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
- Shiyuan Yi,
- Laibing Wang,
- Xiaoxiao Cheng,
- Fujiki Michiya,
- Wei Zhang
Abstract
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, and sensors for molecular chirality.
Recently, material researchers are received much attention to design
chiral supramolecular architectures from achiral polymers upon
intermolecular interactions with help of greener biosources. The present
article reports an instantaneous generation of ambidextrous
supramolecules revealing light-driven chiroptical switching/memory in
UV-vis region when achiral azobenzene-containing vinylpolymers are
non-covalently interacted with alkyl ester derivatives of natural
cellulose and D-/L-glucose. It was recognized that the semi-synthetic
biomaterials efficiently work as chirality-inducing scaffoldings to
several achiral and optically inactive molecules, oligomers, and
polymers. Our successful results shed light on a new approach of how
inexpensive poly-/mono-saccharide derivatives can afford supramolecular
chiroptical systems with the azobenzene pendant polymer as aggregates in
suspension and liquid-crystalline films with minimal energy, time, and
cost.
26 Jul 20231st Revision Received 27 Jul 2023Submission Checks Completed
27 Jul 2023Assigned to Editor
27 Jul 2023Review(s) Completed, Editorial Evaluation Pending
27 Jul 2023Editorial Decision: Accept