CN111574505A - 一种以苯并[c]噌啉为受体的化合物及其应用 - Google Patents

一种以苯并[c]噌啉为受体的化合物及其应用 Download PDF

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CN111574505A
CN111574505A CN202010441885.4A CN202010441885A CN111574505A CN 111574505 A CN111574505 A CN 111574505A CN 202010441885 A CN202010441885 A CN 202010441885A CN 111574505 A CN111574505 A CN 111574505A
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cinnoline
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organic electroluminescent
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孙军
张宏科
刘凯鹏
何海晓
杨丹丹
田密
李江楠
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Xi'an Manareco New Materials Co ltd
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Abstract

本发明公开了一种以苯并[c]噌啉为受体的化合物,属于有机电致发光功能材料及器件技术领域。该化合物的结构通式如式(Ⅰ)所示,式(Ⅰ)中,D1、D2相同均选自取代或未取代的咔唑基、吩唖嗪基、吩嗪基、吩噁嗪基、吩噻嗪基或吖啶基的给电子基团。本发明还提供了一种以苯并[c]噌啉为受体的化合物在有机电致发光器件中的应用以及有机电致发光器件。本发明提供的以苯并[c]噌啉为受体的化合物通过特定位置引入特定的给电子基团修饰构成的全新化合物具有较好的能量传输能力和电荷传输能力,可显著提高发光器件的发光稳定性,可广泛应用在OLED发光器件及显示装置上作为发光层主体材料、或者热活性延迟荧光(TADF)发光材料使用。结构通式如式(I)所示:
Figure DDA0002504473410000011

Description

一种以苯并[c]噌啉为受体的化合物及其应用
技术领域
本发明属于有机电致发光功能材料及器件技术领域,具体涉及一种以苯并[c]噌啉为受体的化合物及其应用。
背景技术
作为一种自发光的电子元件,有机电致发光二极管(OLED:Organic LightEmission Diodes)显示及照明元件的发光机理是在直流电场的作用下,借助有机半导体功能材料将电能直接转化为光能的新型光电信息技术。其发光色彩可为单独的红、绿、蓝、黄光或者是组合白光。OLED发光显示技术的最大特点在于超薄、响应速度快、超轻量、面发光及柔性显示,可用于制造单色或全色显示器,作为新型光源技术,还可以制作照明、显示产品或新型背光源技术用于制造液晶显示器。
按照发光原理,有机电致发光元件(有机EL元件)可分为荧光型与磷光型这两类。对于有机电致发光元件施加电压,注入来自阳极的空穴与来自阴极的电子,他们在发光层中再次结合形成激子。依据电子自旋统计法,单线态激子与三重态激子以25%:75%的比例生成。荧光型因为利用了单线态激子来发光,故其内部量子效率只能达到25%。磷光材料由重金属元素构成,通过隙间穿越可以同时利用单线态和三线态能量,内量子效率可以达到100%。热活性延迟荧光(Thermally Activated Delayed Fluorescence,TADF)材料是继有机荧光材料和有机磷光材料之后发展的第三代有机发光材料。可以通过三线态-三线态湮灭(TTA)或隙间穿越反转实现。该类材料一般具有较小的单线态-三线态能级差(ΔEst),三线态激子可以通过反隙间穿越转变成单线态激子发光,可以充分利用电激发下形成的单线态激子和三线态激子,器件的内量子效率可以达到100%,同时材料结构多样化,性质稳定,价格便宜无需铱、铂等贵重金属,在OLEDs领域的应用前景广阔。近几年的研究结果表明:绿光和红光磷光材料可以实现产业化要求,但是仍然存在价格昂贵的问题,而蓝光磷光材料寿命无法满足应用要求因此无法实现产业化,目前OLED产品中的蓝光材料仍为传统的荧光材料,而作为TADF材料,红、绿、蓝光材料仍没有实现产业化,目前仍为研究热点。
