Second generation phenylene dendrimer, 1,3,5-tris[4-(3,5-diphenylphenyl)phenyl]benzene, as a precursor of a new carbon material

A second generation phenylene dendrimer, viz. 1,3,5-tris[4-(3,5-diphenylphenyl)phenyl]benzene, was synthesized by cyclocondensation of 4-acetyl-3′,5′-diphenyl(biphenyl). This compound on heating to 600°C is transformed into substance possessing extremely heat-stable secondary structure. It retains the aromatic structure at this temperature and when heated to 1000°C is converted into material with graphite-like structure.