Assembling Phenothiazine into a Porous Coordination Cage to Improve Its Photocatalytic Efficiency for Organic Transformations. Academic Article uri icon

abstract

  • Photo-catalysis by small-molecules is often limited by catalyst degradation and low electron-transfer efficiency. Herein we report a stable N-phenyl-phenothiazine (PTH)-derived porous coordination cage (PCC) as a highly efficient photocatalyst. By the incorporation of the photocatalytic PTH moiety into a PCC, aggregation-induced quenching (AIQ) was shown to be reduced. An improvement in catalyst stability was discovered, ascribed to the synergistic effects of the PTH moieties. The catalyst, operating through a photolytic single-electron transfer, was utilized for photo-catalyzed dehalogenation and borylation. Evaluation of the catalytic mechanism in the borylation reaction showed that the improved performance results from the more efficient formation of the electron donor-acceptor (EDA) complex with the cage. This discovery provides a potential strategy to improve the photophysical properties and stabilities of small-molecule organic photocatalysts via supramolecular chemistry.

published proceedings

  • Angew Chem Int Ed Engl

altmetric score

  • 2.85

author list (cited authors)

  • Lin, H., Xiao, Z., Le, K. N., Yan, T., Cai, P., Yang, Y., ... Zhou, H.

citation count

  • 1

complete list of authors

  • Lin, Hengyu||Xiao, Zhifeng||Le, Khoa N||Yan, Tian-Hao||Cai, Peiyu||Yang, Yihao||Day, Gregory S||Drake, Hannah F||Xie, Haomiao||Bose, Riya||Ryan, Conor A||Hendon, Christopher H||Zhou, Hong-Cai

publication date

  • December 2022

publisher