Halogen and solvent effects induced structural transformation and isostructural luminescence regulation in copper-based hybrid halides

Phase transitions enabling subtle structural and compositional changes offer valuable insights into the luminescence regulation of metal halides. Herein, six copper-based hybrid halides were synthesized, achieving halogen and solvent induced structural transitions, along with luminescence transformations among identical structures through defect filling. These luminescence transitions endow them with suitable applications in anti-counterfeiting.