Dibutyl phthalate (DBP) is a potential endocrine disrupting chemical present in the environment, and designing an adsorbent with its molecular imprints for selective removal is critical for purification of contaminated water and soil. Here, we report the α-cyclodextrin-based porous polymer with the molecular imprint of DBP that can be used for its selective removal. Synthesis of the molecularly imprinted polymer involves cross-linking of α-cyclodextrin under the host–guest complexation condition between α-cyclodextrin and DBP, where DBP governs the mutual orientation of cyclodextrin during the polymerization process. DBP is then removed after polymerization, and the resultant polymer with molecular imprints of DBP exhibit higher binding affinity toward DBP as compared to its nonimprinted counterpart with the imprinting factor of 2.6. The molecular imprinted poly-cyclodextrin can be used for selective removal of DBP in contaminated water in the presence of its structural analogues. This approach can be extended for preparation of molecular imprinted polymers for other endocrine disrupting chemicals.

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分子印迹聚环糊精用于选择性去除邻苯二甲酸二丁酯

邻苯二甲酸二丁酯（DBP）是一种潜在的破坏环境中存在的内分泌化学物质，设计具有分子印迹以选择性去除的吸附剂对于净化受污染的水和土壤至关重要。在这里，我们报道了具有DBP分子印迹的基于α-环糊精的多孔聚合物，可用于选择性去除。分子印迹聚合物的合成涉及在α-环糊精和DBP之间的主体-客体络合条件下，α-环糊精的交联，其中DBP控制聚合过程中环糊精的相互取向。然后在聚合后除去DBP，与具有2.6印迹因子的非印迹对等物相比，具有DBP分子印迹的所得聚合物对DBP表现出更高的结合亲和力。分子印迹的聚环糊精可用于在存在结构类似物的情况下选择性去除污水中的DBP。这种方法可以扩展到制备用于其他内分泌干扰化学物质的分子印迹聚合物。