TADF材料不仅可以作为发光层中的发光材料(emitter),也可以做为发光层中的主体材料或辅助主体材料来敏化emitter,这类器件有助于提高传统器件的效率,改善器件的色纯度,提高器件的工作寿命,是一类具有广阔应用前景的有机电致发光功能材料。TADF材料结构上一般由给电子基团-吸电子基团通过π健连接而成,但是目前能够被利用的吸电子基团种类很少,尤其是具有高品质TADF蓝光材料比较少,而且目前所报道的蓝光材料色纯度存在缺陷,器件寿命不够理想还无法达到实用化要求,因此设计发明新型吸电子基团开发新型蓝光TADF材料非常重要。
苯并[c]噌啉由于其分子内特有的分子共轭结构具有较高的热稳定性与电子亲和势能。该结构通过连接典型给电子基团可以构筑给-受体型分子结构,得到具有双极性特点的TADF材料,可以用作发光层主体材料或发光材料应用。
发明内容
本发明的目的是提供一种以苯并[c]噌啉为受体的化合物,充分利用电子受体能力以及三线态能量,经过不同给电子基团的修饰,该类化合物可以作为发光层中的主体材料或发光材料,该类材料应用到有机电致发光器件中,能够显著改善有机电致发光器件的器件性能。
本发明的第一个目的是提供一种以苯并[c]噌啉为受体的化合物,结构通式如式(I)所示:
Figure BDA0002504473390000031
式(Ⅰ)中,
D1、D2相同均选自取代或未取代的咔唑基、吩唖嗪基、吩嗪基、吩噁嗪基、吩噻嗪基或吖啶基的给电子基团;
所述取代基为甲基、乙基、异丙基、叔丁基、苯基、咔唑基、胺基、吖啶基、吩唖嗪基、芴基、二苯并呋喃、二苯并噻吩中的一种或多种。
优选的,所述D1、D2相同并选自以下结构式中的一种:
Figure BDA0002504473390000032
优选的,具体为如下化合物中的任意一种:
Figure BDA0002504473390000041
Figure BDA0002504473390000051
本发明第二个目的是提供上述的以苯并[c]噌啉为受体的化合物在有机电致发光器件中的应用。
本发明第三个目的是提供一种有机电致发光器件,包括发光层,所述发光层的主体材料和/或发光材料包括上述的任一所述的以苯并[c]噌啉为受体的化合物。
本发明的第四个目的是提供上述有机电致发光器件在有机电致发光显示装置中的应用。
与现有方法相比,本发明的有益效果在于:
本发明通过特定位置引入特定的给电子集团修饰苯并[c]噌啉构成全新化合物;在苯并[c]噌啉特定位置上引入给电子基团,改善了苯并[c]噌啉为核心结构的轨道能级及三线态能量;所开发的材料为典型的给-受体结构,具有双极性特点及TADF性质,可以作为发光层主体材料或发光材料使用;
该类系列化合物在有机电致发光(OLED)器件中作为主体材料或者TADF材料表现出优良的性能。
附图说明
图1为本发明实施例中提供的一种有机电致发光元件的结构示意图。
附图标记说明:
1、衬底,2、阳极层,3、空穴注入层,4、第一空穴传输层,5、第二空穴传输层,6、发光层,7、空穴阻挡层,8、电子传输层,9、电子注入层,10、阴极层。
具体实施方式
为了使本领域技术人员更好地理解本发明的技术方案能予以实施,下面结合具体实施例和附图对本发明作进一步说明,但所举实施例不作为对本发明的限定。
下述各实施例中所述实验方法和检测方法,如无特殊说明,均为常规方法;所述试剂和材料,如无特殊说明,均可在市场上购买得到。
本发明提供的以苯并[c]噌啉为受体的化合物结构通式如式(I)所示:
Figure BDA0002504473390000061
式(Ⅰ)中,
D1、D2相同均选自取代或未取代的咔唑基、吩唖嗪基、吩嗪基、吩噁嗪基、吩噻嗪基或吖啶基的给电子基团;
所述取代基为甲基、乙基、异丙基、叔丁基、苯基、咔唑基、胺基、吖啶基、吩唖嗪基、芴基、二苯并呋喃、二苯并噻吩中的一种或多种。
本发明通过在苯并[c]噌啉特定位置上引入给电子基团,改善了苯并[c]噌啉核心结构的轨道能级及三线态能量;所开发的材料为典型的给-受体结构,具有双极性特点及TADF性质,可以作为发光层主体材料或发光材料使用;
该类系列化合物在有机电致发光(OLED)器件中作为主体材料或者TADF材料表现出优良的性能。
