A photoactivated chiral molecular clamp rotated by selective anion binding.

ABSTRACT: Developing chiral molecular platforms that respond to external fields provides opportunities for designing smart chiroptical materials. Herein, we introduce a molecular clamp whose chiral properties can be turned on by photoactivation. Selective anion binding achieves rational tuning of the conformations and chiroptical properties of the clamp, including circular dichroism and circularly polarized luminescence. Cyanostilbene segments were conjugated to chiral amines with a rotatable axis. Negligible chiroptical signals were significantly enhanced through a light illumination-induced isomerization. Binding with halide ions (F^-, Cl^- and Br^-) enables chiroptical inversion and subsequent amplification of the resulting opposite handedness state by photo treatmen

SUBMITTER: Liu Y 

PROVIDER: S-EPMC11388084 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature