近日，四川大学任世杰团队报道了用于纳滤的界面傅克烷基化超交联微孔聚合物膜。相关论文发表在2026年2月9日出版的《中国化学》杂志上。

通过Friedel-Crafts烷基化制备的超交联聚合物因其丰富的孔道结构、低成本、易合成及优异的稳定性，作为吸附分离材料备受关注。

研究组采用外编织法，以多种芳香族单体为构筑单元，在聚偏氟乙烯基底膜上连续涂覆超交联聚合物层，制备了一系列复合膜。通过调控单体的交联位点数量及结构刚性，构建了不同结构的超交联聚合物，并系统研究了其对有机染料分离性能的影响。基于物理尺寸筛分与静电效应的协同作用，所制备的联苯基膜可有效截留甲基蓝、刚果红、铬黑T及甲基橙等阴离子染料，截留率超过99%，水通量高达30.2 L·m^-2·h^-1·bar^-1。该研究提出了一种通过界面聚合在基底膜上均匀生长功能性超交联聚合物层的有效方法，为构建用于有机污染物处理的纳滤膜提供了简便通用的制备途径。

附：英文原文

Title: Hypercrosslinked Microporous Polymer Membranes from an Interfacial Friedel–Crafts Alkylation for Nanofiltration†

Author: Jiarui Song, Xue Gong, Wencui Liang, Hao Ling, Xiaobing Zhang, Jiao Zhou, Hongxu Liu, Shijie Ren

Issue&Volume: 2026-02-09

Abstract: Hypercrosslinked polymers (HCPs) from Friedel–Crafts alkylation have attracted significant attention as promising materials for adsorption and separation due to their abundant porosity, low cost, ease of preparation, and excellent stability. Here, we fabricated a series of composite membranes coated with continuous HCP layers on polyvinylidene fluoride (PVDF) film substrates, using various aromatic monomers as building blocks via an external braiding method. Different HCP structures were constructed by tuning the number of crosslinking sites on the monomers and their structural rigidity, and their effects on organic dye separation were systematically investigated. Benefiting from both physical size sieving and electrostatic effects, the prepared biphenyl-based membranes can effectively block anionic dyes, such as methyl blue, Congo red, Eriochrome black T and methyl orange, achieving a rejection rate exceeding 99% and a water flux of up to 30.2 L·m–2·h–1·bar–1. This study presents an efficient method to uniformly grow hypercrosslinked functional HCP layers on substrate membranes via interfacial polymerization, offering a versatile and straightforward approach to fabricating nanofiltration membranes for the treatment of organic pollutants.

DOI: 10.1002/cjoc.70479

Source: https://onlinelibrary.wiley.com/doi/10.1002/cjoc.70479