Dynamic Covalent Self-Sorting and Kinetic Switching Processes in Two Cyclic Orders: Macrocycles and Macrobicyclic Cages

Yang, Zhaozheng; Lehn, Jean‐Maríe

doi:10.1021/jacs.0c07131

Cited by 38 publications

(25 citation statements)

References 69 publications

(20 reference statements)

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“…Syntheses and characterizations of the investigated cages (see 1-4 in Figure 1) have been already reported [34,36,37,52]. For this work, Fura, m-xy, p-xy, and diphen were obtained following the procedure recently described by Lehn et al [34], using acetonitrile as the solvent for the synthesis.…”

Section: Syntheses and Characterization Of Cages 1-4mentioning

confidence: 93%

PEEK–WC-Based Mixed Matrix Membranes Containing Polyimine Cages for Gas Separation

et al. 2021

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Membrane-based processes are taking a more and more prominent position in the search for sustainable and energy-efficient gas separation applications. It is known that the separation performance of pure polymers may significantly be improved by the dispersion of suitable filler materials in the polymer matrix, to produce so-called mixed matrix membranes. In the present work, four different organic cages were dispersed in the poly(ether ether ketone) with cardo group, PEEK-WC. The m-xylyl imine and furanyl imine-based fillers yielded mechanically robust and selective films after silicone coating. Instead, poor dispersion of p-xylyl imine and diphenyl imine cages did not allow the formation of selective films. The H2, He, O2, N2, CH4, and CO2 pure gas permeability of the neat polymer and the MMMs were measured, and the effect of filler was compared with the maximum limits expected for infinitely permeable and impermeable fillers, according to the Maxwell model. Time lag measurements allowed the calculation of the diffusion coefficient and demonstrated that 20 wt % of furanyl imine cage strongly increased the diffusion coefficient of the bulkier gases and decreased the diffusion selectivity, whereas the m-xylyl imine cage slightly increased the diffusion coefficient and improved the size-selectivity. The performance and properties of the membranes were discussed in relation to their composition and morphology.

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Section: Syntheses and Characterization Of Cages 1-4mentioning

confidence: 93%

PEEK–WC-Based Mixed Matrix Membranes Containing Polyimine Cages for Gas Separation

et al. 2021

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“…metal organic complex | highly twisted metallacycle | self-assembly W eak intermolecular interactions play an essential role in the construction of well-defined hierarchical architectures with high complexity and functionality (1)(2)(3)(4). In nature, a complex interplay of units forms highly organized suprastructures (5).…”

mentioning

confidence: 99%

Anthracene-induced formation of highly twisted metallacycle and its crystal structure and tunable assembly behaviors

Chen

Sun

Zhao

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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Polycyclic aromatic hydrocarbons (PAHs) continue to attract increasing interest with respect to their applications as luminescent materials. The ordered structure of the metal−organic complex facilitates the selective integration of PAHs that can be tuned to function cooperatively. Here, a unique highly twisted anthracene-based organoplatinum metallacycle was prepared via coordination-driven self-assembly. Single-crystal X-ray diffraction analysis revealed that the metallacycle was twisted through the cooperation of strong π···π stacking interactions and steric hindrance between two anthracene-based ligands. Notably, the intramolecular twist and aggregation behavior introduced restrictions to the conformational change of anthracenes, which resulted in increased emission intensity of the metallacycle in solution. The emission behaviors and suprastructures based on the highly twisted metallacycle can be modulated by the introduction of different solvents. This study demonstrates that this metallacycle with highly twisted structure is a promising candidate for sensing and bioimaging applications.

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“…[ 19–21 ] Indeed, diverse studies applied synthetic molecular assemblies [ 22,23 ] and supramolecular systems to assemble dynamic networks [ 24–27 ] that mimic the functions of native systems. Dynamic assemblies revealing adaptive and hierarchically‐adaptive properties in response to auxiliary triggers [ 27–29 ] resulting in dictated structures [ 30–32 ] were demonstrated. Different stimuli, such as light, [ 33–34 ] temperature, [ 35 ] pH, [ 35 ] electrical field, [ 36 ] metal ions, [ 37–38 ] and supramolecular H‐bonds [ 39 ] were used to trigger synthetic networks, and diverse applications of such dynamic systems were suggested, including the dynamic formation of programmed structures, [ 40–42 ] temporal emergence and depletion of catalysts [ 43,44 ] or dictated material functions, such as hydrogels of controlled stiffness and porosity for controlled drug release.…”

Section: Introductionmentioning

confidence: 99%

Transient Out‐of‐Equilibrium Nucleic Acid‐Based Dissipative Networks and Their Applications

Wang

Willner

2022

Adv Funct Materials

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Dynamic, dissipative reactions play important roles in biological processes, and emulating such biological processes by artificial circuits and networks is a challenging topic in the area of Systems Chemistry. The present article summarizes efforts to apply the information encoded in the base sequence of nucleic acids to assemble transient, dissipative DNA‐based networks mimicking natural processes. The design principles of the transient nucleic acid‐based systems are introduced. Triggered reaction moduli lead to a transient intermediary constituent recovered to the parent moduli by enzymes, DNAzyme, or light as control units are described. Transient DNA‐based circuitries of enhanced complexities revealing temporal gated or cascaded transformations are demonstrated. Different applications of dynamically triggered transient circuits are introduced, including the temporal aggregation and deaggregation of plasmonic nanoparticles or semiconductor quantum dots and the control over their optical properties, the transient release and uptake of loads by aptamer scaffolds, and the transient reconfiguration of constitutional dynamic networks and the control over emergent catalytic functions. The future perspectives of dissipative nucleic acid‐based networks and their potential future applications are discussed.

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Dynamic Covalent Self-Sorting and Kinetic Switching Processes in Two Cyclic Orders: Macrocycles and Macrobicyclic Cages

Cited by 38 publications

References 69 publications

PEEK–WC-Based Mixed Matrix Membranes Containing Polyimine Cages for Gas Separation

PEEK–WC-Based Mixed Matrix Membranes Containing Polyimine Cages for Gas Separation

Anthracene-induced formation of highly twisted metallacycle and its crystal structure and tunable assembly behaviors

Transient Out‐of‐Equilibrium Nucleic Acid‐Based Dissipative Networks and Their Applications

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