Ultrathin organic polymer with p-p conjugated structure for simultaneous photocatalytic disulfide bond generation and CO2 reduction

作者：Hou, Linquan; Tang, Zhunyun; Mao, Guojiang; Yin, Shiheng; Long, Bei; Ouyang, Tao^*; Deng, Guo-Jun; Ali, Atif; Song, Ting^*

来源：Journal of Energy Chemistry, 2023, 76: 639-647.

DOI：10.1016/j.jechem.2022.10.003

• Photocatalytic coupled reaction
• Disulfide bond
• CO2 reduction
• High activity
• Organic polymer

Combining photocatalytic organic reactions with CO2 reduction is an efficient solar energy utilization mode, but it is still limited by the organic species that can be matched and the low conversion. Herein, ultrathin organic polymer with p -p conjugated structure (TPP) was rationally designed and prepared, and showed a high yield of CO (15.2 mmol g-1) and conversion of S-S coupled products (100%), far exceeding the organic polymer with P@O structure. The enhanced photoredox activity of TPP is ascribed to the orbital interaction between the p-orbital on phosphorus and the p-orbitals of aromatic, which can accelerate the photoinduced charge carrier separation and improve the CO2 adsorption capacity. TPP can also be used for the dehydrocoupling of various benzyl mercaptans to the corresponding S-S bond prod-ucts. This work provides a new concept for the efficient synthesis of disulfide bonds combined with CO2 reduction in a photoreaction system.

• 单位
  湘潭大学