Diamine monomer containing carbazole structure and having high planarity, synthetic method and application thereof

Abstract

The invention discloses a diamine monomer containing a carbazole structure and having a high planarity, a synthetic method and an application thereof. In the method, the diamine is directly prepared from dihalogenated carbazole through ammoniation by liquid ammonia; or is directly prepared through a Suzuki reaction; or is directly prepared by performing cyanidation, hydrolysis and acylating chlorination to the dihalogenated carbazole to synthesize diacyl chlorocarbazole and then performing a reaction to the diacyl chlorocarbazole with a hydroxyl group or an amino group to form an ester bond or an amido bond; or is prepared by performing a Ullmann coupling reaction with the halogen atoms in the dihalogenated carbazole to form an ether bond, secondary amine or the like and finally reducing the dinitro group. The diamine synthetic process is simple, is simple in purification and is suitable for industrial production. A minimum energy state 3D molecular structure of the diamine monomer is high in planarity so that the diamine monomer can be used for preparing a high barrier polymer which is strong in interaction force among molecular chains and is small in free volume. The diamine monomer can be used for preparing high-performance and functionalized polyamides, polyimides, polyamideimides, polyesterimides and such polymers.

Description

technical field

[0001] The invention relates to the field of material science, in particular to a highly planar diamine monomer containing a carbazole structure and a synthesis method thereof. This monomer can be used to synthesize polymers such as polyamide, polyimide, polyamideimide and polyesterimide with high barrier and functionalization. Background technique

[0002] The most promising new generation of information display technology at present - organic electroluminescent device (OLED), which has all solid state, active light emission, high brightness, high contrast, ultra-thin, low power consumption, no viewing angle limit, fast response speed , wide operating temperature range and flexible display and many other incomparable advantages are considered to be the focus of the development of the world's information industry in the next 30 years. The key to OLED industrialization lies in "expanding size, reducing cost, increasing lifespan, and improving color". Only b...

Images