文献类型：期刊文献

英文题名：Emulsion-Directed Synthesis of Poly-Porphyrin Nanoparticles as Heterogeneous Photocatalysts for PET-RAFT Polymerization

作者：Xie, Peng[1];Yan, Weifeng[1];Ji, Hongyu[1];He, Haochen[1];Zhang, Liangshun[1];Cao, Hongliang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：44

期号：20

外文期刊名：MACROMOLECULAR RAPID COMMUNICATIONS

收录：;EI(收录号：20233614682087);WOS:【SCI-EXPANDED(收录号:WOS:001058121200001)】；

基金：This work was supported by the Natural Science Foundation of Shanghai (18ZR1408300).

语种：英文

外文关键词：emulsion-directed synthesis; heterogeneous photocatalysts; PET-RAFT; porphyrin

摘要：Heterogeneous photocatalysts have attracted extensive attention in photo-induced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization due to their remarkable advantages such as easy preparation, tunable photoelectric properties, and recyclability. In this study, zinc (II) 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (ZnTAPP)-based poly-porphyrin nanoparticles (PTAPP-Zn) are constructed by an emulsion-directed approach. It is investigated as a heterogeneous photocatalyst for PET-RAFT polymerization of various methacrylate monomers under visible light exposure, and the reactions show refined polymerization control with high monomer conversions. Furthermore, it is demonstrated that the PTAPP-Zn nanoparticles with the larger pore size enhance photocatalytic activity in PET-RAFT polymerization. In addition, the capabilities of oxygen tolerance and temporal control are demonstrated and PTAPP-Zn particles can be easily recycled and reused without an obvious decrease in catalytic efficiency. Poly-porphyrin nanoparticles (PTAPP-Zn) are synthesized and employed as photoredox catalysts for the well-controlled photo-induced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization under visible light radiation.image