以下示出本发明的以苯并[c]噌啉为受体的化合物的具体例:
Figure BDA0002504473390000071
Figure BDA0002504473390000081
下面,我们提供制备上述化合物及所对应的几个中间体的具体合成方法。
中间体合成
Figure BDA0002504473390000091
(1)中间体1-2合成
Figure BDA0002504473390000092
在500ml三口圆底烧瓶中加入30g中间体1-1,300mlDMF,20.5g活性铜粉。通氮气,反应体系加热至120℃搅拌反应3h后取样监测,当原料中间体1-1完全反应后将反应体系降至室温,在搅拌条件下将反应液倒入3倍体积水中析出固体。过滤后所得固体用甲苯完全溶解后水洗至中性,无水硫酸钠干燥后过柱,洗脱液浓缩所得粗品用乙醇:甲苯=4:1的混合溶剂重结晶得黄色固体23.8g,收率65.8%
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ8.64(s,2H),8.01(d,j=8.0Hz,2H),7.92(d,j=8.0Hz,2H)。
(2)中间体1合成
Figure BDA0002504473390000093
在3L三口圆底烧瓶中通入氮气,加入500ml干燥的乙醚,17.5g四氢铝锂,将23g中间体1-2溶于800ml乙醚和800ml甲苯的混合溶液中,分批加入到反应体系中。加料完毕后在常温条件下搅拌反应4h,然后加热到45℃反应0.5h。待原料完全反应后降至室温加水除去未反应的四氢铝锂,过滤并分液,有机相用无水硫酸钠干燥后蒸除溶剂,所得粗品过柱纯化得黄色固体14.1g,收率73.2%。1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ8.44(s,2H),7.57(d,j=8.0Hz,2H),7.32(d,j=8.0Hz,2H)。
(3)化合物1合成
Figure BDA0002504473390000101
在250ml三口瓶中加入10g中间体1,10.9g化合物1-1,120ml甲苯,通入氮气,然后加入16.4g碳酸钾,0.67g醋酸钯,1.46g三叔丁基膦。反应液升温至110℃回流搅拌反应8h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱纯化,重结晶得化合物1为白色固体12.7g,收率83.8%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ8.55(d,j=7.2Hz,2H),8.42(s,j=8.0Hz,2H),8.19(d,j=7.2Hz,2H),7.94(d,j=7.2Hz,2H),7.55-7.58(m,4H),7.50(t,j=7.2Hz,2H),7.41(s,2H),7.35(t,j=7.2Hz,2H),7.20(t,j=7.2Hz,2H),7.16(t,j=7.2Hz,2H)。
(4)化合物5合成
Figure BDA0002504473390000102
在250ml三口瓶中加入10g中间体1,13.7g化合物5-1,120ml甲苯,通入氮气,然后加入11.4g叔丁醇钠,0.67g醋酸钯,1.46g三叔丁基膦。反应液升温至110℃回流搅拌反应8h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱纯化,重结晶得化合物5为白色固体13.5g,收率76.2%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ7.57(d,j=8.0Hz,2H),7.37(s,2H),7.17-7.19(m,8H),7.14(d,j=7.2Hz,4H),6.95(t,j=7.2Hz,4H),6.65(d,j=8.0Hz,2H),1.69(s,12H)。
(5)化合物8合成
Figure BDA0002504473390000111
