A kind of preparation method of metallocene polymer nanoparticle

Abstract

A preparation method of metallocene polymer nanoparticles comprises the following steps of (1) dissolving a metallocene compound and paraformaldehyde or dimethoxymethane into a solvent A, and stirring for 1 to 30 minutes at room temperature, thus preparing a solution; (2) adding inorganic lewis acid served as a catalyst in the solution prepared in the step (1), and reacting in a normal-pressure vessel or a high-pressure reaction kettle; (3) directly filtering or centrifuging an obtained reactant after cooling a reaction system in the step (2) to room temperature, thus obtaining a solid product; (4) repeatedly washing the obtained solid product by using ethyl alcohol or deionized water, and carrying out drying or freeze-drying, thus preparing the metallocene polymer nanoparticles. According to the preparation method of the metallocene polymer nanoparticles, disclosed by the invention, the synthetic conditions are very simple and gentle, a large amount of the metallocene polymer nanoparticles can be obtained just through the steps of mixing, stirring, filtering, washing and the like, the cost is greatly reduced, reaction products are nano-scale particles, and the particle size distribution is uniform.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, in particular to a method for preparing metallocene polymer nanoparticles. Background technique [0002] Metallocenes are organometallic coordination compounds formed by linking transition metals with cyclopentadiene. Metallocenes such as ferrocene, nickelocene, cobaltocene, manganocene, titanocene dichloride and their salts such as ferrocene hexafluorophosphate, cobaltocene tetrafluoroborate, etc., due to their unique sandwich structure and Aromaticity has aroused great interest of chemists, and the research on the synthesis, performance and application of metallocene-based compounds is very active in the academic circle. Especially in recent years, the research on the synthesis, performance and application of metallocene-based polymers has made great progress. a wide range of applications. [0003] Synthetic methods of metallocene polymers emerge in endlessly. Taking ferrocene poly...

AI Technical Summary

Problems solved by technology

These polymers are realized by polycondensation, ring-opening polymerization, free radical polymerization, etc. However, no matter what method is used to obtain ferrocene-based polymers, these methods all need to go through multi-step complex reactions, and the synthesis conditions are harsh and the yield is low. , the reagents used are expensive and other defects greatly limit its application

Such as polyferrocenesilane, first prepare ferrocene lithium salt in anhydrous and oxygen-free environment, then synthesize silane-bridged ferrocene, and then perform ring-opening polymerization in a vacuum tube to obtain the product (J.Am.Chem.Soc, 1992,114,6246); Polyvinyl ferrocene is obtained by free radical polymerization of its monomers, however, the preparation method of its monomers is very complicated and the conditions are harsh, which makes it expensive

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