(Polymer/liquid crystal) composite films with high electric charge holding

A (polymer/liquid crystal: LC) composite film with a high electric charge h olding was prepared by a solvent-induced phase separation method. The (poly diisopropyl fumarate (Pdi-iPF)/TL205 (LC)) composite film sandwiched betwee n two transparent electrodes exhibited highly stable electric charge holdin g over several hundreds seconds after the electric circuit connecting betwe en the electrodes was opened. Reversible light transmission-light scatterin g switching upon an open circuit after the application of a pulse electric field and a short one, respectively, was achieved for the (Pdi-iPF/TL205) c omposite film.