( Syntheses of Improved Polymer/Organic Materials for Electroluminescence(EL) Device and Electro-Optical Characteristics I. Properties of Dye Doped Organic EL Device

고기능 EL소자용 고분자/유기 재료의 합성 및 전기 광학적 특성 I. 색소 도핑에 의한 EL소자의 특성

1, 4-Diketo-3, 6-diphenyl-pyrrolo-[3, 4c]-pyrrole(abbriviated DPP) is a new heterocyclic pigment of red color whose chlorinated derivative is now on the market. DDP was synthesized from benzonitrile and diethylsuccinate. Pariser-parr-pople(PPP) molecular orbital calculations have been carried out on the DPP in other to study spectroscopically the DPP chromophore on deprotonation.