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Pamoic acid cadmium light-emitting material containing dipyridyl type ligand and preparation method of pamoic acid cadmium light-emitting material

A luminescent material, bipyridine technology, applied in the field of cadmium peridyl luminescent material containing bipyridine ligand and its preparation, can solve the problems of easy reunion and crystallization of devices, high price, fluorescence quenching, etc., and achieve synthesis process and production Simple equipment, high final yield and purity, and good experimental reproducibility

Active Publication Date: 2016-06-15
常州市玉兴涂装工程有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Traditional phosphors are prepared by high-temperature solid-phase method, which has disadvantages such as poor controllability of the synthesis process, less reserves of oxide raw materials, high energy consumption, and high price.
Organic small molecule light-emitting materials are prone to fluorescence quenching in the solid state, and devices made by doping are easy to reunite and crystallize, the life of the device is significantly reduced, and the final product is not environmentally friendly.

Method used

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  • Pamoic acid cadmium light-emitting material containing dipyridyl type ligand and preparation method of pamoic acid cadmium light-emitting material
  • Pamoic acid cadmium light-emitting material containing dipyridyl type ligand and preparation method of pamoic acid cadmium light-emitting material
  • Pamoic acid cadmium light-emitting material containing dipyridyl type ligand and preparation method of pamoic acid cadmium light-emitting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In order to expand the synthesis space of luminescent materials, reduce synthesis cost and energy consumption, and simplify the material synthesis process, the inventor finally obtained a reasonable and perfect synthesis scheme after repeated theoretical analysis and experimental attempts, and decided to use cheap Cd(OAc) 2 2H 2 O, phenacid (molecular formula C 23 h 16 o 6 ), and 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (molecular formula C 12 h 8 N 4 S) As a starting material, the above-mentioned novel luminescent metal-organic framework compound with excellent luminescent properties can be prepared by using a hydrothermal method.

[0035] A specific preparation method of a cadmium phenicate luminescent material containing a bipyridine ligand in this embodiment is as follows:

[0036]Under stirring conditions, 0.6mL of 1mol / L aqueous sodium hydroxide solution and 0.4mmol of phenacid were added to 10mL of water, and stirred for 5min to form a colorless and clear solut...

Embodiment 2

[0050] A cadmium peridyl luminescent material containing a bipyridine-type ligand and its preparation method in this example are basically the same as in Example 1, except that the process of preparing a novel metal-organic framework compound in this example is as follows:

[0051] Under stirring conditions, add 1mol / L aqueous sodium hydroxide solution and 0.4mmol piperic acid into 10mL water respectively, the molar ratio of sodium hydroxide to piperic acid is 1.6:1, stir for 5min to generate a colorless and clear solution; add 0.4mmol2 ,5-bis(4-pyridyl)-1,3,4-thiadiazole was added to 2mL methanol-7.3mL water system, stirred for 5min; 0.6mmolCd(NO 3 ) 2 4H 2 O was added to the above mixed solution, stirred and reacted for 10 min; the obtained solution was transferred to a closed steel reaction kettle with a polytetrafluoroethylene liner, and reacted at 155°C for 3 days under autogenous pressure; then naturally cooled to room temperature, washed and filtered , and naturally d...

Embodiment 3

[0053] A cadmium peridyl luminescent material containing a bipyridine-type ligand and its preparation method in this example are basically the same as in Example 1, except that the process of preparing a novel metal-organic framework compound in this example is as follows:

[0054] Under stirring conditions, add 1mol / L sodium hydroxide aqueous solution and 0.4mmol piperic acid into 10mL water respectively, the molar ratio of sodium hydroxide to piperic acid is 1.7:1, stir for 5min to form a colorless and clear solution; add 0.4mmol2 ,5-bis(4-pyridyl)-1,3,4-thiadiazole was added to 3mL methanol-6.2mL water system, stirred for 5min; 0.8mmolCdSO 4 8 / 3H 2 O was added to the above mixed solution, stirred and reacted for 10 min; the resulting solution was transferred to a closed steel reaction kettle lined with polytetrafluoroethylene, and reacted at 165 °C for 4 d under autogenous pressure; then naturally cooled to room temperature, washed and filtered , and naturally dried to obt...

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Abstract

The invention discloses a pamoic acid cadmium light-emitting material containing dipyridyl type ligand and a preparation method of the pamoic acid cadmium light-emitting material, and belongs to the technical field of organic-inorganic chemical hybridization compound preparation. The structural formula of the light-emitting material is Cd2(pam)2(bpt)2(H2O).0.68H2O, wherein pam is deprotonated pamoic acid (C23H14O6), and bpt is 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (C12H8N4S). The molecular formula of the material is C70H47.36Cd2N8O13.68S2, the material belongs to a trigonal system, the space group is shown in the description, and the cell parameter is shown in the description, wherein alpha is equal to beta and equal to 90 degrees, and gamma is equal to 120 degrees. Cheap inorganic cadmium salt and pamoic acid are adopted as reactants, organic matter 2,5-bis(4-pyridyl)-1,3,4-thiadiazole is adopted as the bridging ligand, the cadmium-based material of a three-dimensional metal organic skeleton structure is obtained through a hydrothermal method, and the material is a new product synthesized in a laboratory. The synthesis process and production equipment are simple, the material is high in final yield and good in thermal stability, the light-emitting intensity of the bulk phase material is high, and the material can be widely applied to various light emitting fields.

Description

technical field [0001] The invention belongs to the technical field of preparation of organic-inorganic chemical hybrid compounds, in particular to a cadmium piperate luminescent material containing a bipyridyl ligand and a preparation method thereof. Background technique [0002] Metal-organic frameworks (MOFs) refer to infinite network-like porous polymer materials formed by self-assembly of metal ions or clusters and organic bridging ligands through coordination bonding and crystal engineering principles. As a new class of multifunctional materials, MOFs have high specific surface area, adjustable pore size, low density, high purity, good chemical stability, easy biodegradability, unique active sites and surface modification. The obtained multiple potential functions and other characteristics have good performance and potential application value in the fields of new materials such as energy storage, adsorption separation, catalytic performance, molecular magnetic material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06
CPCC08G83/008C09K11/06C09K2211/1466C09K2211/1483C09K2211/188
Inventor 文桂林刘道富赵星王凤武魏亦军陈永红
Owner 常州市玉兴涂装工程有限公司
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