Construction of Sub‐Nano Channels of Amino Pillar[6]arene Inspired Biomimetic Porous Roots for Specific Remove of Imazamox

The root ducts play an important role in the plant's transport of nutrients from the soil. Based on the selective transport characteristics of plant roots, amino pillar[6]arene bionic porous root sub-nano channel membrane were constructed to remove Imazamox. Imazamox (IM) is an effective imidazolinone herbicide frequently utilized in soybean fields to control a wide range of annual grasses and broad-leaved weeds. However, it is important to note that while IM is effective in controlling the growth of weeds, its residues can affect the plants that are later planted. Developing a material that can efficiently and selectively remove IM from the environment poses a significant challenge in the realm of agricultural residue removal. A layer-upon-layer covalent assembly was formed through the reaction of amino pillar[6]arene with terephthalaldehyde using an aldehyde-amine Schiff-base reaction. The cavity of amino pillar[6]arenal is used to realize the host-guest interaction of IM. This enabled the development of a membrane with high selectivity for the extraction and removal of IM. The removal rate is 4.66-21.91 times higher than that of other pesticide chemicals. The successful development of the highly selective porous root bionic membrane provides a broad prospect for its application and development in agricultural production.