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Cyano-distyrene-containing photo-responsive luminescent liquid crystal elastomer material and preparation method thereof

A technology containing cyano stilbene and liquid crystal elastomer, applied in the directions of luminescent materials, chemical instruments and methods, chemical characteristics of fibers, etc., to achieve the effects of fast deformation speed, broad application prospects and large deformation degree

Pending Publication Date: 2019-10-15
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems in the practical application of azobenzene liquid crystal elastomers
The preparation of high-performance light-responsive light-emitting liquid crystal elastomer materials using cyano-stilbene as mesogen, fluorescent light-emitting group and photoresponsive group has not been reported yet.

Method used

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  • Cyano-distyrene-containing photo-responsive luminescent liquid crystal elastomer material and preparation method thereof
  • Cyano-distyrene-containing photo-responsive luminescent liquid crystal elastomer material and preparation method thereof
  • Cyano-distyrene-containing photo-responsive luminescent liquid crystal elastomer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Synthesis of photoresponsive luminescent liquid crystal elastomer LCE-1 containing cyano-stilbene

[0046] Into the polymerization tube with magneton, add the monomer (Z)-6-(4-(1-cyano-2-(4-(decyloxy)phenyl) group containing cyano-stilbene group sequentially Vinyl)phenoxy)hexylmethacrylate (1.00g, 1.81mmol), hydrogen bond crosslinker monomer 2-[6-(6-methyl-4-[1H]-pyrimidinone)-urea- Hexamethylenecarbamate]-ethyl methacrylate (0.05 g, 0.12 mmol), initiator AIBN (3.50 mg, 0.02 mmol), and 5 mL of purified THF. The polymerization tube is subjected to liquid nitrogen freezing-vacuumizing-nitrogen blowing-thawing, after 3 cycles, the tube is vacuum-sealed, and then the polymerization tube is placed in an oil bath at 75°C for a constant temperature stirring reaction for 4 hours. After the polymerization reaction is completed, open the polymerization tube , dilute the polymer solution with refined THF, and then drop the diluted polymer solution into anhydrous methanol solut...

Embodiment 2

[0050] 1. Synthesis of photoresponsive luminescent liquid crystal elastomer LCE-2 containing cyano-stilbene

[0051] Into the polymerization tube with magneton, add the monomer (Z)-8-(4-(1-cyano-2-(4-(decyloxy)phenyl) containing cyano-stilbene group in sequence Vinyl)phenoxy)octyl methacrylate (1.00g, 1.72mmol), hydrogen bond crosslinker monomer 2-[6-(6-methyl-4-[1H]-pyrimidinone)-urea -Hexamethylenecarbamate]-ethyl methacrylate (0.08 g, 0.18 mmol), AIBN (3.54 mg, 0.02 mmol) and 5 ml of refined THF. The polymerization tube is subjected to liquid nitrogen freezing-vacuumizing-nitrogen blowing-thawing, after 3 cycles, the tube is vacuum-sealed, and then the polymerization tube is placed in an oil bath at 75°C for a constant temperature stirring reaction for 4 hours. After the polymerization reaction is completed, open the polymerization tube , dilute the polymer solution with refined THF, and then drop the diluted polymer solution into anhydrous methanol solution, stirring vigo...

Embodiment 3

[0055] 1. Synthesis of photoresponsive luminescent liquid crystal elastomer LCE-3 containing cyano-stilbene

[0056] Into the polymerization tube with a magneton, add the monomer (Z)-6-(4-(1-cyano-2-(4-cyanophenyl)vinyl) containing cyano-stilbene group in sequence Phenoxy)hexyl methacrylate (1.00g, 2.31mmol), hydrogen bond crosslinker monomer 2-[6-(6-methyl-4-[1H]-pyrimidinone)-urea-hexamethylene Base carbamate] - ethyl methacrylate (0.11g, 0.25mmol), initiator AIBN (4.60mg, 0.03mmol) and 5ml refined THF. The polymerization tube is subjected to liquid nitrogen freezing-vacuumizing-nitrogen blowing-thawing, and after 3 cycles, the tube is vacuum sealed, and then the polymerization tube is placed in an oil bath at 80°C for a constant temperature stirring reaction for 4 hours. After the polymerization reaction is completed, open the polymerization tube , dilute the polymer solution with refined THF, and then drop the diluted polymer solution into anhydrous methanol solution, sti...

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Abstract

The invention discloses a cyano-distyrene-containing photo-responsive luminescent liquid crystal elastomer material and a preparation method thereof. The liquid crystal elastomer material disclosed bythe invention is prepared by performing copolymerization on a cyano-distyrene group-containing monomer and a hydrogen bond crosslinking agent monomer, or performing copolymerization on the cyano-distyrene group-containing monomer, the hydrogen bond crosslinking agent monomer and a monomer containing a non-liquid crystal structural unit. The liquid crystal elastomer material disclosed by the invention shows a typical aggregation-induced fluorescence enhancement effect, can emit very strong fluorescent light in an aggregation state; in addition, the orientated single domain liquid crystal elastomer fibre also has photo-response; under the irradiation of ultraviolet light, the single domain liquid crystal elastomer fibre can deform, has the advantages that the deformation degree is high, thedeformation speed is high, the deformation can be stored for a long time and the like, and shows a broad application prospect in the fields of intelligent actuators, biomaterials, optical materials and the like.

Description

technical field [0001] The invention relates to intelligent materials, in particular to a light-responsive luminescent liquid crystal elastomer material containing cyano-stilbene and a preparation method thereof. Background technique [0002] Liquid crystal elastomer refers to a polymer material that can exhibit elasticity in a liquid crystal state or an isotropic state after moderate chemical or physical crosslinking of liquid crystal polymers. It not only exhibits the viscoelasticity of elastomers, but also has liquid crystal order and fluidity. Light-responsive liquid crystal elastomers are a class of liquid crystal elastomers that respond to light stimuli. Light-responsive liquid crystal elastomers have the advantages of no contact, no pollution, and adjustable performance parameters. Therefore, light-responsive liquid crystal elastomers can stand out from many stimulus-responsive liquid crystal elastomers and become a hot spot in the research of liquid crystal elastome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/36D01F6/36C09K11/06
CPCC08F220/36D01F6/36C09K11/06C09K2211/1466C09K2211/1425
Inventor 张海良贺利芳袁勇杰廖军秋
Owner XIANGTAN UNIV
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