Synthesis and properties of triphenylamine- and 9-phenylearbazole-eored star-shaped terfluorenes: Understanding the effect of molecular dimensionality

Two star-shaped terfluorenes with either triphenylamine or 9-phenylcarbazole core structure with different dimensionality were synthesized. The optical, thermal, electrochemical, and electroluminescent properties were investigated in comparison with those of the low-dimensional linear counterparts. Strong correlation between the molecular dimensionality and associated optoelectronic properties was demonstrated.