Architecture transition of supramolecular polymers through hierarchical self-assembly: from supramolecular polymers to fluorescent materials. Issue 35 (5th August 2020)

• Record Type: Journal Article
• Authors: Li, Riqiang; Chen, Wenzhuo; Yang, Ying; Li, Hui; Xu, Fenfen; Duan, Zhaozhao; Liang, Tongxiang; Wen, Herui; Tian, Wei
• Is Part Of: Polymer chemistry. Volume 11:Issue 35(2020)
• Page Start: 5642
• Page End: 5648
• Publication Date: 2020-08-05
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/d0py00829j
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : A new supramolecular crosslinked polymer and a gel with excellent self-repairing capability were prepared by double host–guest interactions. Abstract : 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.