在250ml三口瓶中加入10g中间体1,21.8g化合物8-1,120ml甲苯,通入氮气,然后加入11.4g叔丁醇钠,0.67g醋酸钯,1.46g三叔丁基膦。反应液升温至110℃回流搅拌反应10h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱,重结晶得化合物8为白色固体17.1g,收率68.2%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ7.57(d,j=8.0Hz,2H),7.37(s,2H),7.26(t,j=6.0Hz,8H),7.17-7.19(m,12H),7.14(d,j=6.0Hz,4H),7.10(d,j=6.0Hz,8H),6.95(t,j=7.2Hz,4H),6.65(d,j=8.0Hz,2H)。
(6)化合物23合成
Figure BDA0002504473390000112
在250ml三口瓶中加入10g中间体1,18.5g化合物23-1,120ml甲苯,通入氮气,然后加入11.4g叔丁醇钠,0.67g醋酸钯,1.46g三叔丁基膦。反应液升温至110℃回流搅拌反应10h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱纯化,重结晶得化合物23为白色固体16.2g,收率73.5%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ8.55(d,j=7.2Hz,2H),8.42(s,2H),8.24(d,j=7.2Hz,2H),8.21(d,j=7.2Hz,2H),7.94(d,j=7.2Hz,2H),7.74(d,j=7.2Hz,2H),7.55-7.57(m,6H),7.41(d,j=8.0Hz,2H),7.38(t,j=7.2Hz,2H),7.35(t,j=7.2Hz,2H),7.16(t,j=7.2Hz,2H),1.69(s,12H)。
(7)化合物29合成
Figure BDA0002504473390000121
在500ml三口瓶中加入10g中间体1,17.1g化合物29-1,16.4g碳酸钾,1.9g四叔丁基溴化铵,120ml甲苯,60ml乙醇,40ml水,通入氮气,然后加入0.34g四(三苯基膦)钯。反应液升温至80℃回流搅拌反应6h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱纯化,重结晶得化合物29为白色固体15.1g,收率76.8%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ8.55(d,j=7.2Hz,2H),8.50(s,2H),7.99(d,j=7.2Hz,2H),7.94(d,j=7.2Hz,2H),7.89(d,j=7.2Hz,2H),7.77(d,j=7.2Hz,2H),7.62(t,j=6.0Hz,4H),7.58(t,j=6.0Hz,2H),7.50-7.52(m,6H),7.35(t,j=7.2Hz,2H),7.27(d,j=8.0Hz,2H),7.16(t,j=7.2Hz,2H)。
(8)化合物35合成
Figure BDA0002504473390000122
在500ml三口瓶中加入10g中间体1,14.2g化合物35-1,16.4g碳酸钾,1.9g四叔丁基溴化铵,120ml甲苯,60ml乙醇,40ml水,通入氮气,然后加入0.34g四(三苯基膦)钯。反应液升温至80℃回流搅拌反应6h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱纯化,重结晶得化合物35为白色固体13.6g,收率81.2%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ8.50(s,2H),7.90(d,j=7.2Hz,2H),7.78(s,j=7.2Hz,2H),7.65(d,j=7.2Hz,2H),7.55(d,j=7.2Hz,2H),7.52(d,j=8.0Hz,2H),7.47(t,j=7.2Hz,2H),7.38(t,j=7.2Hz,2H),7.28(m,4H),1.69(s,12H)。
(9)化合物48合成
Figure BDA0002504473390000131
在250ml三口瓶中加入10g中间体1,10.9g化合物48-1,120ml甲苯,通入氮气,然后加入16.4g碳酸钾,0.67g醋酸钯,1.46g三叔丁基膦。反应液升温至110℃回流搅拌反应8h,TLC监测原料完全反应后降至室温,反应液水洗至中性,有机相用无水硫酸钠干燥后浓缩所得粗品经过柱纯化,重结晶得化合物48为白色固体14.6g,收率86.1%。
