A chiral bipolar host for efficient solution-processed circularly polarized OLEDs via a chirality energy transfer process

Chiral bipolar hosts of ( R / S )- l -2mCPCN are synthesized, which show high S 1 /T 1 energy levels and clear circularly polarized luminescence. Solution-processable CP-OLEDs based on such chiral hosts were achieved via a chirality energy transfer process.