Advance of click chemistry in anion exchange membranes for energy application

Abstract

Click chemistry has attracted tremendous attention in polymer synthesis due to its high efficiency, considerable yield, and simple synthesis/work-up procedures. Among the various functional polymer materials prepared by click chemistry, anion exchange membrane (AEM) is a kind of polyelectrolyte which contains cations attached to the polymer skeleton. Click chemistry not only provides facile pathways for the preparation of AEMs but also generates diverse architectures of AEMs with robust performance. The commonly used click chemistry in AEMs consists of: (i) Diels-Alder reaction, (ii) thiol-ene, and (iii) Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC). This review will focus on the advance of click chemistry in the preparation of AEMs, especially synthetic approaches for different AEMs and their corresponding application in energy-related fields, such as fuel cells, redox flow battery, electrodialysis, and so on.

Efficient Synthesis of High-Performance Anion Exchange Membranes by Applying Clickable Tetrakis(dialkylamino)phosphonium Cations

“…The Cu(I)-catalyzed alkyne–azide cycloaddition (CuAAC) “click” reaction is used in anion exchange membrane development for both the synthesis of cation-bearing monomers and the coupling of cations with polymer backbones [ 17 ]. Using clickable TKDAAP cations, it becomes easy to evaluate TKDAAP-based AEMs with various molecular structures, thus leading to clues on how to improve the performance of the resulting AEMs.…”

Post-Hydration Crosslinking of Ion Exchange Membranes to Control Water Content

“…In the present study, we utilize this validated HRCG model to perform in silico evaluation of a proposed polymer design concept. Our computer simulations study the effects of post-casting, partial-hydration crosslinking on the water uptake of PPO-TMA and assess the viability and advantages of strategies that crosslink the membrane through groups exposed to the hydrophilic channels vs nonspecific crosslinking of the polymer. − By analyzing the simulation outcomes, we propose a novel strategy for developing polyelectrolyte membrane materials.…”

Click chemistry: A fascinating, Nobel-winning method for the improvement of biological activity

“…In this context, the most popular and maybe the most striking topic, click chemistry consisting of several distinct chemical reactions (cycloadditions, additions to carbon-carbon multiple bonds, nucleophilic substitutions and carbonyl chemistry of non-aldol typed transformations) has been a significant totally approach for molecular design and synthesis emphasizing the construction of carbon-heteroatom (C−X−C) linkages in joining modular building blocks [4][5][6][7] . Comprising carbon-heteroatom bond formation rather than C−C bond reveals great potential of simplifying drug synthesis methods and so accelerating the drug discovery processes [8,9] .…”