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Microporous chiral carboxylate ligand erbium coordination polymer and preparation method thereof

A technology of coordination polymer and chiral carboxylic acid, which is applied in the field of microporous chiral carboxylic acid ligand erbium coordination polymer and its preparation, and the field of functional materials for selectively adsorbing gas, which can solve the problem of pore size limitation and the like

Inactive Publication Date: 2014-10-01
GUANGXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is very challenging to design and construct such pore structures with special structures and properties, especially for materials with selective gas adsorption function, because the pore size of such polymer materials is strictly limited.

Method used

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  • Microporous chiral carboxylate ligand erbium coordination polymer and preparation method thereof
  • Microporous chiral carboxylate ligand erbium coordination polymer and preparation method thereof
  • Microporous chiral carboxylate ligand erbium coordination polymer and preparation method thereof

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Experimental program
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Embodiment Construction

[0024] Synthesis of coordination polymers:

[0025] Ligand L-TMTAH 3 (0.1 mmol, 0.0423 g), metal salt Er(NO 3 ) 2 ·6H 2 O (0.3 mmol, 0.0873 g), isopropanol (0.5 mL) and N,N-dimethylacetamide (1 mL) were mixed in a 20 cm long glass tube with an inner diameter of about 1.0 cm and one end sealed. Subsequently, the solution was frozen with liquid nitrogen, and the other end of the glass tube was sealed with a liquefied gas flame while vacuuming. Place at room temperature for 0.5 h. After the solution in the glass tube melts, place it in an oven at 100 °C for 5 days, take it out and place it in an incubator and slowly cool it down for 1 day. It is observed that there are light pink rhombic crystals on the tube wall. Vacuum dried, weighed to obtain 0.0126 g, yield: 54%.

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Abstract

The invention discloses a microporous chiral carboxylate ligand erbium coordination polymer and pa reparation method thereof. The erbium coordination polymer is a microporous chiral three-dimensional frame structural complex, as shown in a chemical formula that [(CH3)2NH2] [Er2(L-TMTA)2(NO3)(H2O)2] 4DMA 6H2O, wherein L-TMTA is benzenetricarbonyl tri(L-alanine), and DMA is N, N-dimethylacetamide. According to the preparation method, the prepared complex is equipped with a large one-dimensional pipeline that extends along the direction of an axis c, the effective aperture reaches 1.4nm, and the hole accounts for 64% of the volume of an unit cell; and the coordination polymer shows a potential application value in the modern biomedicine, optics, magnetic, catalyzing and loading and separating of gas, especially selective gas absorbing function.

Description

technical field [0001] The invention relates to a functional material, in particular to a functional material for selectively adsorbing gas, in particular to a microporous chiral carboxylic acid ligand erbium coordination polymer and a preparation method thereof. Background technique [0002] Metal-organic framework compounds have been continuously designed and constructed by chemists in the past few years. In recent years, the development of porous materials can be described as changing with each passing day. The strong coordination ability of carboxyl ligands makes them a good choice for forming metal-framed structures. The main research object, metal-organic framework coordination compounds not only have novel and exquisite topological structures, but also have a wide range of applications in modern biomedicine, optics, magnetism, catalysis, and gas loading and separation [O. M. Yaghi, M. Ockwing, et al . al. Nature 2003, 423: 705.]. However, it is very challenging to de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00
Inventor 陈自卢王新玉巨文强梁福沛张中
Owner GUANGXI NORMAL UNIV