A kind of porphyrin conjugated polymer of pincer complex bridge, synthesis method and application

A technology of conjugated polymers and synthesis methods, applied in electrolytic components, electrolytic processes, electrodes, etc., to achieve good hydrogen evolution performance

Active Publication Date: 2022-04-01
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are no research reports or patent publications at home and abroad on the preparation method of porphyrin conjugated polymers containing transition metal clamp complexes as bridging units and single-atom active sites and their electrocatalytic hydrogen evolution applications.

Method used

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  • A kind of porphyrin conjugated polymer of pincer complex bridge, synthesis method and application
  • A kind of porphyrin conjugated polymer of pincer complex bridge, synthesis method and application
  • A kind of porphyrin conjugated polymer of pincer complex bridge, synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] M was synthesized using the above synthetic route for conjugated polymers 1 Por-M 2 N 3 CP, M 1 =H 2 , M 2 = Ru, the product is labeled H 2 Por-RuN 3 CP.

[0049] Proceed as follows:

[0050] Add H to the sealed tube 2 Por (17.4mg) and RuN 3 (28.6mg), then put into a 1:1 volume ratio of o-dichlorobenzene-n-butanol mixed solvent (1.0mL), ultrasonic for 20 minutes, then add 6M acetic acid (0.1mL), after three freeze-pump-thaw cycles Afterwards, the tube was flame-sealed and reacted at 120° C. for 72 hours. The product was filtered, washed with methanol and dichloromethane, and extracted by Soxhlet for 24 hours, and finally vacuum-dried to obtain the conjugated polymer (H 2 Por-RuN 3 CP).

Embodiment 2

[0052] M was synthesized using the above synthetic route for conjugated polymers 1 Por-M 2 N 3 CP; M 1 = Cu, no M 2 When , the product is labeled as CuPor-N 3 CP.

[0053] Proceed as follows:

[0054] In a sealed tube add CuPor (18.9 mg) and N 3 (16.4mg), then put it into a 1:1 volume ratio of o-dichlorobenzene-n-butanol mixed solvent (1.0mL), sonicate for 20 minutes, then add 6M acetic acid (0.1mL), and freeze-pump-thaw three times Afterwards, the tube was flame-sealed and reacted at 120° C. for 72 hours. The product was filtered, washed with methanol and dichloromethane, and extracted by Soxhlet for 24 hours, and finally dried in vacuum to obtain a conjugated polymer (CuPor-N 3 CP).

Embodiment 3

[0056] M was synthesized using the above synthetic route for conjugated polymers 1 Por-M 2 N 3 CPs; M 1 =H 2 , without M 2 , the product is labeled as H 2 Por-N 3 CP.

[0057] Proceed as follows:

[0058] Add H to the sealed tube 2 Por (17.4mg) and N 3 (16.4mg), then put it into a 1:1 volume ratio of o-dichlorobenzene-n-butanol mixed solvent (1.0mL), sonicate for 20 minutes, then add 6M acetic acid (0.1mL), and freeze-pump-thaw three times Afterwards, the tube was flame-sealed and reacted at 120° C. for 72 hours. The product was filtered, washed with methanol and dichloromethane, and extracted by Soxhlet for 24 hours, and finally vacuum-dried to obtain the conjugated polymer (H 2 Por-N 3 CP).

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Abstract

The invention discloses a clamp complex bridged porphyrin conjugated polymer, a synthesis method and an application. The present invention adopts Schiff base condensation reaction to combine 5,10,15,20-tetrakis(4-formylphenyl)porphyrin or its corresponding copper complex (i.e. CuPor) with pincer ligand 2,6-bis(5 ‑Amino‑1H‑benzimidazolyl)pyridine or its corresponding ruthenium pincer complex (i.e. RuN 3 ) to form conjugated polymers. Among them, CuPor‑RuN 3 The ruthenium / copper bimetallic center and conjugated structure of CP improve the intrinsic conductivity of the polymer and the adsorption of water molecules, and accelerate the electron transfer between copper and ruthenium metal centers, thus improving its electrocatalytic hydrogen evolution performance. The conjugated polymer has a promising application prospect as a general hydrogen evolution electrocatalyst in the whole pH range.

Description

technical field [0001] The invention belongs to the technical field of organic polymer-based electrocatalytic materials and their electrocatalytic hydrogen evolution applications, and specifically relates to a porphyrin conjugated polymer bridged by clamp complexes, a synthesis method and applications thereof. Background technique [0002] Compared with fossil energy, hydrogen energy is considered an environmentally friendly fuel, with the advantages of non-pollution, renewable and high combustion value, and is considered an ideal substitute for fossil fuels. Hydrogen production from water splitting is a sustainable method to produce hydrogen energy, and electrocatalytic hydrogen evolution reaction (HER) has attracted widespread interest as an economical and environmentally friendly new energy technology. The method mainly uses a certain voltage applied to the electrodes in different electrolytes, the anode undergoes an oxygen evolution reaction, and the cathode undergoes a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/08C25B1/04C25B11/075
CPCC08G12/08C25B1/04Y02E60/36
Inventor 彭天右李仁杰王婷霞郭璐璐
Owner WUHAN UNIV
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