Tetrasubstituted-pyrene derivatives for electroluminescent application
摘要:
Tetrasubstituted-pyrenes containing peripheral diarylamines (1-4) or fluorenes (5-6) have been synthesized. These compounds are highly fluorescent and possess high morphological stability and thermal stability. Compounds containing peripheral arylamines (1-3) can be used as the hole-transport and green-emitting materials for two-layered electroluminescent devices. Compounds with peripheral fluorenes (5-6) are efficient blue emitters and exhibit ambipolar carrier-transport characteristics with high electron mobilities (10(-3)-10(-2) cm(2)/V s) and high hole mobilities (>10(-3) cm(2)/V s). Non-doped blue-emitting devices with promising electroluminescent performance (i.e., high efficiency and narrow/saturated emission) can be achieved using fluorene-substituted pyrenes as either the holetransport/emitting layer or the electron-transport/emitting layer in the two-layered devices. (C) 2014 Elsevier B.V. All rights reserved.
1,3,6,8 tetrasubstituted pyrene compound, organic EL element using the same, and organic EL display using the same
申请人:FUJITSU LIMITED
公开号:EP1403354A1
公开(公告)日:2004-03-31
The present invention aims to provide an organic EL element having excellent light-emitting efficiency, emission luminance and color purity of green light. The organic EL element contains an organic thin film layer interposed between a positive electrode and a negative electrode, this organic thin film layer comprising a 1,3,6,8-tetrasubstituted pyrene compound represented by the following formula (1) as a luminescent material:
wherein R1 to R4 may be the same or different, and represent a group represented by the following formula (2):
wherein R5 and R6 may be the same or different, and represent a hydrogen atom or a substituent group.
1,3,6,8-Tetrasubstituted pyrene compound, organic EL element using the same, and organic EL display using the same
申请人:FUJITSU LIMITED
公开号:US20040053069A1
公开(公告)日:2004-03-18
The present invention aims to provide an organic EL element having excellent light-emitting efficiency, emission luminance and color purity of green light. The organic EL element contains an organic thin film layer interposed between a positive electrode and a negative electrode, this organic thin film layer comprising a 1,3,6,8-tetrasubstituted pyrene compound represented by the following formula (1) as a luminescent material:
1
wherein R
1
to R
4
may be the same or different, and represent a group represented by the following formula (2):
2
wherein R
5
and R
6
may be the same or different, and represent a hydrogen atom or a substituent group.
Organic electroluminescence element
申请人:Kinoshita Masaru
公开号:US20080174236A1
公开(公告)日:2008-07-24
An organic electroluminescence element includes at least a light-emitting layer between a pair of electrodes, wherein the light-emitting layer is divided into at least three layers, an intermediate layer containing an electron blocking material or a hole blocking material is disposed between the divided light-emitting layers, an Ea value of the electron blocking material is smaller than an Ea value of a host material of the divided light-emitting layer adjacent on a cathode side or an Ip value of the hole blocking material is larger than an Ip value of a host material of the divided light-emitting layer adjacent on the anode side of the intermediate layer, and a difference of ΔEa or ΔIp is controlled to specific range.
PYRENE POLYMER COMPOUND AND LIGHT EMITTING DEVICE USING THE SAME
申请人:Fukushima Daisuke
公开号:US20100109517A1
公开(公告)日:2010-05-06
A polymer compound comprising a constitutional unit of the formula (1), and a repeating unit of any of the formulae (2) to (4):
(wherein, x3, y1, y2, z1 to z3 are 0 or 1. y3 represents an integer of 0 to 2. u represents an integer of 0 to 8. Z represents a pyrene residue, Ar
1
represents an arylene group or di-valent heterocyclic group, and Ar
2
represents an aryl group or mono-valent heterocyclic group.)