Synthesis and Properties of New Organic Electroluminescent Materials of the Distyrylarylene Derivatives Containing N-hexyl Carbazole and Phenothiazine Structures
ZHANG Xiqi, YANG Zhiyong, CHEN Meina, et al. Synthesis and Properties of New Organic Electroluminescent Materials of the Distyrylarylene Derivatives Containing N-hexyl Carbazole and Phenothiazine Structures[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2009,48(6):58-62.
ZHANG Xiqi, YANG Zhiyong, CHEN Meina, et al. Synthesis and Properties of New Organic Electroluminescent Materials of the Distyrylarylene Derivatives Containing N-hexyl Carbazole and Phenothiazine Structures[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2009,48(6):58-62.DOI:
Distyrylarylene derivative is one of the most promising blue OLED materials with good film forming ability and high thermal stability. Two compounds were synthesized by introducing the conjugated groups to the distyrylarylene backbone by using WittigHorner reactions. Their chemical structures were characterized by
1
H NMR
IR
MS and EA analyses
and the properties were investigated by UV
PL
TGA
DSC
PLM and XRD analyses. The results showed that (1) two compounds emitted strong fluorescence
and the emitting strength of the compound with phenothiazine structure was stronger than that with carbazole structure; (2) the compounds possessed high thermal stability; (3) the compounds had good solubility in organic solvents and film forming ability
which was advantaged for OLED device fabrication using spincoating method; (4) the compound containing phenothiazine groups exhibited a Smectic A liquid crystalline phase under hot-stage PLM.