Herein, we report the synthesis and planar chiral properties of a pair water-soluble cationic pillar[5]arenes with stereogenic carbons. Interestingly, although units molecules were rotatable, only one diastereomer existed in water both cases. As new type source, these transmitted information from cavities to assembly extended π-conjugated compound, affording circularly polarized luminescence (CPL). The chirality transfer process resulting CPL extremely sensitive feed ratio owing combined...

Abstract Developing artificial ion transport systems, which process complicated information and step‐wise regulate properties, is essential for deeply comprehending the subtle dynamic behaviors of natural channel proteins (NCPs). Here a photo‐controlled logic‐gated K + based on single‐chain random heteropolymers containing molecular motors, exhibiting multi‐core processor‐like properties to control reported. Designed with oxygen, deoxygenation, different wavelengths light as input signals,...

The conformations and planar chirality of macrocyclic hosts are great importance because their large influence on the complexation abilities selectivities host molecules. Pillar[n]...

Chirality of host molecules can be induced and/or inverted by the guest molecules. However, adapting chirality hosts to length n-alkanes remains a great challenge because are neutral, achiral, and linear molecules, resulting in weak interaction with most compounds. Herein, we report system adapted n-alkane lengths, using pillar[5]arene-based macrocyclic host, S-Br, which contains five stereogenic carbons terminal bromine atoms on each rim. The electron-rich cavity S-Br could include...

Pillar[ n]arenes, which were first reported by our group in 2008, are promising macrocyclic compounds supramolecular chemistry. The simple, tubular, and highly symmetrical shape of pillar[ n]arenes has allowed various assemblies with well-defined structures to be constructed. pillar-shaped suitable for surface modification formation one-dimensional (1D) channels. regular polygonal prism organized contributes the construction assembled such as two-dimensional (2D) sheets three-dimensional...

Abstract Chirality transfer is widely observed in life processes, and many artificial chiral systems have been developed. In these systems, information transferred from inducers to acceptors by a direct induction process memorization process. We developed ternary nondirect based on pillar[5]arenes, which third factor was introduced as regulator. The planar chirality of an acceptor induced memorized inducer with precise control the period, feed sequence regulator affected behavior acceptor....

Abstract Artificial water channels mimicking natural aquaporins (AQPs) can be used for selective and fast transport of water. Here, we quantify the performances peralkyl‐carboxylate‐pillar[5]arenes dimers in bilayer membranes. They ≈10 7 molecules/channel/second, within one order magnitude rates AQPs, rejecting Na + K cations. The have a tubular structure, superposing pillar[5]arene pores 5 Å diameter with twisted carboxy‐phenyl 2.8 diameter. This biomimetic platform, variable pore...

Regulating the chirality of macrocyclic host molecules and supramolecular assemblies is crucial because often plays a role in governing properties these systems. Herein, we describe pillar[5]arene-based chiral nanotube formation via pre-regulation building blocks' chirality, which different from frequently used post-regulation strategies. The planar rim-differentiated pillar[5]arenes initially regulated by awakening further induction/inversion through stepwise achiral external stimuli....

Control of symmetry is fundamental in molecular design with aimed properties. Herein we report a set chiroptical C5 -symmetric molecules variable dipolar structures based on rim-differentiated cylindrical macrocycle, pillar[5]arene. Incorporation electron-withdrawing ester groups formed an explicit two-sided structure, leading to increase response wavelength and luminescence efficiency. On the other hand, measurement separated enantiomers revealed that such character diminished dissymmetry...

Chiral rotaxanes have attracted much attention in recent decades for their unique chirality based on interlocked structures. Thus, selective synthesis methods of chiral been developed. The introduction substituents with centers to produce diastereomers is a powerful strategy the construction rotaxanes. However, case small energy difference between diastereomers, diastereoselective extremely difficult. Herein, we report new rotaxane method using solid-phase [3]pseudorotaxane formation and...

During recent decades, methylene-bridged macrocyclic arenes have been widely used in supramolecular chemistry. However, their π-conjugations are very weak, as the methylene bridges disrupt electronic communication between π orbitals of aromatic units. Herein, we successfully synthesized a series silapillar[n]arenes (n = 4, 6, and 8) using silylene bridging. These showed enhanced conjugation compared with parent pillar[n]arenes because σ*−π* σ* (Si–C) π* benzenes. Owing to longer Si–C bond...

Chloride-π interaction along with lone-pair electrons-π interaction, hydrogen bonding and π-π stacking induced the hexameric assembly of parent macrocycle into a rectangular supramolecular cage in solid state.

Novel macrocyclic anion receptors based on the principle of anion-π interactions were reported. By means both post-macrocyclization modification protocol and stepwise fragment coupling approach, functionalized oxacalix[2]arene[2]triazines bearing two other electron-deficient (hetero)aromatic rings lower rim efficiently synthesized. The resulting oxacalix[2]arene[2]triazine macrocyclesadopt 1,3-alternate conformation, yielding therefore an expanded cavity or space consisting triazine...

Synthesis, structure, and fullerene-binding property of azacalix[6]aromatics were systematically studied. By means [3 + 3] [2 2 2] fragment coupling protocols, a number containing different combinations benzene, pyridine, pyrimidine rings various substituents on the bridging nitrogen atoms synthesized conveniently in moderate to good yields. The resulting macrocycles adopt solid state symmetric heavily distorted 1,3,5-alternate conformations depending aromatic building units, whereas,...

Abstract Supramolecular chemistry in confined spaces constructed from macrocyclic molecules has attracted much attention because it can utilize the specific binding properties of cavities. Herein we report preparation length‐controlled discrete tubular structures by homo‐/co‐assembly rim‐differentiated and peralkylamino‐substituted pillar[5]arenes via hydrogen bonds salt bridges. By dimerization trimerization, expanded tubes show a fivefold helical structure stepwise binding, respectively....

Controlling dynamic chirality and memorizing the controlled are important. Chirality memory has mainly been achieved using noncovalent interactions. However, in many cases, memorized arising from interactions is erased by changing conditions such as solvent temperature. In this study, planar of pillar[5]arenes was successfully converted into static introducing bulky groups through covalent bonds. Before groups, pillar[5]arene with stereogenic carbon atoms at both rims existed a pair...

A Y-shaped metallo-amphoteric monomer with cobaltocenium as the cation and sulfonyl anion was synthesized used to prepare corresponding metallo-polyampholyte hydrogel (PAH). The in amphoteric system its Y-shape may introduce tunable supramolecular interactions, providing regulation of hydration properties biomedical performance. Such metallo-PAH showed a higher water swelling ratio comparable mechanical performance comparison organic counterpart, polysulfobetaine methacrylate (SBMA-PAH)....

We have employed a selenium containing amphiphile to assist the formation of well-defined azacalixarene nanosheets, in which Se⋯N non-covalent interaction plays an important role.