Shifting shades: A polymorph-driven luminescence modulation in a dual-state emissive organic luminophore

Key Points

• To explore the luminescence modulation properties of a dual-state emissive luminophore with a polymorphic structure.
• Characterization of the dual-state emissive luminophore DCZHPI containing a phenanthroimidazole core and carbazole substitutions.
• Investigation of the two polymorphs formed during the evaporation process.
• Identified two polymorphs of DCZHPI: DCZHPI-B and DCZHPI-G.
• Demonstrated how these polymorphs affect luminescence modulation.