Photo- and electroluminescence from hyperbranched phenylene vinylenes
Sun, QJ; He, QG; Yang, CH; Bai, FL; Li, YF
Source PublicationSYNTHETIC METALS
AbstractWe report photophysical and electroluminescence (EL) properties of three novel hyperbranched phenylene vinylenes (HPVs) with benzene as the core, 2,5-dimethyloxyl substituted phenylene vinylene as the connecting unit, and benzene, dimethylaniline, or pyridine as the terminal group, respectively. The absorption maxima of the HPVs blue-shift from solution to the films due to their twisted molecular conformation. The emission spectra in the films red-shift compared to those in solution, which may originate from interchain excimer species. The thin films of the HPVs exhibit pretty high photoluminescence (PL) quantum yields around 50.5-87.8%. Blue-green light-emitting electrochemical cells (LECs) based on the HPVs have been demonstrated with turn-on voltages of 2.5-2.6 V. The ac impedance measurements indicate the operation of the LECs corresponds to an electrochemical doping model. (C) 2003 Elsevier Science B.V. All rights reserved.
KeywordPhotoluminescence Electroluminescence Hyperbranched Phenylene Vinylenes Light-emitting Electrochemical Cells
Indexed BySCI
WOS IDWOS:000184815800034
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLi, YF
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Key Lab Organ Solids, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Sun, QJ,He, QG,Yang, CH,et al. Photo- and electroluminescence from hyperbranched phenylene vinylenes[J]. SYNTHETIC METALS,2003,139(2):417-423.
APA Sun, QJ,He, QG,Yang, CH,Bai, FL,&Li, YF.(2003).Photo- and electroluminescence from hyperbranched phenylene vinylenes.SYNTHETIC METALS,139(2),417-423.
MLA Sun, QJ,et al."Photo- and electroluminescence from hyperbranched phenylene vinylenes".SYNTHETIC METALS 139.2(2003):417-423.
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