TitleFluorene-based Troger's base analogues: Potential electroluminescent materials
AuthorsXin, Qian
Tao, Xu-Tang
Wang, Fu-Zhi
Sun, Jian-Liang
Zou, De-Chun
Wang, Fa-Jun
Liu, Hui-Jun
Liu, Zhi
Ren, Yan
Jiang, Min-Hua
AffiliationShandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
Peking Univ, Dept Polymer Sci & Engn, Coll Chem & Mol Engn, Key Lab Polymer Chem & Phys,Educ Minist, Beijing 100871, Peoples R China.
KeywordsLIGHT-EMITTING DEVICES
CONJUGATED POLYMERS
SOLAR-CELLS
EMISSION
STATE
DERIVATIVES
DIODES
POLY(9,9-DIOCTYLFLUORENE)
PHOTOLUMINESCENCE
BINDING
Issue Date2008
Publisherorganic electronics
CitationORGANIC ELECTRONICS.2008,9,(6),1076-1086.
AbstractTwo new A-shaped fluorene-based Troger's base (TB) analogues with aryl substitutions are successfully synthesized and their photophysical and electroluminescent properties are examined in detail. Both compounds exhibit strong fluorescence emission in dilute solutions and aggregated states. Some abnormal photophysical behaviors have been observed that is, the amorphous films of the two TB analogues show multiple blue-green emissions similar to the emissions of some polyfluorenes and oligofluorenes, while both the dilute solutions and the polycrystalline powders of two compounds show single blue-violet emission. Furthermore, the emissions of the amorphous film are obviously red-shifted in comparison with the polycrystalline powders. Organic light emitting diodes (OLEDs) using the two compounds as non-doped emitters with device structure of ITO/NPB (30 nm)/TBFB-BP or TBFB-FB (40 nm)/TPBI (40 nm)/LiF (1 nm)/Al (80 nm) were fabricated and high brightness (22047 cd/m(2) for TBFB-BP and 13434 cd/m(2) for TBFB-FB), high efficiency (2.78 cd/A, 1.82 lm/W for TBFB-BP and 2.76 cd/A, 1.93 lm/W for TBFB-FB) and low turn-on voltage (4.6 V for TBFB-BP and 4.5 V for TBFB-FB) were obtained. Our studies suggest that TB analogues could be excellent light emitting materials for OLED applications. (c) 2008 Elsevier B.V. All rights reserved.
URIhttp://hdl.handle.net/20.500.11897/247866
ISSN1566-1199
DOI10.1016/j.orgel.2008.08.013
IndexedSCI(E)
Appears in Collections:化学与分子工程学院
高分子化学与物理教育部重点实验室

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