Construction of supramolecular organic frameworks with reactive oxygen species enhancement properties for photocatalytic organic transformation.

• A novel triazine-based SOF was constructed based on the host-guest interaction. • The control of singlet oxygen and superoxide radical can be realized by using SOF as photosensitizers. • The singlet oxygen generated from SOF can be used for the photocatalytic oxidation of tricyclohexyl in water. • SOF can further be used for the promotion of the oxidative hydroxylation of arylboronic acids. The construction of supramolecular organic frameworks (SOFs) frequently leads to a substantial reduction in the efficiency of reactive oxygen species (ROS) generation. Hence, it is crucial to create and construct SOFs photocatalysts that have improved efficiency in generating ROS. In this research, we developed and produced a compound TN-3Ny, which is a derivative of 2,4,6-tri(pyridin-4-yl)-1,3,5-triazine. This compound has the ability to create a supramolecular organic framework known as TN-SOF when it interacts with cucurbit[8]uril (CB[8]). The TN-3Ny monomer demonstrates the capacity to produce singlet oxygen (1O 2) and superoxide anion radical (O 2 •−). The incorporation of CB[8] leads to significant improvement in the effectiveness of generating 1O 2 and O 2 •− during the formation of TN-SOF, owing to the confinement effect exerted by the macrocyclic host molecule and framework structure. Furthermore, the utilization of 1O 2 and O 2 •− was implemented to augment the photocatalytic oxidation process of tricyclohexyl phosphine and phenylboronic acid. The TN-SOF demonstrated superior photocatalytic activity compared to the TN-3Ny monomer due to its extraordinary ability to generate 1O 2 and O 2 •−. As a result, it achieved impressive yields of 91% for tricyclohexyl phosphine and 90% for phenylboronic acid in an aqueous solution through photocatalytic oxidation. This presents a novel approach for the development of photosensitizers based on SOFs as well as their application in photocatalysis. [Display omitted] [ABSTRACT FROM AUTHOR]