Spherical Covalent Organic Framework-like Material with a Vinylene Bridge for a Photothermal-Driven Suzuki Coupling...

Turning a traditional homogeneous reaction into a heterogeneous catalytic process has long been a crucial issue in the chemical industry because of favorable cost reduction from catalyst recycling. Modification of these heterogeneous catalysts could enable various functions that further benefit energy consumption and production efficiency. In this work, a spherical covalent organic framework like (COF-like) material (PDPP-TBP) was developed, which possesses broad light absorption properties and efficient photothermal conversion capabilities, with the highest surface temperature increased by over 70 °C from room temperature under the simulated light irradiation (1 kW m^-2, equal to one sun). Palladium nanoparticles (Pd NPs) were successfully loaded onto PDPP-TBP by an impregnation-reduction method, forming photothermal heterogeneous catalyst Pd@PDPP-TBP. Such a composite exhibited high product yield and recyclability in photothermally driven Suzuki-Miyaura cross couplings, implying great potential of Pd@PDPP-TBP for advancing the field of heterogeneous catalysis, particularly in applications requiring environmentally friendly and energy-efficient processes.