Zn–Porphyrin-Functionalized Hollow Microporous Organic Nanospheres and Their Application for the Oxidative Coupling of Thiols

Novel meso-tetraphenylporphyrin zinc(II) (ZnTPP)-functionalized hollow microporous organic nanospheres (ZnTPP@HMONs) are successfully prepared a via hyper-crosslinking-induced self-assembly strategy and following postcomplexation with zinc(II) ions using polylactide-b-polystyrene (PLA-b-PS) diblock copolymers and meso-tetraphenylporphyrin (H₂TPP) as precursors. The obtained ZnTPP@HMONs possess a micro/mesoporous structure, high special surface area, and robust organic framework. In particular, the inner hollow cavity in ZnTPP@HMONs catalyst can be beneficial to the diffusion of substrates and products. Therefore, the prepared ZnTPP@HMONs exhibit excellent catalytic performance and good reusability in the oxidative coupling of thiols.