CN112125835B - 一种空穴传输材料及使用该种材料的有机电致发光器件 - Google Patents
一种空穴传输材料及使用该种材料的有机电致发光器件 Download PDFInfo
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- C07D209/80—[b, c]- or [b, d]-condensed
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
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- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/82—Carbazoles; Hydrogenated carbazoles
- C07D209/86—Carbazoles; Hydrogenated carbazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/10—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing aromatic rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/14—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing three or more hetero rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
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Abstract
Description
技术领域
本发明有机电致发光技术领域,具体涉及一种空穴传输材料及使用该种材料的有机电致发光器件。
背景技术
有机发光二极管(Organic light emitting diode,OLED),最初是由美籍华裔教授邓青云在实验室中发现的,从此以后人们展开了对OLED的开发与研究。OLED有两大应用领域:照明和显示。
目前国内外对OLED的研究已经取得了显著进展,基于发光层全部采用荧光材料的第一代OLED仅利用单重态激子发光,其内量子效率(IQE)只有25%,基于发光层采用过渡金属磷光材料的第二代OLED通过自旋轨道耦合作用,使得三线态激子的辐射成为可能,理论IQE可达100%。但是,第二代基于磷光材料的OLED仍然面临着很多问题:(1)发光层常采用的过渡金属如Os、Ir、Pt等价格高昂,不利于高效率OLED器件的批量生产;(2)在高电流下三线态-三线态激子容易发生猝灭现象而使得器件效率滚降严重。最近几年来,为了降低器件生产成本,使得OLED真正的走向商业化和产业化,避免在发光层使用贵金属掺杂的磷光材料。
OLED的发展促进了人们对有机电致发光材料的研究。相对于无机发光材料,有机电致发光材料具有以下优点:有机材料加工性能好,可通过蒸镀或者旋涂的方法在任何基板上成膜;有机分子结构的多样性使得可以通过分子结构设计及修饰的方法来调节有机材料的热稳定性、机械性能、发光及导电性能,使得材料有很大的改进空间。
有机电致发光的产生靠的是在有机半导体材料中传输的载流子(电子和空穴)的重组。众所周知,有机材料的导电性很差,有机半导体中没有延续的能带,载流子的传输常用跳跃理论来描述。为了能使有机电致发光器件在应用方面达到突破,必须克服有机材料电荷注入及传输能力差的困难。科学家们通过器件结构的调整,例如增加器件有机材料层的数目,并且使不同的有机层扮演不同的器件层,例如有的功能材料可以促进电子从阴极注入,有的功能材料可以促进空穴从阳极注入,有的材料可以促进电荷的传输,有的材料则能起到阻挡电子或者空穴传输的作用。当然在有机电致发光器件里,最重要的各种颜色的发光材料也要达到与相邻功能材料相匹配的目的。因此,效率好寿命长的有机电致发光器件通常是器件结构以及各种有机材料优化搭配的结果,这就为化学家们设计开发各种结构的功能化材料提供了极大的机遇和挑战。
发明内容
发明目的:针对上述技术问题,本发明提供了
为了达到上述发明目的,本发明所采用的技术方案如下:
一种空穴传输材料,其结构式如下所示:
其中,L为单键、未取代的苯基或未取代的联苯基;
R1、R2、R3各自独立的选自氢、取代或未取代的C6-C18的芳香基、取代或未取代的C6-C18的杂芳香基;
Ar1、Ar2各自独立的选自取代或未取代的C6-C30的芳香族基团、取代或未取代的C5-C30的杂芳族基团;
m为0或1。
进一步地,R1、R2各自独立的选自氢、未取代的苯基、未取代的联苯基。
进一步地,R3为氢或以下基团中的任意一种:
进一步地,Ar1、Ar2各自独立的选自以下基团:
*代表括弧中基团上的任意一个氢均可以作为取代的位点。
进一步地,所述空穴传输材料为以下结构式化合物中的任意一种:
上述空穴传输材料的制备方法,包括以下步骤:
(1)
惰性气体保护下,将结构通式为的化合物A、结构通式为的化合物B、叔丁醇钠、Pd2(dba)3、三叔丁基膦、甲苯加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到结构通式为的化合物C;
(2)
惰性气体保护下,将化合物C、结构通式为的化合物D、叔丁醇钠、Pd2(dba)3、三叔丁基膦、甲苯加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到所述空穴传输材料。
上述空穴传输材料在制备有机电致发光器件中的应用。
一种有机电致发光器件,包括阴极、阳极和发光层,所述发光层中含有至少一种上述空穴传输材料。
一种照明设备,包括上述有机电致发光器件。
一种电子显示设备,包括上述有机电致发光器件。
