Monofunctionalized pillar[5]arene-based stable [1]pseudorotaxane

Concentration-dependent supramolecular self-assembly of A1/A2-asymmetric-difunctionalized pillar[5]arene

“… 9,12 For example, monofunctionalized pillar[5]arene bearing imidazolium moiety that formed stable pseudo[1]rotaxane event at high concentration has been reported. 13 The concentration independent nature of self-inclusion was also shown with neutral mono-urea-functionalized pillar[5]arene, however in solid state formed double-threaded dimer. 14 In contrast, the concentration dependence behavior of pseudo[1]rotaxane was demonstrated using monofunctionalized pillar[5]arene derivative containing a viologen moiety, which self-complexation at low concentration, assembled into supramolecular daisy chain polymers and eventually organogels upon the increasing of its concentration.…”

Noncovalently bound and mechanically interlocked systems using pillar[n]arenes

“…In 2015, a photo-induced thiol–ene reaction was also used in the capping step to prepare [1]rotaxane-type SCM P30 with an imidazolium-containing side chain ( K a = 1.0 × 10 4 M −1 in CDCl 3 for a model system). 121…”

Convenient construction of unique bis-[1]rotaxanes based on azobenzene-bridged dipillar[5]arenes

“…Due to easily preparation and suitable cavity, functionalized pillar [5]arene was widely used as wheel component for constructing of the various interlocked molecules [41][42][43][44][45][46]. In the past few years, many elegant works on the construction of pseudo[1]rotaxanes and [1]rotaxanes have been developed on the basis of various mono-functionalized pillar [5]arenes [47][48][49][50][51][52][53]. In this respect, we also constructed a couple of pseudo[1]rotaxanes and [1]rotaxanes by using mono-functionalized pillar [5]arene derivatives [54][55][56][57][58][59][60][61][62][63][64].…”