Binary Hybridization Strategy toward Stable Porphyrinic Zr‐MOF Encapsulated Perovskites as High‐Performance Heterogeneous Photocatalysts for Red to NIR Light‐Induced PET‐RAFT Polymerization. (19th September 2022)

• Record Type: Journal Article
• Authors: Xia, Zhinan; Shi, Bingfeng; Zhu, Wenjing; Xiao, Yang; Lü, Changli
• Is Part Of: Advanced functional materials. Volume 32:Number 47(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-09-19
• Subjects: hybrid photocatalysts -- metal–organic frameworks -- NIR light -- perovskites -- PET‐RAFT polymerization -- red light; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202207655
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Stable binary nanohybrids based on all‐inorganic halide perovskite encapsulated in porphyrinic Zr‐MOF (PCN‐222) are constructed for photoinduced electron transfer‐reversible addition‐fragmentation chain transfer (PET‐RAFT) polymerization. The synergistic effect of perovskite and PCN‐222 endows the photocatalyst with high‐efficiency photogenic charge carrier separation and light absorption property. CsPbI3 @PCN‐222 (20%) is finally screened out as the oxygen and solvent‐resistant photocatalyst for highly efficient photo‐controlled polymerization of conjugated and unconjugated monomers under red to near infrared (NIR) light with high monomer conversion and narrow molecular weight distribution well‐defined polymers (Đ < 1.20). Controllable polymers and ultrahigh molecular weight polymers (up to 1730000 g mol −1 ) are successfully obtained by chain extension and block copolymerization of various monomers. The constructed photocatalysts easily achieve excellent light and temporal control, and even show high MMA conversion with NIR light under a thick barrier. Abstract : A binary synergistic photocatalyst of perovskite@PCN‐222 with near infrared absorption is proposed for efficient PET‐RAFT polymerization. The CsPbI3 @PCN‐222(20%) with oxygen‐ and solvent‐resistant shows excellent recycle stability, and is suitable for rapid and controllable photopolymerization of various monomers under red to NIR light with high monomer conversion even under thick barriers.