From a single helix to a helical porous metalloenzyme catalyst based on temperature sensitive polyionic liquids. Issue 33 (5th August 2022)

• Record Type: Journal Article
• Authors: Li, Xinjuan; Zhou, Zhangquan; Dong, Jiaxin; Sun, Yanping; Ma, Guanglei; Wei, Qingcong; Ma, Nana; Jia, Xianbin
• Is Part Of: Polymer chemistry. Volume 13:Issue 33(2022)
• Page Start: 4789
• Page End: 4797
• Publication Date: 2022-08-05
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/d2py00616b
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : It is a challenging task to construct helical structures through the assembly of achiral polymers. Abstract : It is a challenging task to construct helical structures through the assembly of achiral polymers. Here, we synthesized a series of temperature sensitive polyionic liquids with different counterions. Polyionic liquids with an asymmetric structure assemble from micelles to a single helical structure with the increase of temperature. With the PIL as the soft template, Pd(oac)2 served as a crosslinking agent to further induce aggregation, and a helical porous polymer network was formed through multiple non-covalent bond forces. The resulting composite catalysts had high stability, a high specific surface area and amphiphilicity. The catalysts could catalyze Suzuki coupling and a one-pot Suzuki–Knoevenagel reaction in water with high efficiency, and the catalytic activity was not significantly reduced after it was recycled 10 times. PILs have multiple functions, including a micelle effect, solvent effect, activated catalyst, and self-catalysis. This study successfully provides a simple and green method for the design and synthesis of highly efficient and recyclable metal–enzyme catalysts and further promotes the development of multi-dimensional helical materials.