Liquid crystal material based on pillararene and preparation method thereof

A technology of liquid crystal materials and pillar aromatic hydrocarbons, which is applied in the field of metal supramolecular polymer networks to achieve the effects of low cost and simple method

Active Publication Date: 2020-12-08
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, supramolecular liquid crystal polymers based on

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  • Liquid crystal material based on pillararene and preparation method thereof
  • Liquid crystal material based on pillararene and preparation method thereof
  • Liquid crystal material based on pillararene and preparation method thereof

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described in detail below.

[0030] 1. A liquid crystal material based on pillar arene. Firstly, a pillar [5] arene-cholesterol derivative 1 bridged by a rigid Schiff base spacer was designed and synthesized by aldehyde-amine condensation. Then, [3] pseudorotaxanes were obtained through the host-guest interaction between the pillar[5]arene-cholesterol derivative 1 and the guest 2 containing dinitrile groups. Since the Schiff base group can interact with Cu 2+ Coordinated, quasi[3]rotaxanes are further cross-linked to give a three-dimensional supramolecular polymer network with liquid crystal behavior.

[0031] Wherein: the pillar [5] arene-cholesterol derivative 1 structural formula of Schiff base spacer bridge is: ;

[0032] The structural formula of guest 2(G) containing a dinitrile group is:

[0033] ;

[0034] Moreover, the Schiff base spacer-bridged pillar[5]arene-cholesterol derivative 1, the guest 2 co...

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Abstract

The invention belongs to the field of organic synthesis, and discloses a liquid crystal material based on pillararene and a preparation method thereof. A pillar [5] arene-cholesterol derivative 1 bridged by a rigid Schiff base spacer is designed and synthesized by aldehyde amine condensation. Then, [3]-pseudorotaxane is obtained through host-guest interaction between the pillar [5] arene-cholesterol derivative 1 and a guest 2 containing a dinitrile group; as the Schiff base group can be coordinated with Cu < 2 + >, the [3]-pseudorotaxane can be further cross-linked to obtain a three-dimensional supramolecular polymer network. The supramolecular network polymer is simple and convenient in preparation method and low in cost, and has a liquid crystal behavior, so that a new method is providedfor constructing a liquid crystal material based on pillararene.

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...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K19/40
CPCC08G83/007C08G83/008C09K19/40
Inventor 王丕梁必聪
Owner TAIYUAN UNIV OF TECH
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