Institute for Ubiquitous Information Technology and Applications (UBITA) & Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 143-701, South Korea.
The Danish Polymer Centre, Department of Chemical and Biochemical Engineering Danmarks Tekniske Universitet (DTU), 2880 Kgs, Lyngby, Denmark.
Carbohydr Polym. 2015 Nov 20;133:221-8. doi: 10.1016/j.carbpol.2015.06.089. Epub 2015 Jul 10.
We present the synthesis of novel magnetic nanoparticles functionalized by benzene- and β-cyclodextrin-derivatized dextran. The grafting strategy was based on the [alkynyl-iron] cluster in the modified dextrans, which were prepared by click reaction from alkyne-modified dextran and benzyl azide or mono-6-O-deoxy-monoazido β-cyclodextrin. Characterization was then carried out by thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and vibrating sample magnetometry. Using the developed magnetic nanoparticles, the potential for removing polycyclic aromatic hydrocarbons such as phenanthrene and pyrene by sorption onto the nanomaterials was assessed. In the sorption, pi-stacking interactions of the benzene-derivatized dextran and host-guest chemistry of the β-cyclodextrin-derivatized dextran were considered to be significant. Furthermore, the polysaccharide derivative-coated magnetic adsorbents could be recovered by an external magnet for reuse.
我们提出了由苯和β-环糊精衍生化葡聚糖功能化的新型磁性纳米粒子的合成。接枝策略基于修饰葡聚糖中的[炔基-铁]簇，该簇是通过炔基修饰的葡聚糖与苯甲酰叠氮化物或单-6-O-去氧-单叠氮-β-环糊精的点击反应制备的。然后通过热重分析、傅里叶变换红外光谱、扫描电子显微镜、透射电子显微镜和振动样品磁强计进行了表征。使用开发的磁性纳米粒子，评估了通过吸附到纳米材料上去除多环芳烃（如菲和芘）的潜力。在吸附中，考虑了苯衍生化葡聚糖的π-堆积相互作用和β-环糊精衍生化葡聚糖的主客体化学。此外，多糖衍生物涂覆的磁性吸附剂可以通过外部磁铁回收以重复使用。
