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Zinc-organic coordination polymer containing meso-helical chain and preparation method and application of zinc-organic coordination polymercontaining meso-helical chain

A technology of coordination polymer and coordination polymerization, applied in chemical instruments and methods, instruments, analytical materials, etc., can solve the problems of unpredictable topology and performance, and achieve the effect of high thermal stability

Active Publication Date: 2020-02-14
CHONGQING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure determines the performance. For polymers, the building blocks (such as metal ions, organic ligands, etc.) and topology are the key factors that determine the performance of materials, but the microscopic process of chemical reactions, topology and performance are often difficult to predict

Method used

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  • Zinc-organic coordination polymer containing meso-helical chain and preparation method and application of zinc-organic coordination polymercontaining meso-helical chain
  • Zinc-organic coordination polymer containing meso-helical chain and preparation method and application of zinc-organic coordination polymercontaining meso-helical chain
  • Zinc-organic coordination polymer containing meso-helical chain and preparation method and application of zinc-organic coordination polymercontaining meso-helical chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take the material according to the following specific mass or volume: H 4 pbop (21.9mg, 0.05mmol), 4-ppp (9.0mg, 0.025mmol), Zn(NO 3 ) 2 ·6H 2 O (29.7 mg, 0.1 mmol), CH 3 CN (1 mL) and H 2 O (9 mL). Put the above materials in a 25mL reaction kettle, stir for about 10min, heat up to 170°C, react for 3d, and cool to room temperature naturally to obtain blocky crystal samples, which are filtered from the mother liquor, washed with distilled water, and naturally cooled in the air at room temperature dry.

[0032] To the prepared crystal sample of the zinc-organic coordination polymer containing internal elimination helical chains, the Shimadzu XRD-6100 type X-ray diffractometer is used to carry out the powder diffraction test (see image 3 , abscissa-angle; ordinate-diffraction intensity), the peak of the test spectrum and the peak of the crystal structure fitting spectrum can be well matched (software Mercury), indicating that the structure of the obtained crystal sa...

Embodiment 2

[0047] Take the material according to the following specific mass or volume: H 4 pbop (21.9mg, 0.05mmol), 4-ppp (18.1mg, 0.05mmol), Zn(NO 3 ) 2 ·6H 2 O (29.7 mg, 0.1 mmol), H 2 O (10 mL). Put the above materials in a 25mL reactor, stir for 30min, heat up to 140°C, react for 5d, and cool to room temperature naturally to obtain massive crystals, which are filtered out from the mother liquor, washed with distilled water, and dried naturally in air at room temperature.

[0048] Product powder X-ray diffraction characterization (see image 3 ), the data obtained are similar to those in Example 1. It shows that the crystal structure prepared by Example 2 does not change, and the product has high purity.

[0049] This example was repeated several times, and the actual mass of the coordination polymer was maintained at 22.4-27.3 mg, and the yield calculated based on the amount of 4-ppp was 49.8%-60.7%.

Embodiment 3

[0051] Take the material according to the following specific mass or volume: H 4 pbop (21.9mg, 0.05mmol), 4-ppp (9.0mg, 0.025mmol), Zn(NO 3 ) 2 ·6H 2 O (15.0 mg, 0.05 mmol), CH 3 CN (3mL) and H 2 O (7 mL). Put the above materials in a 25mL reactor, stir for 30min, heat up to 160°C, react for 4d, and cool to room temperature naturally to obtain massive crystals, which are filtered out from the mother liquor, washed with distilled water, and dried naturally in air at room temperature.

[0052] Product powder X-ray diffraction characterization (see image 3 ), the data obtained are similar to those in Example 1. It shows that the crystal structure prepared by Example 3 does not change and the product is relatively pure.

[0053] This example was repeated several times, and the actual mass of the coordination polymer was maintained at 16.6-19.4 mg, and the yield calculated based on the amount of 4-ppp was 73.8%-86.2%.

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Abstract

The invention provides a zinc-organic coordination polymer containing a meso-helical chain. The chemical general formula of the zinc-organic coordination polymer is {[Zn(H<2>pbop)(4-ppp)](H<2>O)<2>}<n>, the zinc-organic coordination polymer belongs to a monoclinic system, a space group is P2 / n, and unit cell parameters a=10.673(10) angstrom, b=8.726(8) angstrom, c=21.867(17) angstrom, beta=97.33(2) degrees, and V=2020(3) angstrom<3>. H<2>pbop<2-> is obtained by removing two protons from semi-rigid quaternary organic carboxylic acid H<4>pbop. The structure of H<4>pbop is as shown in a formula Idefined in the description, and the structure of 4-ppp is as shown in a formula IIdefined in the description. H<2>pbop<2->, 4-ppp and Zn<2+> construct a one-dimensional metal-organic coordination polymer containing the meso-helical chain, and two opposite active groups, Lewis acid (COOH) and Lewis base (pyridyl C5H4N), are retained in the structure. The yield of the green fluorescent zinc-organiccoordination polymer prepared by a method provided by the invention reaches about 91%, and the zinc-organic coordination polymer can be used as a fluorescent probe of Cl<-> / Br<-> / I<-> / Ba<2+> / Fe<3+> / Cr<3+> in aqueous solutions.

Description

technical field [0001] The invention belongs to the field of advanced luminescent materials, and in particular relates to a zinc-organic coordination polymer containing internal elimination helical chains and its preparation method and application. Background technique [0002] Since the 1970s, fluorescence analysis has developed rapidly in terms of instruments, methods, and reagents, and has been widely used in the fields of environment, chemistry, chemical engineering, and life sciences. Most metal ion inorganic salts do not produce fluorescence, but in some cases, metal chelates can produce strong fluorescence. At present, there are more than 60 kinds of inorganic elements for fluorescence analysis with the help of organic reagents, and the analysis sensitivity can reach Micrograms / upgrade, similar to atomic absorption spectrometry, with less spectral interference. However, the anions and cations of common non-metal elements (such as chlorine, bromine, iodine, sulfur, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06C09K2211/188G01N21/643
Inventor 黄坤林叶文勇孙伟陈新郭媛媛吴越
Owner CHONGQING NORMAL UNIVERSITY
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