Polysulfone Dispersed Liquid Crystals As Promising Materials For Flexible Substrates Of Organic Light Emitting Diodes

The paper deals with the preparation and investigation of a series of polymer dispersed liquid crystals (PDLCs) based on polysulfone matrix and an azomethine liquid crystal. The PDLC systems were prepared by thermal induced phase separation method. Their morphology was analysed by polarized light microscopy, scanning electron microscopy and atomic force microscopy. Mechanical properties were measured by dynamic mechanical analysis determining Young modulus, optical properties by UV-vis determining the transparency and electrical properties by measuring electrical conductivity and current-voltage curves. The data indicated the PDLC systems as potential substrates with improved properties for building flexible organic light emitting diodes.