近日，四川大学任世杰团队报道了Diels-Alder环加成取代基工程呋喃马来酰亚胺多孔有机聚合物高效吸附Cr（VI）。相关论文于2026年4月1日发表在《中国高分子科学杂志》上。

随着环境污染日益严重以及重金属离子带来的严峻威胁，开发对有毒金属物种具有高容量和高选择性的吸附剂引起了越来越多的关注。多孔有机聚合物（POPs）具有大比表面积、多样的构建单元和连接方式以及高度可调的结构，使其成为水净化领域极具前景的候选材料。

研究组通过呋喃-马来酰亚胺狄尔斯-阿尔德反应合成了三种带有不同取代基的POPs，并系统评估了它们对六价铬[Cr(VI)]的吸附性能。结果表明，三种POPs均在pH=1时表现出最高的Cr(VI)吸附量。动力学研究表明，吸附过程遵循拟二级动力学模型，而平衡数据能够很好地被Langmuir等温线描述，表明在均匀位点上发生单层吸附。在三种POPs中，含有供电子甲氧基的Por-OMe对Cr(VI)的吸附容量最高，达到697.4 mg/g。这些结果表明，呋喃-马来酰亚胺狄尔斯-阿尔德化学为构建功能性POPs提供了一种有效策略，而对骨架进行电子调控则是提升Cr(VI)吸附性能的一种可行方法。

附：英文原文

Title: Substituent-engineered Furan-Maleimide Porous Organic Polymers <italic style="font-style: italic">via</italic> Diels-Alder Cycloaddition for Efficient Cr(VI) Adsorption

Author: Jiao Zhou, Ao-Ming Jing, Long-Yu Li, Shi-Jie Ren

Issue&Volume: 2026-04-01

Abstract: With the increasing severity of environmental pollution and the severe threat posed by heavy metal ions, the development of adsorbents with high capacity and selectivity for toxic metal species has attracted increasing attention. Porous organic polymers (POPs) feature large surface areas, diverse building units and linkages, as well as highly tunable structures, making them promising candidates for water purification. In this work, three POPs bearing different substituents were synthesized via a furan-maleimide Diels-Alder reaction. Their adsorption performance toward hexavalent chromium [Cr(VI)] was systematically evaluated. The results show that all three POPs exhibited the highest Cr(VI) uptake at pH=1. Kinetic studies revealed that the adsorption process followed a pseudo-second-order kinetic model, while the equilibrium data were well described by the Langmuir isotherm, indicating monolayer adsorption on homogeneous sites. Among the three POPs, Por-OMe, which incorporated an electron-donating methoxy group, displayed the highest adsorption capacity for Cr(VI), reaching 697.4 mg/g. These results demonstrate that furan-maleimide Diels-Alder chemistry provides an effective strategy to construct functional POPs and that electronic modulation of the framework is a viable approach to enhance Cr(VI) adsorption performance.

DOI: 10.1007/s10118-026-3615-8

Source: https://www.cjps.org/en/article/doi/10.1007/s10118-026-3615-8/