Dual-Responsive Pseudorotaxane On the basis of a pH-Sensitive Pillararene and Its Application in the Fabrication of Metallosupramolecular Polypseudorotaxane
journal contributionposted on 30.03.2018, 14:19 by Danyu Xia, Liyun Wang, Xiaoqing Lv, Jianbin Chao, Xuehong Wei, Pi Wang
Metallosupramolecular polymer, an appealing polymeric material, plays important roles in many fields including catalysis, electrochemical devices, conducting materials and so on. As a class of metallosupramolecular polymers, metallosupramolecular polypseudorotaxane has attracted great attention not only because of its wide applications but also due to its facile synthesis which is by metal coordination between metal and macrocycle-based pseudorotaxane. The introducing of stimuli-responsive property into the metallosupramolecular polypseudorotaxane system will enrich their functionality. Herein, a triple stimuli-responsive metallosupramolecular polypseudorotaxane constructed by pillararene-based host–guest interaction and copper coordination. First, a new pH-sensitive pillararene host (H) was synthesized. An azastilbenzene derivative, trans- 4,4′-vinylenedipyridine (trans-G) was chosen as the guest molecule to construct a pseudorotaxane based on H and trans-G. The pseudorotaxane displayed pH- and photo- dual stimuli-responsiveness. Then the pseudorotaxane was used to construct a pH-, photo- and cyanide-triple stimuli-responsive metallosupramolecular polypseudorotaxane based on Cu(II) ion coordination.
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photostimuli-responsive metallosupramolecular polypseudorotaxanemetallosupramolecular polypseudorotaxanemetal coordinationpHelectrochemical devicesmetallosupramolecular polymersmacrocycle-based pseudorotaxanematerialhoststimuli-responsive propertycyanide-triple stimuli-responsive metallosupramolecular polypseudorotaxanecopper coordinationMetallosupramolecular Polypseudorotaxane Metallosupramolecular polymertranguest moleculemetallosupramolecular polypseudorotaxane system