A Redox‐Responsive Complex System Based on 2 D Shape‐Persistent Cyclo[6]aramide and Ferrocenium

Abstract

Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under http://dx.

Construction of Oligorotaxanes with Hydrogen‐Bonded Aramide Macrocycles through Threaded Host‐Guest Complexation

“…[34] Benefiting from the pronounced "macrocyclic effect", a threaded [2]pseudorotaxane was formed in solution, which can be switched in an on-and-off fashion using AgPF 6 and tetrabutylammonium chloride. Apart from this, macrocycle 1 a could also recognize alkali metal ions, [35] oxidized ferrocene (Fc + ), [36] aromatic carbonium tropylium (Tr + ), [37] diquat cations, [38] imidazolium, [39] and cryptochiral amino acid derivatives, [40] and exhibit diverse applications in artificial ion channel, [41] supramolecular gels, [35] liquid crystals, [42] enzyme catalysis modulation, [43] and artificial molecular machines. [44] The use of H-bonded macrocycles for the template-directed synthesis of rotaxanes was initially demonstrated in 2017.…”

Ferrocene: an exotic building block for supramolecular assemblies

“…47 In an aqueous medium, C6A binds to both Fc and Fc + , with Fc + showing a stronger binding affinity compared to Fc. 6 Furthermore, several other hosts, such as cyclo[6]aramide, 48 [8]cycloparaphenylene (CCP) 49 and cyclobis(paraquat- p -phenylene) (CBPQT 4+ ), 50 have been very recently identified for Fc. Among all the macrocyclic hosts, CB7 exhibits the highest binding affinity for Fc.…”

Hydrogen-bonded aromatic amide macrocycles: synthesis, properties and functions

“…24c). 110 An intriguing variant of H-bonded aramide macrocycle 10 is heteroditopic macrocycle 55 . It is unique in the design of molecular structures for one binding site for a cation and the other binding site for a anion to be integrated into a single cavity simply by depleting several intramolecular hydrogen bonds through tailoring structural units.…”