ICCAS OpenIR
New divinylene trimers with triphenylpyridine segments: Synthesis, photophysics, electrochemical and electroluminescent properties
Vellis, Panagiotis D.1; Ye, Shanghui2; Mikroyannidis, John A.1; Liu, Yunqi2
2008-12-01
Source PublicationSYNTHETIC METALS
ISSN0379-6779
Volume158Issue:21-24Pages:854-860
AbstractThree new trimers PV, FV and CV were synthesized by Heck coupling of 4(4-bromophenyl)-2,6-diphenylpyridine with substituted divinylbenzene, divinylfluorene and divinylcarbazole, respectively. They were very soluble in chloroform, dichloromethane, tetrahydrofuran and toluene. FV and CV were more thermally stable and showed higher glass transition temperature than PV. Their absorption maximum was located at 327-397 nm with optical band gap of 2.53-2.73 eV. FV and CV emitted blue-green light with emission maximum at 455-489 nm while PV emitted green-yellow light with emission maximum at 496-530 nm. Upon protonation, the trimer thin films displayed red-shifts of the emission maximum. The electrochemical and electroluminescent properties of the trimers were studied. Light-emitting diodes (LEDs) based on these trimers were fabricated. These LEDs showed bright blue light for FV. CV and bluish-green light for PV which are in line with their photoluminescence spectra. The maximum brightness was reached approximate 1000cd/m(2) for PV, 380 for FV, and 400 for CV, at current density of 200 mA/cm(2). (C) 2008 Elsevier B.V. All rights reserved.
KeywordDivinylene Molecules Heck Coupling Photophysics Fluorene Carbazole Pyridine Light-emitting Diodes Electroluminescence
DOI10.1016/j.synthmet.2008.06.002
Indexed BySCI
Language英语
WOS IDWOS:000262573900012
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65042
Collection中国科学院化学研究所
Corresponding AuthorMikroyannidis, John A.
Affiliation1.Univ Patras, Dept Chem, Chem Technol Lab, GR-26500 Patras, Greece
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Vellis, Panagiotis D.,Ye, Shanghui,Mikroyannidis, John A.,et al. New divinylene trimers with triphenylpyridine segments: Synthesis, photophysics, electrochemical and electroluminescent properties[J]. SYNTHETIC METALS,2008,158(21-24):854-860.
APA Vellis, Panagiotis D.,Ye, Shanghui,Mikroyannidis, John A.,&Liu, Yunqi.(2008).New divinylene trimers with triphenylpyridine segments: Synthesis, photophysics, electrochemical and electroluminescent properties.SYNTHETIC METALS,158(21-24),854-860.
MLA Vellis, Panagiotis D.,et al."New divinylene trimers with triphenylpyridine segments: Synthesis, photophysics, electrochemical and electroluminescent properties".SYNTHETIC METALS 158.21-24(2008):854-860.
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