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

Stimuli-responsive synthetic helical polymers DOI Creative Commons
María Lago‐Silva, Manuel Fernández‐Míguez, Rafael Rodríguez

et al.

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 53(2), P. 793 - 852

Published: Dec. 18, 2023

Synthetic dynamic helical polymers (supramolecular and covalent) foldamers share the helix as a structural motif.

Language: Английский

Citations

54
Global advances and smart innovations in supramolecular polymers DOI
Mohammad Harun‐Ur‐Rashid, Israt Jahan, Md. Jahidul Islam

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1304, P. 137665 - 137665

Published: Feb. 3, 2024

Language: Английский

Citations

32
Chiral Macrocycles for Enantioselective Recognition DOI

Guang Sun,

Xue Zhang, Zhe Zheng

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 13, 2024

The efficient synthesis of chiral macrocycles with highly enantioselective recognition remains a challenge. We have addressed this issue by synthesizing pair macrocycles, namely,

Language: Английский

Citations

17
Chiral structures in azobenzene‐containing systems: Construction, regulation, and application DOI Creative Commons

Zixiang He,

Xiaoxiao Cheng, Zhao Wang

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(2)

Published: May 1, 2024

Abstract Chirality is a fundamental property in nature, which essential for the existence and survival of living organisms. Smart responsive chiroptical materials have garnered increasing attention due to their unique structural characteristics potential applications. Among these, azobenzene (Azo), as typical photoresponsive chromophore, plays crucial role constructing controlling chiral structures. The cis ‐ trans isomerization, liquid crystallinity, other physicochemical properties allow wide range tunability stimuli‐responsive materials. Herein, we review research studies field chiral/achiral Azo building blocks multilevel generation well switching, summarize recent advances on applications structures from micro macro levels. Finally, aim provide an overview challenges new opportunities development novel smart

Language: Английский

Citations

14
BINOL‐Based Chiral Macrocycles and Cages DOI

Yabing Yu,

Yaning Hu,

Chengbing Ning

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 6, 2024

Abstract Chirality, a fundamental principle in chemistry, biology, and medicine, is prevalent nature organisms. Chiral molecules, such as DNA, RNA, proteins, are crucial biomolecular synthesis, well the development of functional materials. Among these, 1,1′‐binaphthyl‐2,2′‐diol (BINOL) stands out for its stable chiral configuration, versatile functionality, commercial availability. BINOL widely employed asymmetric catalysis This review mainly focuses on recent research over past five years concerning use derivatives constructing macrocycles cages. Their contributions to luminescence, enantiomeric separation, transmembrane transport, were examined.

Language: Английский

Citations

13
Hierarchical chiral MOFs with the induced chirality of AIE ligands exhibiting non-reciprocal CPL DOI

Hong-Ru Fu,

Dan‐Dan Ren, Kun Zhang

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(48), P. 6182 - 6185

Published: Jan. 1, 2024

Two pairs of chiral MOFs, DCF-15/LCF-15 and DCF-16/LCF-16, were constructed through assembly achiral aggregation-induced emission (AIE)-type multidentate linkers (TPPE TPA) camphoric acid ( d / l -cam), exhibiting non-reciprocal CPL.

Language: Английский

Citations

7
Chiral carbonized polymer dots:A comprehensive review DOI

Hebing Pei,

Zengdong Zhang,

Meixuan Ouyang

et al.

Sustainable materials and technologies, Journal Year: 2025, Volume and Issue: 43, P. e01271 - e01271

Published: Jan. 31, 2025

Language: Английский

Citations

1
Frontiers in Bioinspired Polymer-Based Helical Nanofibers from Electrospinning DOI
Pengpeng Li, Jiahao Zhang, Xinlong Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Helices are among the most significant structures in nature, representing an emerging group of materials distinguished by their unique helical geometry. Recently, nanofibers have attracted considerable attention due to exceptional structural characteristics and versatile applications various fields, including tissue engineering, biomedicine, nanotechnology, chiral materials. Therefore, developing methods fabricate biomimetic fibers on demand, which can exhibit a diverse range physical properties forms, is great interest across multiple disciplines. Despite fibrous materials, fabrication such complex at micro- or nanoscale level remains major challenge. Electrospinning offers simple technique for producing shapes. This review systematically summarizes classifies state-of-the-art advancements electrospun into four categories based forming mechanisms: viscoelastic asymmetric contraction, bending instability motion, jet-induced buckling response, rotary winding molding. Additionally, recent these nanofibrous areas as environmental remediation, interactive textiles, biomedical engineering also summarized. Furthermore, current challenges future perspectives field put forward. We anticipate that insights provided will contribute rational design advanced artificial thereby enhancing practical future.

Language: Английский

Citations

1
Isothermal Phase Transitions in Liquid Crystals Driven by Dynamic Covalent Chemistry DOI Creative Commons
Daniel Martínez‐Villagrasa,

Tim Schlossarek,

Frank Würthner

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(26)

Published: April 18, 2024

The dynamic nature of calamitic liquid crystals is exploited to perform isothermal phase transitions driven by covalent chemistry. For this purpose, nematic (N) arrays based on aldehyde 1 were treated with different amines (A-E) in an on-surface process, which resulted transitions. These transformations caused situ imination reactions and are dependent the added amine. Transitions from N crystal (1A, 1E), isotropic (1B), smectic (Sm) (1C, 1D) phases achieved, while resulting materials feature thermotropic behavior. A sequential transformation Sm 1C then 1B was achieved coupling a transimination processes adjusting temperature. All these well characterized microscopic, spectroscopic, X-ray techniques, unlocking not only constitutional but also structural aspects This work provides new insights into designing constitutionally structurally adaptable systems, paving way toward conception programable evolutive pathways adaptive materials.

Language: Английский

Citations

6
Self-Sorting vs Coassembly in Peptide Amphiphile Supramolecular Nanostructures DOI
M. Hussain Sangji, Sieun Ruth Lee, Hiroaki Sai

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(24), P. 15878 - 15887

Published: June 7, 2024

The functionality of supramolecular nanostructures can be expanded if systems containing multiple components are designed to either self-sort or mix into coassemblies. This is critical gain the ability craft self-assembling materials that integrate functions, and our understanding this process in its early stages. In work, we have utilized three different peptide amphiphiles with capacity form β-sheets within found binary others was measured using atomic force microscopy reveal nanoscale morphology assemblies confocal laser scanning determine distribution fluorescently labeled monomers. We discovered PA opposite chirality self-sorted chemically distinct nanostructures. contrast, molecules formed a mixture right-handed, left-handed, flat on their own were able coassemble other molecules. attribute phenomenon energy barrier associated changing handedness β-sheet twist coassembly two observation could useful for designing biomolecular dual bioactivity interpenetrating networks assemblies.

Language: Английский

Citations

6