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- Title
Chemoresponsive Supramolecular Polypseudorotaxanes with Infinite Switching Capability.
- Authors
Wu, Yitao; Shangguan, Liqing; Li, Qi; Cao, Jiajun; Liu, Yang; Wang, Zeju; Zhu, Huangtianzhi; Wang, Feng; Huang, Feihe
- Abstract
Chemoresponsive supramolecular systems with infinite switching capability are important for applications in recycled materials and intelligent devices. To attain this objective, here a chemoresponsive polypseudorotaxane is reported on the basis of a bis(p‐phenylene)‐34‐crown‐10 macrocycle (H) and a cyano‐substituted viologen guest (G). H and G form a [2]pseudorotaxane (H⊃G) both in solution and in the solid state. Upon addition of AgSF6, a polypseudorotaxane (denoted as [H⋅G⋅Ag]n) forms as synergistically driven by host–guest complexation and metal‐coordination interactions. [H⋅G⋅Ag]n depolymerizes into a [3]pseudorotaxane (denoted as H2⋅G⋅Ag2⋅acetone2) upon addition of H and AgSF6, while it reforms with successive addition of G. The transformations between [H⋅G⋅Ag]n and H2⋅G⋅Ag2⋅acetone2 can be switched for infinite cycles, superior to the conventional chemoresponsive supramolecular polymeric systems with limited switching capability.
- Subjects
SMART materials; SOLID solutions; SUPRAMOLECULAR polymers; SUPRAMOLECULAR chemistry
- Publication
Angewandte Chemie, 2021, Vol 133, Issue 36, p20150
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202107903