2 4 5 6-tetra(9h-carbazol-9-yl)-1 3-dicyanobenzene July 8, 2019 16 32 64 128 2 4 5 6-tetra(9h-carbazol-9-yl)isophthalonitrile 1 2 3 5-tetrakis(carbazol-9-yl)-4 6-dicyanobenzene 1 2 4 5-tetrakis(4-carboxyphenyl)benzene
