Chrysene‐Based blue Emitters

Chrysene and its bisbenzannulated homologue, naphtho[2,3-c]tetraphene, were synthesized via a PtCl2 catalyzed cyclization of alkynes, which also furnished corresponding biaryls subsequent to a Glaser coupling reaction of the starting alkynes. The optoelectronic properties of 5,5'-bichrysenyl and 6,6'-binaphtho[2,3-c]tetraphene were compared to their chrysene-based "monomers". Oxidative cyclodehydrogenations of bichrysenyl and its higher homologue towards large nanographenes were also investigated.