaction solution was washed three times with water, and after washing, the organic phase was spin-dried to remove the solvent to obtain zinc tetraphenylporphyrin as a solid. The obtained tetraphenylporphyrin was analyzed by infrared spectrum and ultraviolet spectrum, which proved that tetraphenylporphyrin was successfully synthesized.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com