On January 12, 2004, Li, Hongchao; Zhang, Yanguang; Hu, Yufeng; Ma, Dongge; Wang, Lixiang; Jing, Xiabin; Wang, Fosong published an article.Reference of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene The title of the article was Novel soluble N-phenyl-carbazole-containing PPVs for light-emitting devices: Synthesis, electrochemical, optical, and electroluminescent properties. And the article contained the following:
Novel PPV derivatives (PCA8-PV and PCA8-MEHPV) containing N-phenyl-carbazole units on the backbone were successfully synthesized by the Wittig polycondensation of 3,6-bisformyl-N-(4-octyloxy-phenyl)carbazole with the corresponding tri-Bu phosphonium salts in good yields. The newly formed and dominant trans vinylene double bonds were confirmed by FT-IR and NMR spectroscopy. The polymers (with M̅w of 6289 for PCA8-PV and 7387 for PCA8-MEHPV) were soluble in common organic solvents and displayed high thermal stability (Tgs are 110.7°C for PCA8-PV and 92.2°C for PCA8-MEHPV, resp.) because of the incorporation of the N-phenyl-carbazole units. Cyclic voltammetry investigations (onsets: 0.8 V for PCA8-PV and 0.7 V for PCA8-MEHPV) suggested that the polymers possess enhanced hole injection/transport properties, which can be also attributed to the N-phenyl-carbazole units on the backbone. Both the single-layer and the double-layer light-emitting diodes (LEDs) that used the polymers as the active layer emitted a greenish-blue or bluish-green light (the maximum emissions located 494 nm for PCA8-PV and 507 nm for PCA8-MEHPV, resp.). Compared with those of the single-layer devices, the emission efficiencies of the double-layer devices, in which an electron-transporting layer (Alq3) was added, were enhanced by a factor of 10, implying that the better hole-electron balance is achieved because of the incorporation of the electron-transporting layer. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Reference of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene
The Article related to bisformyloctyloxyphenylcarbazole tributyl phosphonium, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Reference of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene
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