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Piezochromic material, preparation method and applications thereof

A piezochromic and intermediate technology applied in the chemical field to achieve high luminous efficiency

Active Publication Date: 2015-01-28
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no piezochromism with high luminous efficiency, which can respond to the external pressure of 9.21GPa, has a large change in light color and luminous intensity, a good linear relationship between pressure and peak position, and is reversible and lossless. Material

Method used

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  • Piezochromic material, preparation method and applications thereof
  • Piezochromic material, preparation method and applications thereof
  • Piezochromic material, preparation method and applications thereof

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Embodiment Construction

[0018] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] refer to figure 1 , designed the above-mentioned suppressed color-changing molecules. We have carried out a comprehensive characterization of intermediates and final products, including H-NMR, C-NMR, mass spectrometry, infrared, and elemental analysis. Proved that we got the target product.

[0020] 1: Aggregation-induced phenomenon

[0021] Depend on figure 2 You can see the ultraviolet absorption spectrum of CzCNDSB, BC3TEB in tetrahydrofuran dilute solution. The maximum absorption wavelength of CzCNDSB is at 400nm. The absorption wavelength of BC3TEB is at 352nm.

[0022] Depend on image 3 It can be seen that the materials have no fluorescence emission in tetrahydrofuran solvent. However, when water is added dropwise to its tetrahydrofuran solvent, an obvious aggregation-induced luminesce...

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PUM

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Abstract

The invention discloses a piezochromic material, a preparation method and applications thereof. The preparation method comprises the following steps: adding 3 grams of carbazole, 3.3 grams of p-bromobenzaldehyde, 3.7 grams of potassium carbonate, 0.33 gram of 18-crown-6, 0.4 gram of cuprous iodide, and 18 mL of o-dichlorobenzene into a round-bottom flask (100 mL); vacuumizing under freezing, introducing nitrogen into the round-bottom flask for three times, stirring at a temperature of 180 DEG C, carrying out reflux for 48 hours; repeatedly washing the reaction system by a hydrochloric acid solution (5%), using dichloromethane to carry out extraction for three times, using waterless magnesium sulfate to dry the product, performing rotary evaporation to remove the solvent, and finally carrying out column chromatography isolation to obtain 3.9 grams of pure product, wherein the yield is 80%.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and relates to a piezochromic material and its preparation method and application. Background technique [0002] Materials responsive to external stimuli are of great interest. Stress is one of the important stimuli. Materials that exhibit different luminous colors and light and dark intensities under different pressures are commonly known as piezochromism. In the prior art, there is no piezochromism with high luminous efficiency, which can respond to the external pressure of 9.21GPa, has a large change in light color and luminous intensity, a good linear relationship between pressure and peak position, and is reversible and lossless. Material. Contents of the invention [0003] In order to overcome the defects in the prior art, the present invention provides a piezochromic material and its preparation method and application, and studies the aggregation-inducing properties and piezochromic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02C07D209/86
Inventor 路萍高曌刘豫龙
Owner JILIN UNIV
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