Continuous photocatalytic C-C coupling achieved using palladium anchored to a covalent organic framework

Area of Science:

• Materials Science
• Catalysis
• Organic Chemistry

Background:

• Single-atom catalysts offer unique reactivity and selectivity.
• Palladium-based catalysts are crucial for C-C coupling reactions.
• Continuous-flow reactors enable efficient and scalable chemical synthesis.

Purpose of the Study:

• To report the first single-atom palladium photocatalyst for continuous C-C coupling.
• To evaluate the catalyst's efficiency, stability, and potential for practical applications.

Main Methods:

• Synthesis of a single-atom palladium catalyst supported on an Acetylene-linked Covalent Organic Framework (Pd-Ace-COF).
• Photocatalytic C-C coupling reaction using visible light irradiation in a continuous-flow reactor.
• Analysis of reaction yield, product purity, and catalyst stability.

Main Results:

• Pd-Ace-COF demonstrated high efficiency in driving C-C coupling reactions.
• Biphenyl was formed with a yield exceeding 99% under visible light.
• The catalyst exhibited excellent stability and high activity within the continuous-flow system.

Conclusions:

• Single-atom palladium on Ace-COF is an effective photocatalyst for continuous C-C coupling.
• The catalyst's performance highlights its potential for scalable and practical chemical synthesis.
• This work advances the development of efficient photocatalytic systems for organic transformations.