Preparation and properties of poly(arylene) containing Si unit-bridged diphenylamine

Si (monosilane, disilane, and disiloxane) unit-bridged diphenylamine-containing poly(arylene) PARs were prepared and properties of PARs were compared with the relative Si unit-bridged diphenylamine homopolymers. PARs were prepared by palladium-catalyzed polycondensation between Si unit-bridged diphenylamine and distannyl- or diboryl-aromatic compound. PAR with disiloxane unit-bridged diphenylamine was also prepared by oxidation of PAR with disilane unit-bridged diphenylamine. Optical properties and electrochemical properties of PAR depended on not only bridging Si unit but also introduced arylene unit.