Construction of Polypseudorotaxane from Low-Molecular Weight Monomers via Dual Noncovalent Interactions

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• 作者：Liangliang Zhu ; Meiqun Lu ; Qiwei Zhang ; Dahui Qu ; He Tian
• 刊名：Macromolecules
• 出版年：2011
• 出版时间：June 14, 2011
• 年：2011
• 卷：44
• 期：11
• 页码：4092-4097
• 全文大小：893K
• 年卷期：v.44,no.11(June 14, 2011)
• ISSN：1520-5835

文摘

The design and construction of polypseudorotaxanes via noncovalent interactions from low-molecular weight monomers (LMWMs) is playing an important role in the field of supramolecular polymers. In this work, we synthesized three low-molecular weight compounds for supramolecular polymerizations and attempted to employ the metal鈥搇igand interaction between the pyridine nitrogen and Pd (II), for cooperating with the host鈥揼uest binding between azobenzene and 尾-cyclodextrin (尾-CD), to complete the end-to-end connection of the polymer chains. Routes for stepwise introduction of two of the self-assembly behaviors as well as a one-pot preparation were investigated by ¹H NMR and 2D nuclear Overhauser enhancement spectroscopy (NOESY) ¹H NMR spectroscopy. The self-assembly strategies based on the full orthogonality of both noncovalent interactions will allow for a smart and rapid synthesis of precise structural controlled supramolecular polymeric assemblies.