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Luminous transition metal organic skeleton structure compound and preparation method thereof

An organic framework and transition metal technology, applied in the direction of zinc organic compounds, can solve problems such as instability, insufficient luminous intensity, and limited application range, and achieve high thermal stability, good fluorescence spectral characteristics, and strong operability Effect

Inactive Publication Date: 2011-06-01
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, 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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  • Luminous transition metal organic skeleton structure compound and preparation method thereof
  • Luminous transition metal organic skeleton structure compound and preparation method thereof
  • Luminous transition metal organic skeleton structure compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Under stirring condition, 4mmol trimesic acid is joined in the 9.6ml sodium hydroxide solution that concentration is 2mol / L, generates colorless and transparent solution; 4mmol o-phenanthroline is dissolved in 10ml ethanol, adds in the above-mentioned solution, A clear ligand solution was formed, stirred for 30 minutes; 19 ml of an aqueous solution containing 8 mmol of zinc acetate was added dropwise to the ligand solution to obtain a milky white solution, and continued to stir for 40 minutes; the solution was transferred to a 50 ml stainless steel closed reaction with a polytetrafluoroethylene liner In the kettle, hydrothermal reaction was carried out at 180°C under autogenous pressure for 120h. After the reaction, cool naturally at room temperature, wash, filter, and send it to an oven for drying at 45-55°C to obtain 0.178g of a metal-organic framework structure material with luminescent properties, and the yield is about 20% with trimesic acid as a reference .

[00...

Embodiment 2

[0037] Other steps are the same as in Example 1, except that zinc acetate is changed to zinc chloride, 4 mmol o-phenanthroline is dissolved in 5 ml ethanol, and finally 0.174 g of a metal-organic framework structure material with luminescent properties is obtained

Embodiment 3

[0039] The other steps are the same as in Example 1, except that the molar ratio of trimesic acid to lye is 1:4.5, and finally 0.165 g of a metal-organic framework structure substance with luminescent properties is obtained

[0040] Table 1. Crystal structure analysis data

[0041]

[0042] Table 2. Atomic coordinates (x 10^4) and equivalent isotropic displacement parameter U(eq)

[0043]

[0044]

[0045]

[0046]

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Abstract

The invention belongs to the preparation technical field of chemical compounds and in particular relates to a luminous transition metal organic skeleton structure compound and a preparation method thereof; the structural formula of the compound is (Zn5 (mu3-OH) (BTC)3 (phen) 4).5H2O, wherein the mu3 is oxygen bridge link; BTC is 1, 3, 5-trimesic acid (C9H6O6); the phen is 1, 10-o-phenanthroline (C12H8N2), the molecular formula of the crystal is C75H52N8O24Zn5, and the molecular weight thereof is 1776.1, the crystal belongs to a monoclinic system and a C2 / c space group, the cell parameter Beta is equal to 91.05(2) degrees, and the unit cell volume is that Z=8, Dc=1.673g / cm3. In the invention, cheap and nontoxic zinc acetate or zinc chloride is used as reactants, organic matters-trimesic acid and o-phenanthroline are used as ligands, so as to obtain Zn-MOFs material with a three-dimensional metal organic skeleton structure, the preparation process and equipment are simple, the heat stability of the material is high, the temperature can reach more than 400 DEG C, and the luminous transition metal organic skeleton structure compound can be widely applied to fluorescence labeling objects of organicbodies.

Description

technical field [0001] The invention belongs to the technical field of chemical compound preparation, in particular to a light-emitting transition 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 potenti...

Claims

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Application Information

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