The nitrile groups in the tetrafluoroterephthalonitrile-crosslinked β-cyclodextrin (β-CD) were modified by (1) the reaction with the diethanolamine resulting in the hydroxyalkylaminoalkylamide groups or the hydroxyalkylaminoimide groups (2) the reduction of the borane-tetrahydrofuran complex resulting in the amide groups to form two novel β-CD based polymers (CDPs), namely the CDP-DEA and the CDP-NH₂, correspondingly. Furthermore, the dye adsorption abilities of these two CDPs in the aqueous solution were investigated using the anionic dyes including the Congo red (CR) and the orange G (OG). For both the CDP-DEA and the CDP-NH₂, the pseudo second-order model fitted well with their adsorption dynamics and their equilibrium adsorption process followed the Langmuir isotherm model. The maximum adsorption capacities of the CDP-DEA for CR at pH = 5 and OG at pH = 3 were 813 mg/g and 442 mg/g, respectively, while the corresponding values of the CDP-NH₂ were 40 mg/g and 446 mg/g, respectively. It was found that the electrostatic attraction played an important role in the anionic dye adsorption of the CDP-DEA and the CDP-NH₂.

四氟对苯二甲腈交联的β-环糊精（β-CD）中的腈基是通过（1）与二乙醇胺的反应生成羟基烷基氨基烷基酰胺基团或羟基烷基氨基酰亚胺基团进行修饰的（2）硼烷-四氢呋喃配合物的还原酰胺基团分别形成两个新的基于β-CD的聚合物（CDP），即CDP-DEA和CDP-NH ₂。此外，使用包括刚果红（CR）和橙色G（OG）的阴离子染料研究了这两种CDP在水溶液中的染料吸附能力。对于CDP-DEA和CDP-NH ₂，伪二阶模型很好地拟合了它们的吸附动力学和平衡吸附过程，遵循了Langmuir等温模型。CDP-DEA在pH = 5时的CR和OG在pH = 3时的最大吸附容量分别为813 mg / g和442 mg / g，而CDP-NH ₂的相应值为40 mg / g和。分别为446 mg / g。发现静电吸引在CDP-DEA和CDP-NH ₂的阴离子染料吸附中起重要作用。