Luminescent transition metal organic framework compound and preparation method thereof

An organic framework and transition metal technology, applied in the direction of zinc organic compounds, chemical instruments and methods, luminescent materials, etc., can solve the problems of insufficient luminous intensity, limited application range, instability, etc., and achieve easy promotion and operability Strong, high thermal stability effect

Inactive Publication Date: 2011-12-28
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the rare earth-organic frameworks reported for fluorescence detection are based on organic solvents and are unstable in aqueous solution, which limits their practical application range.
In addition, the insufficient luminous intensity is an important factor hindering its application.

Method used

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  • Luminescent transition metal organic framework compound and preparation method thereof
  • Luminescent transition metal organic framework compound and preparation method thereof
  • Luminescent transition metal organic framework compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Under stirring conditions, 4mmol of trimesic acid was added to 10ml of sodium hydroxide solution with a concentration of 2mol / L to form a colorless and transparent solution; 4mmol of phenanthroline was dissolved in 10ml of ethanol and added to the above solution to form The clarified ligand solution was stirred for 30 minutes; 19 ml of an aqueous solution containing 8 mmol of zinc chloride was added dropwise into the ligand solution to obtain a milky white solution, and the stirring was continued for 40 minutes; In the kettle, hydrothermal reaction was carried out at 180°C under autogenous pressure for 120h. After the reaction, it was naturally cooled at room temperature, washed, filtered, and dried in an oven at 45-55° C. to obtain about 0.47 g of a metal-organic framework structure material with luminescent properties. Using trimesic acid as a reference, the yield of HUT-76 is about 58%.

[0029] The product, physical and chemical properties and structure were analyz...

Embodiment 2

[0042] Other steps are the same as in Example 1, except that zinc chloride is changed to zinc acetate, 4 mmol o-phenanthroline is dissolved in 5 ml ethanol, and finally 0.465 g of a metal-organic framework structure material with luminescent properties is obtained

Embodiment 3

[0044] Other steps were the same as in Example 1, except that the molar ratio of trimesic acid to lye was 1:5.2, and finally 0.479 g of a metal-organic framework structure material with luminescent properties was obtained.

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Abstract

The invention belongs to the technical field of chemical compound preparation, and specifically relates to a novel metal-organic framework compound and a preparation method thereof. Its structural formula: [Zn4(μ4-O)(BTC)2(phen)2] 4H2O, where μ4 is an oxygen bridge; BTC is: 1,3,5-trimesic acid (C9H6O6); phen is 1, 10-o-phenanthroline (C12H8N2), its molecular formula is C42H30N4O17Zn4, molecular weight is 1124.18, belongs to monoclinic system, C2 / c space group, unit cell parameter β=92.353 (3) °, unit cell volume is Z=4, Dc = 1.806 g / cm3. The present invention adopts cheap, non-toxic zinc acetate or zinc chloride as reactants, and uses organic trimesic acid and phenanthroline as ligands to obtain a Zn-MOFs material with a three-dimensional metal-organic framework structure, and its preparation process And the device is simple, the thermal stability of the material is high, can reach more than 450 ℃, can be widely used in biological fluorescent markers.

Description

technical field [0001] The invention belongs to the technical field of chemical compound preparation, and specifically relates to a novel metal-organic framework compound and a preparation method thereof. Background technique [0002] Metal-organic frameworks (MOFs) are network materials synthesized by molecular self-assembly of oxygen or nitrogen-containing organic ligands and transition metals, and are one of the hot research fields today. It is amphoteric in nature and provides Lewis acid sites in addition to Lewis base sites. Metal ions play two roles in the framework, one is to provide the backbone of the framework as nodes, and the other is to form branches in the backbone to enhance the physical properties (such as porosity and chirality) of MOFs. MOFs can still maintain the integrity of the structure after removing solvent molecules in the pores, and the specific surface area is much larger than molecular sieves with similar pores, so MOFs have many potential specia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/06C09K11/06
Inventor 任铁真郑冉肖鹏艳
Owner HEBEI UNIV OF TECH
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