Preparation of chiral polymers: precise chirality transfer from natural species to achiral artificial polymers

Giant, Journal Year: 2023, Volume and Issue: 14, P. 100161 - 100161

Published: April 27, 2023

The synthesis of chiral substances, especially polymers is currently one the hottest issues in field materials and chemistry due to their unique structural characteristics potential applications. However, acquisition by chemical or asymmetric catalysis may often involve expensive reagents tedious routes. types substances nature are undoubtedly limited. Except for design compounds, utilizing external stimulus factors induce chirality achiral a promising approach. Inspired nature, researchers tend rational interaction systems that attempt precisely transfer information from natural species artificial polymers, which has been proven be an excellent method construct macro-molecular/supramolecular polymer systems. In this review, account typical development naturally occurring including dopants, solvents, summarized. Finally, we further briefly introduce future scope, opportunities, challenges developing novel functional polymeric materials.

Language: Английский

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Self-recovery of chiral microphase separation in an achiral diblock copolymer system

Chemical Science, Journal Year: 2023, Volume and Issue: 14(7), P. 1673 - 1678

Published: Jan. 1, 2023

Macroscopic regulation of chiral supramolecular nanostructures in liquid-crystalline block copolymers is great significance photonics and nanotechnology. Although fabricating helical phase structures via doping microphase separation has been widely reported, the memory self-recovery capacity asymmetric are major challenge still deeply rely on presence additives. Herein, we demonstrate first controllable an achiral amphiphilic copolymer consisting poly(ethylene oxide) azobenzene (Azo) groups. Chirality can be transferred to fabricated by with additives (tartaric acid, TA). After removal then performing cross-linking, formed will completely dispense source. The chirality micron-scale structure maintained under UV irradiation heating-cooling treatment, enabling a reversible "on-off" chiroptical switch feature. This work expected avoid tedious synthesis expensive raw materials shows application prospect so on.

Language: Английский

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Chiroptical Generation, Switching, and Long‐Term Memory in Supramolecular Azobenzene‐Pendant Polymer: Regulation by Cellulose Peralkyl Esters, D‐/L‐Glucose Permethyl Esters, Solvents, UV Light Irradiation, and Thermal Annealing Process^†

Chinese Journal of Chemistry, Journal Year: 2023, Volume and Issue: 41(24), P. 3625 - 3632

Published: July 31, 2023

Comprehensive Summary Various optically active polymers are known to afford sophisticated chirality‐related functionalities, i.e ., asymmetric catalysis, chiroptical switching and memory in UV‐vis‐NIR region, chromatographic separation of enantiomers, sensors for molecular chirality. Recently, material researchers have paid much attention the design chiral supramolecular architectures from achiral upon intermolecular interactions with help greener biosources. The present article reports an instantaneous generation ambidextrous supramolecules revealing light‐driven switching/memory UV‐vis region when azobenzene‐containing vinylpolymers non‐covalently interacted alkyl ester derivatives natural cellulose D ‐/ L ‐glucose. It was recognized that semi‐synthetic biomaterials efficiently work as chirality‐inducing scaffoldings several inactive molecules, oligomers, polymers. Our successful results shed light on a new approach how inexpensive poly‐/mono‐saccharide can systems azobenzene pendant polymer aggregates suspension liquid‐crystalline films minimal energy, time, cost.

Language: Английский

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Chiroptical Generation, Switching, and Long-Term Memory in Supramolecular Azobenzene-Pendant Polymer: Regulation by Cellulose Peralkyl Esters, D-/L-Glucose Permethyl Esters, Solvents, UV Light Irradiation, and Thermal Annealing Process

Authorea (Authorea), Journal Year: 2023, Volume and Issue: unknown

Published: June 27, 2023

Various optically active polymers are known to afford sophisticated chirality-related functionalities, i.e. asymmetric catalysis, chiroptical switching and memory in UV-vis-NIR region, chromatographic separation of enantiomers, sensors for molecular chirality. Recently, material researchers received much attention design chiral supramolecular architectures from achiral upon intermolecular interactions with help greener biosources. The present article reports an instantaneous generation ambidextrous supramolecules revealing light-driven switching/memory UV-vis region when azobenzene-containing vinylpolymers non-covalently interacted alkyl ester derivatives natural cellulose D-/L-glucose. It was recognized that the semi-synthetic biomaterials efficiently work as chirality-inducing scaffoldings several inactive molecules, oligomers, polymers. Our successful results shed light on a new approach how inexpensive poly-/mono-saccharide can systems azobenzene pendant polymer aggregates suspension liquid-crystalline films minimal energy, time, cost.

Language: Английский

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Editorial of Special Issue “The Self-Assembly and Design of Polyfunctional Nanosystems 2.0”

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(8), P. 4437 - 4437

Published: April 18, 2022

The intention of this Special Issue, entitled “The Self-Assembly and Design Polyfunctional Nanosystems 2 [...]

Language: Английский

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