Novel soluble N-phenyl-carbazole-containing PPVs for light-emitting devices: Synthesis, electrochemical, optical, and electroluminescent properties

doi:10.1002/macp.200300037

CORC > 化学研究所 > 中国科学院化学研究所

	Novel soluble N-phenyl-carbazole-containing PPVs for light-emitting devices: Synthesis, electrochemical, optical, and electroluminescent properties
	Li, HC; Zhang, YG; Hu, YF; Ma, DG; Wang, LX; Jing, XB; Wang, FS
刊名	MACROMOLECULAR CHEMISTRY AND PHYSICS
	2004-01-12
卷号	205 期号:2 页码:247-255
关键词	Light-emitting Diodes (Led) N-phenyl-carbazole Polycondensation Ppvs Thermal Properties
ISSN号	1022-1352
DOI	10.1002/macp.200300037
英文摘要	Novel PPV derivatives (PCA8-PV and PCA8-MEHPV) containing N-phenyl-carbazole units on the back-bone were successfully synthesized by the Wittig polycondensation of 3,6-bisformyl-N-(4-octyloxy-phenyl)carbazole with the corresponding tributyl 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 (M) over bar (w) of 6289 for PCA8-PV and 7387 for PCA8-MEHPV) were soluble in common organic solvents and displayed high thermal stability (T(g)s are 110.7 degreesC for PCA8-PV and 92.2 degreesC for PCA8-MEHPV, respectively) 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, respectively). Compared with those of the single-layer devices, the emission efficiencies of the double-layer devices, in which an electron-transporting layer (Alq(3)) 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.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000188857500013
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/55485]
专题	中国科学院化学研究所
通讯作者	Wang, LX
作者单位	Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Li, HC,Zhang, YG,Hu, YF,et al. Novel soluble N-phenyl-carbazole-containing PPVs for light-emitting devices: Synthesis, electrochemical, optical, and electroluminescent properties[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2004,205(2):247-255.
APA	Li, HC.,Zhang, YG.,Hu, YF.,Ma, DG.,Wang, LX.,...&Wang, FS.(2004).Novel soluble N-phenyl-carbazole-containing PPVs for light-emitting devices: Synthesis, electrochemical, optical, and electroluminescent properties.MACROMOLECULAR CHEMISTRY AND PHYSICS,205(2),247-255.
MLA	Li, HC,et al."Novel soluble N-phenyl-carbazole-containing PPVs for light-emitting devices: Synthesis, electrochemical, optical, and electroluminescent properties".MACROMOLECULAR CHEMISTRY AND PHYSICS 205.2(2004):247-255.