Synthesis and Mesomorphic Property of Perylene Tetracarboxylic Bisimide Bearing Polymerizable Cyclotetrasiloxane Rings and a Triethylene Oxide Chain

Abstract

We have studied liquid-crystalline (LC) multifunctionalized semiconductors. We have already reported LC perylene tetracarboxylic bisimide (PTCBI) derivatives bearing oligosiloxane chains and a triethylene oxide chain complexing with metal ions. These LC compounds exhibit nanosegregated smectic phases in which ion- and electron-conductive layers are integrated separately. In this study, LC PTCBI derivatives bearing polymerizable cyclotetrasiloxane rings are synthesized in order to produce insoluble polymerized films which can conduct electrons as well as ions. This compound exhibits a smectic phase at room temperature, and X-ray diffraction measurement indicates interdigitation between triethylene oxide chains which form ion-conductive sublayers. The spin-coated thin films are polymerized by the exposure to acid vapors to be insolubilized.