In order to investigate the relationship towards cationic structures and ion exchange membrane performance, three kinds of twisted poly(terphenylene)-based anion membranes (AEMs) with N-cyclic cations were prepared via facile Friedel-Crafts type polycondensation quaternization. The steric hindrance is gradually increased from small piperidinium sterically protected N-spirocyclic quaternary ammo...

This study represent the synthesis and electrical conductivity of two focused dicationic pyridinium ionic liquids (DiILs) carrying tetrafluoroborate and/or hexafluorophosphate as counter anion. Thus, required quaternization pyridine nitrogen atoms first, followed by a metathetical exchange reaction to produce task-specific ILs bearing anions. The resulting DiILs were characterized NMR MS spectr...

A series of 1,2,3-triazolium-functionalized cellulose derivatives were prepared using an azide–alkyne “click” cyclization strategy, followed by quaternization. As represents inexpensive and sustainable biomacromolecule, the ability to functionalize backbone with ionic liquid generate conductive materials is great interest. Here, three different counteranions ([Br], [OTf], [NTf2]) employed explo...

The diffusion and transport of substances between a hydrogel and its environment have received tremendous research interest, due to the wide range of applications of hydrogel materials in fields related to drug carriers and drug delivery vehicles. To date, much research has been done to tailor the diffusion and transport of substances through hydrogels, where most efforts were focused on tuning...

We report on the grafting of coumarin chromophores on flat silicon surfaces and in regions of nanometric dimensions drawn on silicon surfaces. The coumarin derivative was grafted by using the quaternization of a tertiary amine group of the chromophore with a ((chloromethyl)phenylethyl)-dimethylchlorosilane (CMPDCS) grafted on silicon. Complete characterization of the grafted layer was performed...

Biofilm is a significant cause for membrane fouling. Antibacterial-coated surfaces can inhibit biofilm formation by killing bacteria. In this study, polyethersulfone (PES) microfiltration membrane was photografted by four antibiotic quaternary ammonium compounds (QACs) separately, which were synthesized from dimethylaminoethyl methacrylate (DMAEMA) by quaternization with butyl bromide (BB), oct...