A kind of liquid crystal material based on pillar arene and preparation method thereof

Abstract

The invention belongs to the field of organic synthesis, and discloses a pillararene-based liquid crystal material and a preparation method thereof. A pillar[5]arene‑cholesterol derivative 1 bridged with a rigid Schiff base spacer was designed and synthesized via aldolamine condensation. Then, [3] pseudorotaxanes were obtained through the host-guest interaction between the pillar [5] arene-cholesterol derivative 1 and the guest 2 containing a dinitrile group. Since the Schiff base group can interact with Cu 2+ Coordinated, quasi[3]rotaxanes can be further cross-linked to obtain a three-dimensional supramolecular polymer network. The preparation method of the supramolecular network polymer is simple, the cost is low, and it has liquid crystal behavior, which provides a new method for the construction of pillar arene-based liquid crystal materials.

Description

technical field

[0001] The invention belongs to the technical field of organic synthesis, and specifically relates to a liquid crystal material based on pillararene and a preparation method thereof, based on host-guest interaction and metal coordination of a macrocyclic compound pillararene containing cholesterol groups to form a metallosupramolecular polymer network , the polymer network has liquid crystal properties. Background technique

[0002] Cholesterol was discovered in gallstones in the 18th century. In 1816, the chemist Bencher named this lipid-like substance "cholesterol", which was the first steroid compound discovered by humans. Due to the easy derivatization of cholesterol molecules, the research on the excellent properties of cholesterol-based materials has attracted more and more attention at home and abroad. First of all, the van der Waals force between cholesterol can provide stability for the accumulation of molecules, and through its helical accumulatio...

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