1H NMR图谱分析结果为:1H NMR(400MHz,CDCl3)δ7.98(d,j=7.2Hz,2H),7.64(d,j=7.2Hz,2H),7.57(d,j=8.0Hz,2H),7.54(d,j=7.2Hz,2H),7.37-7.39(m,4H),7.28-7.31(m,4H),7.24(t,j=6.0Hz,4H),7.08(d,j=6.0Hz,4H),6.97-7.00(m,4H),6.65(d,j=8.0Hz,2H)。
对上述实施例提供的部分化合物及现有材料分别进行T1能级以及HOMO、LUMO能级测试,结果如表1所示:
表1本发明化合物T1能级以及HOMO、LUMO
Figure BDA0002504473390000132
Figure BDA0002504473390000141
注:最高分子占有轨道(HOMO)和最低分子未占有轨道(LUMO)三线态能量(T1)以及ΔEst为Gaussian 09软件进行模拟计算所得数据,计算方法采用B3LYP杂化泛函,基组6-31g(d,P)。
由表1可得,本发明的有机化合物具有较高的三线态能量和较合适的HOMO/LUMO,在OLED器件中有利于载流子的传输和能量的转移,这些化合物可以作为磷光主体材料、荧光主体材料或TADF主体材料使用,也可以作为TADF发光材料使用。在没有特定限制的情况下,上述有机电致发光器件可以是磷光器件也可以是荧光器件或者是包含TADF材料器件。因此,本发明以苯并[c]噌啉为受体的化合物在应用于OLED器件发光层主体材料或TADF发光材料,可以有效地提高器件的发光效率及使用寿命等性能。
下面以本发明提供的部分化合物为例,将其分别作为作为发光层材料(主体材料和/或掺杂染料)应用到有机电致发光器件中,以验证其所取得的优异效果。
具体通过器件实施例1-9和对比例1-2的器件性能详细说明本发明的OLED材料应用在器件中的优异效果。本发明器件实施例1-9和对比例1-2的结构制作工艺完全相同,并且采用了相同的玻璃基板和电极材料,电极材料膜厚也保持一致,所不同的是发光层材料做了调整,具体如下。
器件应用实施例
器件实施例1
本实施例提供了一种有机电致发光器件,其结构具体如图1所示,包括依次层叠设置的衬底1、阳极层2、空穴注入层3、第一空穴传输层4、第二空穴传输层5、发光层6、空穴阻挡层7、电子传输层8、电子注入层9和阴极层10。
其中,阳极层2材料选择具有高功函数的铟锡氧化物(ITO),空穴注入层3材料选择HAT-CN,厚度为5nm;第一空穴传输层4材料选择NPB,厚度为60nm;第二空穴传输层5材料选择TCTA,厚度为15nm;发光层6使用化合物1作为主体材料,RD01作为发光材料,掺杂质量比为3%,厚度为30nm;空穴阻挡层7的材料选择TPBI,厚度为10nm;电子传输层8的材料选择ET-1,厚度为35nm;电子注入层9的材料选择Liq,厚度为2nm;阴极层的材料选择Al,厚度为100nm。
器件中各功能层所使用基本材料结构式如下:
Figure BDA0002504473390000151
上述有机电致发光器件的具体制备步骤如下:
1)清洗透明玻璃或塑料基板上的ITO阳极,分别用去离子水、丙酮、乙醇各超声清洗20分钟,然后进行氧气氛围下等离子(Plasma)处理5分钟;
2)在ITO阳极层上,通过真空蒸镀方式蒸镀空穴注入层材料HAT-CN,厚度为5nm,这层作为空穴注入层;
3)在空穴注入层上通过真空蒸镀方式蒸镀空穴传输材料NPB,厚度为60nm,该层作为第一空穴传输层;
4)在第一空穴传输层NPB上通过真空蒸镀方式蒸镀空穴传输材料TCTA,厚度为15nm,这层作为第二空穴传输层;
5)在第二空穴传输层上,通过真空蒸镀方式共蒸镀发光层,使用化合物1作为主体材料,RD01作为发光材料,掺杂质量比为3%,厚度为30nm;
6)在发光层之上,通过真空蒸镀的方式蒸镀空穴阻挡材料TPBI,厚度为10nm,这一层作为空穴阻挡层;
7)在空穴阻挡层上,通过真空蒸镀的方式蒸镀电子传输材料ET-1,厚度为35nm,这一层作为电子传输层;
8)在电子传输层上,通过真空蒸镀的方式蒸镀电子注入材料Liq,厚度为2nm,这一层作为电子注入层;
9)在电子注入层上,通过真空蒸镀的方式蒸镀阴极Al,厚度为100nm,该层作为阴极导电电极使用。
器件实施例2
