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Ring-opening supramolecular polymerization controlled by orthogonal non-covalent interactions

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Abstract

The control of supramolecular polymerization is of high fundamental significance for understanding self-assembly processes at the nanoscale. It also remarkably affects the design and improves the efficiency of dynamic polymer materials. To this end, we have developed an effective strategy which employs a type of non-covalent interaction to orthogonally regulate the supramolecular polymerization driven by another non-covalent interaction. Specifically, we herein report the quadruple hydrogen bond-driven supramolecular polymerization controlled by the assistance of the π–π interaction. A series of aromatic group bridged ditopic ureidopyrimidinone (UPy) derivatives (M1, M2, and M3) were designed and successfully synthesized. These molecules could self-assemble into cyclic monomers or linear supramolecular polymers under different conditions via quadruple hydrogen bonding. By additionally introducing a π–π interaction into the cyclic monomers, which exists between the aromatic group and the dimerized UPy motifs, a ring-opening supramolecular polymerization process based on ring-chain equilibrium can be preliminarily controlled due to the adjustable strength of the π–π interaction. These findings could offer new perspectives into orthogonal self-assembly and provide model systems for the studies of fundamental supramolecular polymer physics.

Graphical abstract: Ring-opening supramolecular polymerization controlled by orthogonal non-covalent interactions

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Publication details

The article was received on 26 Feb 2019, accepted on 12 May 2019 and first published on 13 May 2019


Article type: Paper
DOI: 10.1039/C9PY00312F
Polym. Chem., 2019, Advance Article

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    Ring-opening supramolecular polymerization controlled by orthogonal non-covalent interactions

    T. Xiao, W. Zhong, L. Qi, J. Gu, X. Feng, Y. Yin, Z. Li, X. Sun, M. Cheng and L. Wang, Polym. Chem., 2019, Advance Article , DOI: 10.1039/C9PY00312F

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