In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called High chemical stability anion exchange membrane based on poly(aryl piperidinium): Effect of monomer configuration on membrane properties, published in 2021-05-20, which mentions a compound: 111-18-2, mainly applied to polytriphenyl piperidine based anion exchange membrane preparation, SDS of cas: 111-18-2.
In recent years, ether-free polyaryl polymers prepared by superacid-catalyzed Friedel-Crafts polymerization have attracted great research interest in the development of anion exchange membranes(AEMs) due to their high alkali resistance and simple synthesis methods. However, the selection of monomers for high-performance polymer backbone and the relationship between polymer structure construction and properties need further investigated. Herein, a series of free-ether poly(aryl piperidinium) (PAP) with different polymer backbone steric construction were synthesized as stable anion exchange membranes. Meta-terphenyl, p-terphenyl and diphenyl-terphenyl copolymer were chosen as monomers to regulate the spatial arrangement of the polymer backbone, which tethered with stable piperidinium cation to improve the chem. stability. In addition, a multi-cation crosslinking strategy has been applied to improve ion conductivity and mech. stability of AEMs, and further compared with the performance of uncrosslinked AEMs. The properties of the resulting AEMs were investigated and correlated with their polymer structure. In particular, m-terphenyl based AEMs exhibited better dimensional stability and the highest hydroxide conductivity of 144.2 mS/cm at 80°C than other membranes, which can be attributed to their advantages of polymer backbone arrangement. Furthermore, the hydroxide conductivity of the prepared AEMs remains 80%-90% after treated by 2 M NaOH for 1600 h, exhibiting excellent alk. stability. The single cell test of m-PTP-20Q4 exhibits a maximum power d. of 239 mW/cm2 at 80°C. Hence, the results may guide the selection of polymer monomers to improve performance and alk. durability for anion exchange membranes.
In some applications, this compound(111-18-2)SDS of cas: 111-18-2 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica