ELECTROLUMINESCENT PROPERTIES OF DYE-DISPERSED POLYURETHANE WITH STILBENE DYE PENDANT

摘要

The dye-dispersed polymer clectroluminescent device using the soluble Polyurethane (PU) derivative with stilbene side chain was successfully prepared. 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran(DCM) was used as a lumophore. The DCM-dispersed polymer exhibit strong photoluminescence (PL) in the red spectral region peaking at 640 nm. Single-layer electroluminescent devices with indium-tin-oxide (ITO) and magnesium-silver (Mg:Ag) as electrodes were fabricated via spin-coating from DCM-dispersed PU solution. Red emission was observed from the devices when a DC voltage was exerted. The EL colors turned from green to red by a DCM.