In 2022,Gou, Wei Wei; Gao, Wei Ting; Gao, Xue Lang; Zhang, Qiu Gen; Zhu, Ai Mei; Liu, Qing Lin published an article in Journal of Membrane Science. The title of the article was 《Highly conductive fluorinated poly(biphenyl piperidinium) anion exchange membranes with robust durability》.COA of Formula: C6H11NO The author mentioned the following in the article:
To prepare anion exchange membranes (AEMs) that possess an excellent alk. resistance, a competitive conductivity and a low swelling ratio (SR), a reasonable mol. structure design is particularly important. Herein, we synthesized ether-free fluoropolymers via a superacid catalyzed polyhydroxyalkylation reaction in one pot, and grafted long flexible multipiperidine cation side chains to different positions of the backbone through Menshutkin reaction. We investigated the effect of hydrophilic-hydrophobic polarity difference on the microphase separation When the ionic liquid is grafted closer to the fluorine-contained group, AEMs exhibit a more obvious microphase separated structure and larger ion clusters as confirmed by morphol. observation. Mol. dynamics simulations also confirmed that the construction of ion channels in PBPip-QAPBF-30% is more efficient than in QAPBPip-PBF-30%. The resulting PBPip-QAPBF-30% AEM exhibits the highest OH- conductivity of 156.4 mS cm-1 with a low SR of 12.9% at 80°C. The QAPBPip-PBF-30% and PBPip-QAPBF-30% AEMs both show an excellent alk. stability with the OH- conductivity retention of 93.2% and 95.0% correspondingly after being treated in a 2 M NaOH solution at 80°C for 1080 h. Moreover, the peak power d. of a single cell equipped with PBPip-QAPBF-30% reaches 324.5 mW cm-2 at a c.d. of 550 mA cm-2. In addition to this study using 1-Methyl-4-piperidone, there are many other studies that have used 1-Methyl-4-piperidone(cas: 1445-73-4COA of Formula: C6H11NO) was used in this study.
1-Methyl-4-piperidone(cas: 1445-73-4) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.COA of Formula: C6H11NO
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem