Supramolecular polymer assembled by main body and objective body based on double-column [5] arene, as well as preparation and application thereof

A supramolecular polymer, host-guest technology, applied in the adsorption of organic dyes, chemical synthesis, can solve erythema or red spots, not widely studied and reported, headache, sore throat, vomiting, abdominal pain, sore limbs And other issues

Inactive Publication Date: 2018-12-21
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although supramolecular polymers formed through host-guest interactions have been reported, supramolecular polymers formed from bispillar[5]arenes and bipyridyl salt derivatives through host-guest interactions have not been investigated in the adsorption of organic dyes. Extensive Research and Reporting
[0003] As a synthetic organic dye, rhodamine B is carcinogenic and is widely used in paper printing, textile printing and dyeing, leather and paint industries. The concentration of rhodamine B in dye wastewater is generally higher than 100 mg L － 1 , was once used as a food additive, but due to its proven carcinogenicity, rhodamine B is a substance that can poison people through the skin. It can produce toxicity and penetrate the skin at high concentrations, and headaches will occur after poisoning Symptoms such as sore throat, vomiting, abdominal pain, sore limbs, and some people's hands, feet, and chest will also appear red spots or red spots, so it has been clearly stipulated that it is not allowed to be used in food, but in recent years there are still reports of food being inspected Contains rhodamine B

Method used

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  • Supramolecular polymer assembled by main body and objective body based on double-column [5] arene, as well as preparation and application thereof
  • Supramolecular polymer assembled by main body and objective body based on double-column [5] arene, as well as preparation and application thereof
  • Supramolecular polymer assembled by main body and objective body based on double-column [5] arene, as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, the synthesis of supramolecular polymer P5S G

[0030] 1. Synthesis of host P5S

[0031] (1) Synthesis of compound 1: add 400mL acetone to a 500mL round bottom flask, add 4-methoxyphenol (2.48g, 20mmol), 1,4-dibromobutane (17.20, 80mmol), add K 2 CO 3 (8.40g, 60mmol) and KI (3.30g, 20mmol), add one or two drops of polyethylene glycol as a phase transfer catalyst, reflux at 60°C for 2 days, remove the solvent after the reaction, and separate by column chromatography to obtain compound 1 As a white solid (4.96g), the yield was 95%;

[0032] (2) Synthesis of compound 2: Add 80mL of 1,2-dichloroethane into a 100mL round-bottomed flask, add 1 (1.29g, 5.0mmol), 1,4-dimethoxybenzene (2.76g, 20.0 mmol) and paraformaldehyde (0.75g), add 3-5mL boron trifluoride diethyl ether dropwise to a round bottom flask in a fume hood, stir at 30°C for 30min, remove the solvent after the reaction, and separate by column chromatography to obtain the compound 2 is 1.3g of whit...

Embodiment 2

[0039] Example 2. Adsorption of supramolecular polymer P5S·G to rhodamine B in aqueous solution

[0040] The gel of supramolecular polymer P5S·G was dried in natural environment and became powder. Rhodamine B was dissolved in aqueous solution (1 × 10-5 mol / L, 10mL), the solution was rose red, adding a certain amount of dry gel powder, after a period of time, the rose red in the solution disappeared, and the dry powder of the gel also changed from the initial light yellow solid to rose red solid. It has been tested that supramolecular polymer P5S·G can remove more than 90% of rhodamine B in aqueous solution, so it can be used for the treatment of wastewater containing rhodamine B.

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Abstract

The invention designs and synthesizes a supramolecular polymer P5S.G assembled by a main body and an objective body based on double-column [5] arene. The supramolecular polymer is formed by assemblingand complexing aldehyde group functionalized double-column [5] arene (P5S) as the main body and 4,4'-bipyridinium derivative (G) as the objective body in cyclohexanol. The supramolecular polymer canbe acted with an organic dyestuff rhodamine B in water so as to realize high-efficiency adsorption on the organic dyestuff rhodamine B. After detection, the removal rate of the rhodamine B in the water solution through the supramolecular polymer P5S.G can reach 90 percent or more, so that the supramolecular polymer P5S.G can be used for treating waste water containing the rhodamine B.

Description

technical field [0001] The present invention relates to a supramolecular polymer and its synthesis method based on double pillar [5] aromatic hydrocarbon host-guest interaction; the present invention also relates to the application of the supramolecular polymer to efficiently adsorb the organic dye rhodamine B in aqueous solution, which belongs to chemical The field of synthesis, the field of adsorption of organic dyes. Background technique [0002] Pillar arenes are a kind of cyclic oligomers formed by linking hydroquinone or p-phenol ether at the para-position of the benzene ring through the methylene group. Since Ogoshi named this macrocyclic molecule with special properties in 2008, pillararene has experienced rapid development from preliminary synthesis, structure exploration, further functionalization, exploration of host-guest complexation properties, and self-assembly research. Its position in supramolecular host-guest chemistry is increasingly prominent. Due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C02F1/28C02F101/30
CPCC02F1/285C02F2101/308C08G83/008
Inventor 魏太保祁丽华丁金东马小强张有明林奇姚虹
Owner NORTHWEST NORMAL UNIVERSITY
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