Architecture transition of supramolecular polymers through hierarchical self-assembly: from supramolecular polymers to fluorescent materials

In this work, three different monomers AB2, C2, and TP4 were synthesized. AB2 + C2 could self-assemble to form a supramolecular hyperbranched polymer (SHP1) based on crown ether-based host-guest interaction. Upon adding TP4 into the solution of SHP1, SHP1 transformed into a higher molecular weight s...

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Bibliographic Details
Published in:Polymer chemistry 2020-09, Vol.11 (35), p.5642-5648
Main Authors: Li, Riqiang, Chen, Wenzhuo, Yang, Ying, Li, Hui, Xu, Fenfen, Duan, Zhaozhao, Liang, Tongxiang, Wen, Herui, Tian, Wei
Format: Article
Language:English
Subjects:
Crosslinking
Crown ethers
Emission
Fluorescence
Gels
Polymer chemistry
Self-assembly
Sol-gel processes
Supramolecular compounds
Supramolecular polymers
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Summary:In this work, three different monomers AB2, C2, and TP4 were synthesized. AB2 + C2 could self-assemble to form a supramolecular hyperbranched polymer (SHP1) based on crown ether-based host-guest interaction. Upon adding TP4 into the solution of SHP1, SHP1 transformed into a higher molecular weight supramolecular cross-linked polymer (SCP1), accompanied by a dramatic fluorescence emission enhancement due to the aggregation of the tetraphenyl ethylene core induced by supramolecular polymerization. A supramolecular gel with blue fluorescence emission was generated when the concentration of SCP1 exceeded 64 mM. Adding/removing K + or heating/cooling the gel could realize reversible gel-sol transition, accompanied by the decrease or enhancement of the fluorescence emission intensity. Moreover, the supramolecular gel with AIE properties showed excellent self-repairing capability. A new supramolecular crosslinked polymer and a gel with excellent self-repairing capability were prepared by double host-guest interactions.
ISSN:1759-9954
1759-9962
DOI:10.1039/d0py00829j