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Synthetic method and application of inorganic organic hybrid oxalic acid gallium fluoride photochromic material

A photochromic material, gallium fluoride oxalate technology, applied in color-changing fluorescent materials, organic compounds/hydrides/coordination complex catalysts, organic chemistry, etc., to achieve rapid fading, fast photoresponse speed, good light and heat stability The effect of sex and fatigue resistance

Active Publication Date: 2019-09-24
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the regulation of photochromic behavior on related physical and chemical properties, such as gas adsorption, conductance, magnetism, photoluminescence and photocurrent response, has aroused strong interest of researchers. The impact is rarely reported

Method used

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  • Synthetic method and application of inorganic organic hybrid oxalic acid gallium fluoride photochromic material
  • Synthetic method and application of inorganic organic hybrid oxalic acid gallium fluoride photochromic material
  • Synthetic method and application of inorganic organic hybrid oxalic acid gallium fluoride photochromic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Synthesis method and application of an inorganic-organic hybrid gallium fluoride photochromic material

[0034] Using gallium oxide, 4,4'-bipyridine, hydrofluoric acid, choline chloride and oxalic acid as ionic solvents, the crystal material was synthesized by reacting at 140°C for 3 days.

[0035]Add 0.5mmol of gallium oxide, 1mmol of 4,4'-bipyridine, 5mmol of hydrofluoric acid, 5mmol of choline chloride, and 10mmol of oxalic acid into a 25mL polytetrafluoroethylene-lined stainless steel kettle. Heat it in an oven at 140°C for 3 days. After the reaction was completed, the reactor was taken out and allowed to cool naturally at room temperature; the product was removed, ultrasonically washed three times with deionized water, and dried at 70°C.

[0036] The prepared crystal characterization results are as follows:

[0037] Such as figure 1 As shown, the obtained crystals are long strips with a particle size of about 30×5 μm.

[0038] Such as figure 2 As sh...

Embodiment 2

[0053] Example 2 Synthesis method and application of an inorganic-organic hybrid gallium fluoride photochromic material

[0054] Using gallium nitrate, 4,4'-bipyridine, hydrofluoric acid, choline chloride and oxalic acid as ionic solvents, the crystal material was synthesized by reacting at 135°C for 5 days.

[0055] Add 0.5mmol of gallium nitrate, 2mmol of 4,4'-bipyridine, 10mmol of hydrofluoric acid, 10mmol of choline chloride, and 30mmol of oxalic acid into a 25mL polytetrafluoroethylene-lined stainless steel kettle, and finally seal the reaction kettle and put Heat in an oven at 135°C for 5 days; after the reaction is complete, take out the reactor and let it cool naturally at room temperature; remove the product, wash it repeatedly with deionized water for 3 times, and dry it at 70°C.

[0056] The prepared crystal characterization results are as follows:

[0057] The obtained crystal has good photochromic properties, can rapidly change color under 30W ultraviolet light i...

Embodiment 3

[0058] Example 3 Synthesis method and application of an inorganic-organic hybrid gallium fluoride photochromic material

[0059] Using gallium oxyhydroxide, 2,2'-bipyridine, hydrofluoric acid, choline chloride and oxalic acid as ionic solvents, the crystal material was synthesized by reacting at 150°C for 6 days.

[0060] Add 1mmol of gallium oxyhydroxide, 1mmol of 2,2'-bipyridine, 8mmol of hydrofluoric acid, 20mmol of choline chloride, and 20mmol of oxalic acid into a 25mL polytetrafluoroethylene-lined stainless steel kettle. Heat it in an oven at 150°C for 6 days. After the reaction was completed, the reactor was taken out and allowed to cool naturally at room temperature; the product was removed, ultrasonically washed three times with deionized water, and dried at 70°C.

[0061] The prepared crystal characterization results are as follows:

[0062] The obtained crystal has good photochromic properties, can rapidly change color under 30W ultraviolet light irradiation, and ...

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Abstract

The invention discloses a synthetic method of an inorganic organic hybrid oxalic acid gallium fluoride photochromic material. The material comprises the following steps: carrying out a reaction on a mixture of a gallium-containing metal source, an organic ligand, hydrofluoric acid and DESs for 2-8 days under a sealing condition at 120-160 DEG C, wherein the DESs are choline chloride and oxalic acid, and the molar ratio of the gallium-containing metal source to the organic ligand to the hydrofluoric acid to the choline chloride in the DESS is (0.5-1):(1-2):(5-10):(5-20). The inorganic organic hybrid oxalic acid gallium fluoride photochromic material synthesized by the method is fast in light response speed and rapid in fading, has relatively good photo-thermal stability and fatigue resistance, and can be used for controllable regulation and control of photocatalytic performance.

Description

technical field [0001] The invention relates to the technical field of photochromic materials, in particular to the synthesis and application of an inorganic-organic hybrid gallium fluoride photochromic material. Background technique [0002] As a renewable energy technology, photocatalytic technology has been widely used to generate hydrogen energy, degrade environmental pollutants and catalyze many important organic reactions (such as hydrogenation, formylation, alcohol oxidation, oxidative coupling, etc.). Compared with the traditional thermochemical pathway, photochemistry can easily generate highly active free radicals, which can carry out some challenging reactions (such as photolysis of water to produce hydrogen, C sp 3 -H bond activation, etc.). In recent years, although strategies based on homogeneous catalysts such as bipyridyl ruthenium, iridium, and palladium complexes to construct C-H bond activation and C-heteroatom bonds have developed rapidly, heterogeneous...

Claims

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Application Information

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IPC IPC(8): C07F5/00C09K9/02B01J31/22B01J31/18C02F1/32C02F101/30
CPCC07F5/003C09K9/02B01J31/2239B01J31/1815C02F1/32C07B2200/13C09K2211/188B01J2531/32B01J2531/0213C02F2305/10C02F2101/308B01J35/39
Inventor 吴俊标娄璐琪孙华英张霞
Owner NORTHEASTERN UNIV
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