Coumarin connected conjugated porous polymer as well as preparation method and application thereof
A coumarin-linked conjugated porous polymer was prepared by Knauwengel condensation of o-hydroxybenzaldehyde monomer and phenylacetonitrile monomer. This solved the problem of photogenerated exciton recombination caused by the type of linkage in the prior art, and achieved high-efficiency photocatalytic performance. It is suitable for photocatalytic hydrolysis to produce hydrogen, photocatalytic hydrogen peroxide production, and photocatalytic degradation of pollutants.
Patent Information
- Application Number
- CN202411918117.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-06-26
AI Technical Summary
The bonding type of existing conjugated porous polymers leads to rapid recombination of photogenerated excitons, reducing light utilization and affecting photocatalytic reaction efficiency. Furthermore, the coumarin cyclization reaction is irreversible, resulting in low polymer porosity and poor regularity.
Coumarin-linked conjugated porous polymers were prepared by using o-hydroxybenzaldehyde monomers and phenylacetonitrile monomers via Knauwengel condensation reaction. By selecting appropriate reaction conditions and catalysts, a high porosity and fully conjugated structure were formed.
It improves the separation ability of photogenerated electrons and holes, enhances light utilization and photocatalytic efficiency, and the photocurrent can reach 1-20 μA·cm-2. The hydrogen production from photocatalytic water splitting is as high as 521 mmol h-1g-1. It is suitable for photocatalytic water splitting to produce hydrogen, photocatalytic hydrogen peroxide production, and photocatalytic degradation of pollutants.