标题：Side-chain polypseudorotaxanes by threading cucurbituril onto N′-3-vinylbenzyldiaminobutane dihydrochloride: Synthesis, characterization, and properties
作者：Yang, Hui ;Ma, Qiang ;Tan, Yebang
作者机构：[Yang, Hui ;Ma, Qiang ;Tan, Yebang ] Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Jinan 2501 更多
来源：Journal of Polymer Research
摘要：A pseudorotaxane monomer consisting of cucurbituril (CB) and N′-3-vinylbenzyldiaminobutane dihydrochloride (3VBCB) was prepared in aqueous solution. This monomer was then polymerized using potassium persulfate as the initiator to give side-chain polypseudorotaxanes (P3VBCB). The CB "beads" were localized on butyl units in side chains of P3VBCB. The hydrodynamic radius distribution of P3VBCB increased as the concentration of P3VBCB or NaCl increased. Interestingly, it was possible to control the threading and dethreading of CB onto the side chains of P3VBCB by adding Ba2+and SO42-. P3VBCB also showed pH-responsive behavior. Significantly, applying P3VBCB caused the Tmof λ-DNA to decrease from 59.5 C to 38 C by damaging the double-helix structure of λ-DNA. © 2013 Springer Science+Business Media Dordrecht.