与器件实施例1相同,不同之处:将化合物23作为主体材料替代化合物1。
器件实施例3
与器件实施例1相同,不同之处:将化合物29作为主体材料替代化合物1。
器件实施例4
与器件实施例1相同,不同之处:将化合物35作为主体材料替代化合物1。
器件实施例5
与器件实施例1相同,不同之处:将化合物48作为主体材料替代化合物1。
器件实施例6
与器件实施例1相同,不同之处:将CBP作为主体,化合物1作为发光材料。
器件实施例7
与器件实施例6相同,不同之处:将化合物5作为发光材料。
器件实施例8
与器件实施例6相同,不同之处:将化合物8作为发光材料。
器件实施例9
与器件实施例6相同,不同之处:将化合物23作为发光材料。
对比例1
与器件实施例6相同,不同之处:RD01作为发光材料替代化合物1。
对比例2
与对比例1相同,不同之处:PTZ-DCPP作为发光材料替代RD01。
本发明器件实施例1-9、对比例1-2所制备的不同器件构成成分,如表2所示:
表2各器件实施例的有机电致发光器件构成成分对比表
Figure BDA0002504473390000171
将各组有机电致发光器件用公知的驱动电路将阴极和阳极连接起来,通过标准的方法采用Keithley2400电源结合PR670光度计测试OLED器件的电压-效率-电流密度关系;器件的寿命通过恒流法测试,测试条件为恒定电流密度为10mA/cm2,测试亮度衰减到初始亮度的95%的时间,即为器件LT95寿命,测试结果如表3所示:
表3各组有机电致发光器件性能结果
Figure BDA0002504473390000181
由表3可知,本发明提供的化合物作为发光层的主体材料应用到OLED红光发光器中,性能优良。如器件实施例4中的化合物35作为磷光主体材料与对比例1CBP相比,发光效率和使用寿命都得到了显著的提高,发光效率提高了10.6%,使用寿命提高了22.3%以上;如器件实施例6-9中的化合物作为TADF发光材料性能优良,如化合物5与对比例2中的PTZ-DCPP相比,发光效率提高了11.8%,使用寿命提高了45.5%,且色度优良。可见选用本发明的化合物作为OLED器件的主体材料或发光材料,对比现有材料应用到OLED发光器件,器件的发光效率、寿命、色纯度等光电性能均有良好的表现,而且材料的合成工艺简单,在OLED器件的应用上具有很大的应用价值,具有良好的产业化前景。
本发明在已有苯并[c]噌啉通过在固定的取代位置连接胺类、咔唑衍生物、吩唖嗪、吖啶衍生物等给电子集团修饰进而得到给-受体型化合物。经过特定基团修饰的该类化合物具有合适的前线轨道能级以及三线态能量,所创新的系列化合物在有机电致发光(OLED)器件中作为主体材料或者发光材料表现出优良的性能。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内也意图包含这些改动和变型在内。

Claims (6)

1.一种以苯并[c]噌啉为受体的化合物,其特征在于,结构通式如式(I)所示:
Figure FDA0002504473380000011
式(Ⅰ)中,
D1、D2相同均选自取代或未取代的咔唑基、吩唖嗪基、吩嗪基、吩噁嗪基、吩噻嗪基或吖啶基的给电子基团;
所述取代基为甲基、乙基、异丙基、叔丁基、苯基、咔唑基、胺基、吖啶基、吩唖嗪基、芴基、二苯并呋喃、二苯并噻吩中的一种或多种。
2.根据权利要求1所述的以苯并[c]噌啉为受体的化合物,其特征在于,所述D1、D2相同并选自以下结构式中的一种:
Figure FDA0002504473380000012
Figure FDA0002504473380000021
3.根据权利要求1所述的以苯并[c]噌啉为受体的化合物,其特征在于,具体为如下化合物中的任意一种:
Figure FDA0002504473380000022
Figure FDA0002504473380000031
4.一种权利要求1~3任一项所述的以苯并[c]噌啉为受体的化合物在有机电致发光器件中的应用。
5.一种有机电致发光器件,包括发光层,其特征在于,所述发光层的主体材料和/或发光材料中的至少一种包括权利要求1~3任一所述的以苯并[c]噌啉为受体的化合物。
6.权利要求5所述的有机电致发光器件在有机电致发光显示装置中的应用。
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