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Application of viologen coordination compound crystal as multifunctional color-changing material

A technology of coordination compounds and color-changing materials, applied in the application field of viologen coordination compound crystals as multi-functional color-changing materials, can solve the bottleneck period, the development and application limitations of such materials, isomerization and other problems, and achieve the speed of color change. quick effect

Inactive Publication Date: 2021-03-12
南京米兰达视光科学研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual research, such materials often only have a single response characteristic, and most of them are photochromic materials, most of which respond to stimuli and undergo a huge isomerization phenomenon and are rarely induced by electron transfer pathways. The discoloration phenomenon occurs, such as traditional discoloration materials synthesized mainly by piperazine and Schiff base ligands
If this situation cannot be improved, it will greatly restrict the development and application of such materials, so that it will develop into a bottleneck period.

Method used

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  • Application of viologen coordination compound crystal as multifunctional color-changing material
  • Application of viologen coordination compound crystal as multifunctional color-changing material
  • Application of viologen coordination compound crystal as multifunctional color-changing material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Example 1 Multifunctional viologen complex crystal (1)

[0036] 1. Preparation of viologen compound 1,1-bis(3-carboxyphenyl)-4,4-bipyridine dichloride (H 2 bcbpy 2Cl)

[0037] 4,4'-bipyridine (2g, 12.8mmol) and 3-chloromethylbenzoic acid (6.56g, 38.4mmol) were added into a 50mL round bottom flask filled with 13mL of N,N-dimethylformamide, in N 2 Under the protection of air, heat and reflux at 120°C for 8h, then cool to 25°C and filter to obtain a yellow precipitate, wash with hot DMF solution three times, then wash with ethanol three times, and dry in vacuum at 70°C for 12h . After recrystallization with acetone and deionized aqueous solution at a volume ratio of 1:1, H 2 bcbpy·2Cl viologen compound. The yield was 93%, elemental analysis C 26 h 22 o 4 N 2 Cl 2 (%): Theoretical value: C, 62.80; H, 4.42; N, 5.64%. Experimental values: C, 62.75; H, 4.58; N, 5.59%.

[0038] 2. Preparation of multifunctional viologen complex crystal [Zn(Ma)(bcbpy)Cl]·2H 2 o

[...

Embodiment 2

[0054] Example 2 Multifunctional Viologen Complex Crystal (2)

[0055] Zn(NO 3 ) 2 ·6H 2 O (0.15mmol, 45mg) and H 2 bcbpy·2Cl (0.05mmol, 24.8mg) was dissolved in a solution of 3ml deionized water and 3ml N,N-dimethylformamide, and dissolved by stirring, and the dissolved solution was placed in a 20ml polytetrafluoroethylene In a lined reaction kettle, the synthesis was carried out by solvothermal method. After the temperature was kept at 90°C for 2 days, it was cooled to room temperature, washed with deionized water, and then light yellow needle-like crystals were obtained, which was the target compound. The yield was 85%. Elemental Analysis C 27 h 25 o 8.5 N 2 ClZn (%): Theoretical: C, 43.71; H, 3.39; N, 3.46%. Experimental values: C, 43.11; H, 3.45; N, 3.33%.

Embodiment 3

[0056] Example 3 Multifunctional Viologen Complex Crystal (3)

[0057] Zn(NO 3 ) 2 ·6H 2 O (0.3mmol, 90mg) and H 2 bcbpy·2Cl (0.1mmol, 49.7mg) was dissolved in a solution of 2ml deionized water and 4ml N,N-dimethylformamide, and dissolved by stirring, and the dissolved solution was placed in a 20ml polytetrafluoroethylene In a lined reaction kettle, the synthesis was carried out by solvothermal method. After constant temperature at 85°C for 3 days, it was cooled to room temperature, washed with deionized water, and light yellow needle-like crystals were obtained, which was the target compound. The yield was 86%. Elemental Analysis C 27 h 25 o 8.5 N 2 ClZn (%): Theoretical: C, 43.71; H, 3.39; N, 3.46%. Experimental values: C, 43.12; H, 3.47; N, 3.36%.

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Abstract

The invention discloses an application of a viologen coordination compound crystal as a multifunctional color-changing material. The structural formula of the viologen coordination compound crystal isshown as a formula (I), wherein Ma is (CHO2)-. According to the invention, the H2bcbpy.2Cl molecules are used as objects, wherein metal Zn is used as the center, chlorine atoms and oxygen atoms are used as electron donors, so that a multifunctional color-changing material is provided; the material can response the ultraviolet light and blue light, and meanwhile thermal induction and ammonia gas induction color changing are achieved.

Description

technical field [0001] The invention relates to the application of a novel viologen color-changing crystal material, in particular to the application of a coordination compound synthesized based on electron transfer between viologen ligands and electron donor molecules in photochromism, thermochromism, NH 3 Applications in detection and / or UV-resistant and anti-blue light materials. Background technique [0002] The design and synthesis of bifunctional or multifunctional crystalline materials, such as materials with multiple ferromagnetism or multiple color-changing properties, have attracted great attention of researchers in the past few decades, which is based on the storage of these materials. Energy, magnetic materials, sensors, gas storage separation, catalytic performance, nonlinear optics, piezoelectric performance, proton conductivity, etc. have potential or have practical applications. Coordination compounds with color-changing properties are relatively common, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K9/02G01N21/78G02B5/20G02C7/10
CPCC07B2200/13C07F3/003C09K9/02C09K2211/1029C09K2211/188G01N21/783G02B5/20G02C7/102
Inventor 李国栋王海宇邹永存崔术新张文文王明华张鹤军郑永华司云凤刘洋吴潇
Owner 南京米兰达视光科学研究院有限公司
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