Structure and properties of multibranched isophorone-based materials for organic light-emitting diodes

A family of isophorone-based multi-branched compounds have been designed and synthesized. Because of they have the same electron donor and acceptor, branch number and steric structure have become as the important factors that differentiate their photo-physical characters. This Letter shows that the single-branched dye has better electroluminescent properties than the multi-branched in solid film.