Amphiphilic hyper-crosslinked porous cyclodextrin polymer (PBCD-B-D) with a surface area of 1445 m² g⁻¹ was synthesized for rapid removal of organic micropollutants. Partially benzylated cyclodextrin was crosslinked with 4,4'-bis(chloromethyl)-1,1'-biphenyl and α,α'-dichloro-p-xylene by the Friedel–Crafts alkylation reaction. The hydrophilicity of the PBCD-B-D surface is modulated by controlling the number of hydroxyl groups on cyclodextrin. Benzylation reaction is more likely to occur at the C-2 and C-6 positions of cyclodextrin hydroxyl groups according to Gaussian computation. Four different water-soluble pollutants (3-phenylphenol, 2-naphthol, p-nitrophenol, and 4-chlorophenol) were selected for adsorption study. The adsorption rate of PBCD-B-D is extremely high, and the removal efficiency reaches above 95% in 1 min. For the adsorption of 3-phenylphenol and 2-naphthol, the rate constants of PBCD-B-D are 827–1187 and 396–413 times larger than those of granular activated carbon (GAC) and β-cyclodextrin polymer crosslinked with epichlorohydrin (EPI-CDP), respectively. The adsorption capacity of PBCD-B-D is 2 and 4 times higher than that of GAC and EPI-CDP, respectively. The combination of cyclodextrin inclusion mechanism, hydrophobic attraction, and hydrogen bonding allows PBCD-B-D to adsorb both hydrophobic and hydrophilic pollutants. PBCD-B-D can be easily regenerated at room temperature using methanol as eluent. In addition, PBCD-B-D showed excellent adsorption performance towards mixed pollutants at environmentally relevant concentrations. According to the thermodynamic study, the adsorption of organic compounds onto PBCD-B-D belongs to physical adsorption and is spontaneous. PBCD-B-D is a potential novel adsorbent for water treatment owing to its excellent adsorption performance, low cost, and good regenerability.

表面积为1445 m ² g ^-1的两亲性超交联多孔环糊精聚合物（PBCD-BD）可以快速去除有机微量污染物。通过Friedel-Crafts烷基化反应，部分苄基化的环糊精与4,4'-双（氯甲基）-1,1'-联苯和α，α'-二氯-对二甲苯交联。PBCD-BD表面的亲水性通过控制环糊精上的羟基数来调节。根据高斯计算，在环糊精羟基的C-2和C-6位置更可能发生苯甲酰化反应。选择了四种不同的水溶性污染物（3-苯基苯酚，2-萘酚，对硝基苯酚和4-氯苯酚）进行吸附研究。PBCD-BD的吸附率极高，在1分钟内的去除率达到95％以上。对于3-苯基苯酚和2-萘酚的吸附，PBCD-BD的速率常数分别是与表氯醇交联的粒状活性炭（GAC）和β-环糊精聚合物的速率常数的827-1187和396-413倍。PBCD-BD的吸附能力分别是GAC和EPI-CDP的2和4倍。环糊精包合机理，疏水性吸引力和氢键的结合使PBCD-BD既可以吸收疏水性污染物也可以吸收亲水性污染物。使用甲醇作为洗脱液，PBCD-BD可以在室温下轻松再生。此外，PBCD-BD在环境相关浓度下对混合污染物表现出优异的吸附性能。根据热力学研究，有机化合物在PBCD-BD上的吸附属于物理吸附，是自发的。