Fig. 2: Chemical structures of ADBNA & ν-DABNA style.

Molecular structures of the (A) azadiboranaphthoanthracenes (ADBNAs) and (B) N7,N7,N13,N13,5,9,11,15-octaphenyl-5,9,11,15-tetrahydro-5,9,11,15-tetraaza-19b,20b-diboradinaphtho[3,2,1-de:1′,2′,3′-jk]pentacene-7,13-diamine (ν-DABNA) style based Blue DB-MR-TADF emitters.