Chiroptical switching in the azobenzene‐based self‐locked [1]rotaxane by solvent and photoirradiation
Xin Song, Xuefeng Zhu, Shengfu Wu, Wenzhuo Chen, Wei Tian, Minghua Liu
Abstract
Because of its dynamic reversible nature and simple regulation properties, rotaxane systems provided a good route for the construction of responsive supramolecular chiral materials. Here, we covalently encapsulate the photo-responsive guest molecule azobenzene (Azo) in a chiral macrocycle β-cyclodextrin (β-CD) to prepare self-locked chiral [1]rotaxane [Azo-CD]. On this basis, the self-adaptive conformation of [Azo-CD] was manipulated by solvent and photoirradiation; meanwhile, dual orthogonal regulation of the [1]rotaxane chiroptical switching could also be realized.
Topics & Concepts
RotaxaneAzobenzeneChemistrySupramolecular chemistryPhotoisomerizationCovalent bondCyclodextrinSolventMoleculeDynamic covalent chemistryPhotochemistrySelf-assemblyIsomerizationOrganic chemistryCatalysisSupramolecular Chemistry and ComplexesLuminescence and Fluorescent MaterialsSynthesis and Properties of Aromatic Compounds