Supramolecular Copolymer Constructed by Hierarchical Self-Assembly of Orthogonal Host–Guest, H-Bonding, and Coordination Interactions

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• 作者：Peifa Wei ; Xuzhou Yan ; Timothy R. Cook ; Xiaofan Ji ; Peter J. Stang ; Feihe Huang
• 刊名：ACS Macro Letters
• 出版年：2016
• 出版时间：June 21, 2016
• 年：2016
• 卷：5
• 期：6
• 页码：671-675
• 全文大小：354K
• 年卷期：0
• ISSN：2161-1653

文摘

Supramolecular copolymers with complex architectures and emergent functions constitute a class of challenging but enticing synthetic targets in polymer science. Individual building blocks can be tailored to endow a resulting supramolecular copolymer with increased structural and functional complexity. Herein, we describe the construction of a linear supramolecular copolymer comprising mechanically interlocked segments with hydrogen-bonding metallorhomboidal units. Specifically, a hierarchical supramolecular polymerization of a crown ether-based [2]rotaxane and a discrete organoplatinum(II) metallacycle driven by 2-ureido-4-pyrimidinone (UPy) quadruple hydrogen bonding provides the impetus for its formation. This system demonstrates enhanced structural complexity accessed by the unification of orthogonal noncovalent interactions: metal coordination, host–guest chemistry, and multiple hydrogen bonding interfaces.