A Noncovalent π‐Stacked Dual‐Pore Molecular Crystal for Ethanol/Water and Benzene/Methanol Azeotrope Separation DOI Open Access
Meng Xiang,

Shuixiang Zou,

Jiawei Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Separation of ethanol/water or benzene/methanol azeotrope mixtures presents significant challenges, not only due to the limitations conventional distillation techniques but also because constraints in developing and utilizing new generation adsorbents. Porous organic molecular frameworks constructed via noncovalent π-interactions are emerging as novel adsorbents with vast potential gas adsorption separation. Herein, we report a permanent two-dimensional porous structure, namely TDTBA-1, which consists two different kinds pores through π-stacking single molecule highly T

Language: Английский

Precise Assembly/Disassembly of Homo-Type and Hetero-Type Macrocycles with Photoresponsive and Non-Photoresponsive Dynamic Covalent Bonds DOI

Junmiao Deng,

Hanwei Lu, Hebo Ye

et al.

Organic & Biomolecular Chemistry, Journal Year: 2025, Volume and Issue: 23(10), P. 2498 - 2509

Published: Jan. 1, 2025

Dynamic covalent macrocycles offer the advantage of tunable ring-opening/ring-closure and structural transformation, but their control with precision remains a daunting task due to labile nature reversible bonds. Herein we demonstrate precise formation/scission varied sizes by contrasting reactivity, stability, degradability light-active light-inactive dynamic The incorporation photoswitchable non-photoresponsive aldehyde sites into one single dialdehyde component afforded creation [1 + 1] type primary diamines suitable lengths. manipulation light acid/base stimuli allowed on-demand breaking/remaking macrocycles, achieving interconversion between macrocyclic linear skeletons. Moreover, combination dialdehyde, diamines, secondary enabled construction hetero-type [2 1 1'] via enhanced discrimination hierarchical assembly. Light-induced kinetic locking/unlocking bonds further macrocycle-to-macrocycle conversion when needed. Through leveraging controllable connection/disconnection, switchable formation/disintegration mechanically interlocked catenanes was accomplished. results described showcase potential photoinduced chemistry for preparing complex architectures should set stage molecular recognition, assemblies, synthetic motors, responsive materials.

Language: Английский

Citations

0
Chiral Reticular Chemistry toward Functional Materials Discovery and Beyond DOI Creative Commons
Wei Gong, Yifei Gao, Jinqiao Dong

et al.

Accounts of Materials Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Language: Английский

Citations

0
Racemic Assembly of Octahedral Metallomesogens via Δ−Λ Chiral Interaction: Detection of Novel VCD Signals in Quasi‐Racemate DOI Open Access

Hideyo Yoshida,

K. Nishimoto,

Hidetaka Yuge

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Abstract The liquid crystalline columnar assemblies have been developed by using racemic metal complexes with Δ, Λ chirality ( M‐C8 , M = Ru or Ir) as mesogens. A exhibits rectangular (Col r ) and hexagonal h phases upon cooling from their isotropic phases, which are analyzed the combination of grazing‐incidence X‐ray diffraction (GI‐XRD) measurements molecular dynamics (MD) simulation. In Col phase, lattice parameter a 3.2 nm, single molecules proposed to stack form columns. By contrast, large dimensions 12.4 nm b 2.6 is formed in phase. MD simulations demonstrated that two columns, each alternating stacking Δ isomers, pair subsequently assembles construct lattice. paired columns separate into individual phase at higher temperature, column behaving independently. quasi‐racemic assembly Δ‐ Ru‐C8 Λ‐ Ir‐C8 vice versa further prepared via Δ−Λ interaction. It found same structure rac ‐ exhibit different vibrational circular dichroism (VCD) signals enantiomers.

Language: Английский

Citations

0
A Noncovalent π‐Stacked Dual‐Pore Molecular Crystal for Ethanol/Water and Benzene/Methanol Azeotrope Separation DOI
Meng Xiang,

Shuixiang Zou,

Jiawei Li

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Abstract Separation of ethanol/water or benzene/methanol azeotrope mixtures presents significant challenges, not only due to the limitations conventional distillation techniques but also because constraints in developing and utilizing new generation adsorbents. Porous organic molecular frameworks constructed via noncovalent π‐interactions are emerging as novel adsorbents with vast potential gas adsorption separation. Herein, we report a permanent two‐dimensional porous structure, namely TDTBA‐1 , which consists two different kinds pores through π‐stacking single molecule highly T d symmetry. Activated exhibits excellent hydrophobicity, thermal stability, recoverability high selectivity for ethanol over water, benzene methanol. Therefore, activated can be used an efficient stationary phase separation azeotropes by high‐resolution chromatography.

Language: Английский

Citations

0
A Noncovalent π‐Stacked Dual‐Pore Molecular Crystal for Ethanol/Water and Benzene/Methanol Azeotrope Separation DOI Open Access
Meng Xiang,

Shuixiang Zou,

Jiawei Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Separation of ethanol/water or benzene/methanol azeotrope mixtures presents significant challenges, not only due to the limitations conventional distillation techniques but also because constraints in developing and utilizing new generation adsorbents. Porous organic molecular frameworks constructed via noncovalent π-interactions are emerging as novel adsorbents with vast potential gas adsorption separation. Herein, we report a permanent two-dimensional porous structure, namely TDTBA-1, which consists two different kinds pores through π-stacking single molecule highly T

Language: Английский

Citations

0