Novel light-emitting transition metal organic framework structured compound and preparation method thereof

A transition metal, organic framework technology, applied in zinc-organic compounds, chemical instruments and methods, luminescent materials, etc., can solve the problems of instability, limited application scope, insufficient luminous intensity for applications, etc. The effect of strong operability and good fluorescence spectral characteristics

Inactive Publication Date: 2010-07-28
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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,

Method used

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  • Novel light-emitting transition metal organic framework structured compound and preparation method thereof
  • Novel light-emitting transition metal organic framework structured compound and preparation method thereof
  • Novel light-emitting transition metal organic framework structured 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 in particular provides a novel metal organic framework structured compound and a preparation method thereof. The structural formula of the compound is [Zn4(mu4-O)(BTC)2(phen)2].4H2O, wherein mu4 is oxo-bridged; BTC is 1,3,5-trimesic acid (C9H6O6); phen is 1,10-o-phenanthroline (C12H8N2); the molecular formula of the compound is C42H30N4O17Zn4 and the molecular weight is 1124.18; the compound belongs to the monoclinic system and C2/c space group; the cell parameter beta is 92.353(3) degrees; the cell volume is shown in the specification, Z is 4 and Dc is 1.806g/cm3. In the method, the cheap and nontoxic zinc acetate or zinc chloride is used as the reactant and the organics trimesic acid and o-phenanthroline are used as the ligands to obtain the Zn-MOFs material. The compound has simple preparation process and equipment and high heat stability at the temperature of more than 450 DEG C and can be widely applied to fluorescent organism 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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IPC IPC(8): C07F3/06C09K11/06
Inventor 任铁真郑冉肖鹏艳
Owner HEBEI UNIV OF TECH
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