A bonded fluorescent rare earth liquid crystal ionomer and its preparation method

Abstract

The invention discloses a bonded fluorescent rare earth liquid crystal ionomer and a preparation method thereof, and belongs to the technical field of polymer materials. The bonded fluorescent rare earth liquid crystal ionomer is prepared by graft copolymerization of a liquid crystal monomer 4-cholesterol allyloxy benzoate M1, acrylic acid M2, a rare earth complex M3 and polymethylhydrosiloxane PMHS. Compared with liquid crystal polymers, strong fluorescence appears at specific wavelength. Compared with common rare earth complexes, the prepared rare earth liquid crystal ionomer has liquid crystallinity and wide liquid crystal range, and has the liquid crystal range reaching 199 DEG C. In addition, through thermogravimetric analysis, the prepared rare earth liquid crystal ionomer has good heat stability, and can have wide application prospect in optics, machinery, electronics, display and other fields. The preparation method is simple, easy to operate, high in yield and prone to industrialized production.

Description

[0001] technology field` [0002] The invention belongs to the technical field of polymer materials, and in particular relates to a bonded fluorescent rare earth liquid crystal ionomer and a preparation method thereof. Background technique [0003] Rare earth liquid crystal materials have the characteristics of magnetism, high luminous intensity, high color purity, and high electronic polarizability, and can be applied to organic magnets, nonlinear optical materials, catalysts, etc., and are important luminescent liquid crystal materials. Rare earth liquid crystals can be divided into doped and bonded types. Bonded rare earth liquid crystals can overcome defects such as poor compatibility between doped rare earth liquid crystals and matrix materials, and easy phase separation, which has become one of the hot spots in the research of rare earth liquid crystals. However, bonded small molecule rare earth liquid crystals have disadvantages such as high phase transition temperature...

AI Technical Summary

Problems solved by technology

However, bonded small-molecule rare-earth liquid crystals have shortcomings such as high phase transition temperature, narrow liquid crystal interval, poor processability and thermal stability, which are the main reasons hindering their application.

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