Achieving high circularly polarized luminescence with push–pull helicenic systems: from rationalized design to top-emission CP-OLED applications

• DOI: 10.1039/d0sc06895k
• Publication Date: 2021-03-02T08:40:16Z
• Authors: Kais Dhbaibi; Laura Abella; Sylvia Meunier-De...; Thierry Roisnel; Nicolas Vanthuyne; Bassem Jamoussi; Grégory Pieters; Benoît Racine; Etienne Quesnel; Jochen Autschbach; Jeanne Crassous; Ludovic Favereau
• Keywords: Luminescence process; Dipole transition moment; Luminescence; Excited states; 540; 01 natural sciences; Molecular orientation; 0104 chemical sciences; Organic light emitting diodes (OLED); Chiroptical properties; Chemistry; Circularly polarized luminescence; Crucial parameters; Stereochemistry; [CHIM] Chemical Sciences; Theoretical investigations; Circular polarization; [CHIM]Chemical Sciences; Relative orientation; Mutual orientation

A CPL intensity of up to 3 × 10−2 is achieved in π-extended 6-helicene derivatives, owing to an intense helicene-mediated exciton coupling. Corresponding top-emission CP-OLEDs afforded a promising gEl of around 8 × 10−3.