Synthesis and application of conjugated imide polymer containing dibenzothiophene sulfone

A technology of conjugated imide and benzothiophene sulfone, which is applied in the direction of organic compound/hydride/coordination complex catalyst, chemical/physical process, physical/chemical process catalyst, etc. Inconvenient mechanism research, palladium metal residue and other problems, to achieve the effect of high industrial application value, easy promotion and utilization, and easy acquisition

Active Publication Date: 2022-06-14
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of common conjugated polymers usually uses bistriphenylphosphine palladium dichloride as a catalyst, resulting in some palladium metal residues

Method used

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  • Synthesis and application of conjugated imide polymer containing dibenzothiophene sulfone
  • Synthesis and application of conjugated imide polymer containing dibenzothiophene sulfone
  • Synthesis and application of conjugated imide polymer containing dibenzothiophene sulfone

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Embodiment

[0020] Combine pyromellitic dianhydride (16.5 mg, 0.075 mmol) and 3,7-diaminodibenzo[b,d]thiophene 5,5-dioxide (18.5 mg, 0.075 mmol) and 1.05 mL isoquinoline / N-methylpyrrolidone (NMP) / mesitylene (Mes) mixed system (1:10:10, v / v / v) placed in a Pyrex tube (volume about 5mL, body length 20 cm, neck length 1 cm) , after ultrasonic treatment for 10 minutes, the Pyrex tube was quickly frozen in a liquid nitrogen bath and then vacuumed, thawed and then frozen and vacuumed, and the thawing-freezing-vacuuming was repeated three times until the internal pressure of the container was 0 mbar, and flame sealing was performed. After warming up to room temperature, the closed Pyrex tube was placed in an oven at 200 °C for 5 days, resulting in a yellow solid. The precipitate was collected by suction filtration, washed three times with tetrahydrofuran, washed three times with acetone, and vacuum-dried at 80 °C overnight to obtain a mixture containing dihydrofuran. Conjugated imide polymers (S...

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Abstract

The invention discloses a synthetic method of a conjugated imide polymer containing dibenzothiophene sulfone and application of the conjugated imide polymer in photocatalytic carbon dioxide reduction, and belongs to the field of material preparation and photocatalytic organic synthesis. 3, 7-diaminodibenzo [b, d] thiophene 5, 5-dioxide and pyromellitic dianhydride are used as polymeric monomers, an isoquinoline/N-methyl pyrrolidone/mesitylene mixed system is used as a reaction solvent, freezing, unfreezing, vacuumizing and heat preservation treatment are carried out, the conjugated imide polymer containing dibenzothiophene sulfone is obtained, the preparation conditions are mild, the cost is low, and the conjugated imide polymer containing dibenzothiophene sulfone is suitable for industrial production. The preparation method is simple, the operation is convenient, and the obtained polymer has a relatively strong conjugated structure, excellent optical capturing capability and good stability, has the advantages of relatively high activity of photocatalytic reduction of carbon dioxide, strong selectivity and the like, and has relatively great application potential in the field of photocatalysis.

Description

technical field [0001] The invention belongs to the field of material preparation and photocatalytic organic synthesis, in particular to the synthesis of a conjugated imide polymer containing dibenzothiophene sulfone and its application in photocatalytic reduction of carbon dioxide to carbon monoxide. Background technique [0002] With the rapid development of industry and the gradual increase of fossil energy consumption, carbon dioxide emissions are increasing day by day. The use of clean and renewable solar energy to reduce carbon dioxide photocatalytically to hydrocarbon fuels can not only achieve the purpose of energy conservation, emission reduction and suppression of the greenhouse effect, but also alleviate the Energy shortage problem, to achieve the dual benefits of environmental protection and carbon dioxide resources. Among the numerous photocatalysts, the emerging organic conjugated polymer photocatalysts are characterized by their flexible structural and optical...

Claims

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Application Information

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IPC IPC(8): C08G73/10B01J31/06C01B32/40
CPCC08G73/1067C08G73/1064C08G73/1007B01J31/06B01J35/004C01B32/40
Inventor 李留义李慧珍于岩
Owner FUZHOU UNIV
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