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Novel affinity membranes with macrocyclic spacer arms synthesized via click chemistry for lysozyme binding
作者:Ligang Lin*, Hui Sun, Kaiyu Zhang, Yonghui Zhong, Qi Cheng, Xihui Bian, Qingping Xin, Bowen Chen
關鍵字:Affinity membrane, Cyclodextrin, Macrocyclic spacer arms, Bioseparation, Click chemistry
論文來源:期刊
具體來源:Journal of Hazardous Materials, 2017, 327, 97-107
發表時間:2017年
Affinity membrane has great potential for applications in bioseparation and purification. Disclosed herein is the design of a novel affinity membrane with macrocyclic spacer arms for lysozyme binding. The click able azide-cyclodextrin (CD) arms and clickable alkyne ethylene-vinyl alcohol (EVAL) chains are designed and prepared. By the azide-alkyne click reaction, the EVAL-CD-ligands affinity membranes with CD spacer arms in three-dimensional micro channels have been successfully fabricated. The FT-IR, XPS, NMR, SEM and SEM-EDS results give detailed information of structure evolution. The abundant pores in membrane matrix provide efficient working channels, and the introduced CD arms with ligands (affinity sites) provide supramolecular atmosphere. Compared with that of raw EVAL membrane, the adsorption capacity of EVAL-CD-ligands membrane (26.24 mg/g) show a triple increase. The study indicates that three effects (inducing effect, arm effect, site effect) from CD arms render the enhanced performance. The click reaction happened in membrane matrix in bulk. The effective lysozyme binding and higher adsorption performance of affinity membranes described herein compared with other reported membranes are markedly related with the proposed strategy involving macrocyclic spacer arms and supramolecular working channels.
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