本发明的有益效果:
本发明设计的空穴传输材料,Ar1及Ar2选则苯、联苯、萘、菲、苯取代咔唑等热稳定性良好的大共轭体系刚性基团,该类基团能够大幅提高空穴传输材料的玻璃态转变温度Tg、降低材料的结晶性能,大幅度改良材料的表面稳定性和热稳定性能,这些性能能够有效提高器件的稳定性,保证器件能够长期有稳定使用。同时该类基团具有丰富的电子云密度,很好的给电子性。较低的离子化电位、较低的HOMO能级及较高的空穴迁移率,特别是Ar1或Ar2中有一个基团为菲时,其效果更加明显。
在材料分子中引入大的共轭基团—苯并咔唑基团,可以扩大点在非定域范围,使载流子在分子中的移动性增强,该基团的引入,同时增加了材料的Tg,提高材料的稳定性。
本发明设计的空穴传输材料,整体上具有更高的空穴传输速率,更高的热稳定性能。使用本发明的空穴传输材料所制备的有机电致发光器件与对照例相比,电压降低25-35%,发光效率提高接近一倍,寿命大幅度,由此可见,本发明空穴传输材料能使器件的驱动电压大幅降低,有效减少了电能的消耗、显著提高了发光效率及发光器件的寿命,使用本发明空穴传输材料制备的照明设备、电子显示设备具有高亮度、高效率、低电压的效果,而且能够有效避免屏幕暗点,性能更加优异。
附图说明
图1为本发明应用例13有机电致发光器件的发光亮度与发光时间变化的关系图;
图2为本发明应用例13有机电致发光器件的发光亮度与电压变化的关系图;
由图1可以得出当发光亮度为初始亮度的97%时,此时的发光寿命为406h;
由图2可以得出本发明应用例13有机电致发光器件的驱动电压仅为2.3V,远远低于对照例1和对照例2。
具体实施方式
实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。
实施例1:
化合物1的具体合成方法如下:
(1)
氮气保护下,将化合物1(10g,295g/mol,33.9mmol)、化合物2(1eq,155.96g/mol,33.9mmol,5.29g)、叔丁醇钠(1.1eq,96.1g/mol,37.29mmol,3.58g)、Pd2(dba)3(5%eq,915.72g/mol,1.70mmol,1.55g)、三叔丁基膦(5%eq,202.317g/mol,1.70mmol,0.34g)、甲苯(100g,化合物1的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后用二氯甲烷溶解,柱层析提纯得到化合物3(11.99g,收率95.3%),MS(EI):371(M+)。
(2)
氮气保护下,将化合物3(10g,371g/mol,26.95mmol)、化合物4(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物3的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料1(18.52g,收率96.5%),MS(EI):712(M+)。
实施例2:
化合物2的具体合成方法如下:
步骤1与实施例1相同,其余步骤如下:
(2)
氮气保护下,将化合物3(10g,371g/mol,26.95mmol)、化合物5(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物3的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料2(18.26g,收率95.2%),MS(EI):712(M+)。
实施例3:
化合物3的具体合成方法如下:
(1)
氮气保护下,将化合物6(10g,371.03g/mol,26.95mmol)、化合物2(1eq,155.96g/mol,26.95mmol,4.2g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物6的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后用二氯甲烷溶解,柱层析提纯得到化合物7(11.5g,收率95.5%),MS(EI):447(M+)。
(2)
氮气保护下,将化合物7(10g,447g/mol,22.37mmol)、化合物8(1eq,421.18g/mol,22.37mmol,9.42g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物7的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料3(16.96g,收率96.3%),MS(EI):788(M+)。
实施例4:
化合物4的具体合成方法如下:
(1)
氮气保护下,将化合物9(10g,371.03g/mol,26.95mmol)、化合物2(1eq,155.96g/mol,26.95mmol,4.2g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物6的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后用二氯甲烷溶解,柱层析提纯得到化合物10(11.59g,收率96.2%),MS(EI):447(M+)。
(2)
氮气保护下,将化合物11(10g,447g/mol,22.37mmol)、化合物12(1eq,421.18g/mol,22.37mmol,0.94g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物11的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料4(17.06g,收率96.8%),MS(EI):788(M+)。
实施例5:
化合物5的具体合成方法如下:
步骤1与实施例3相同,其余步骤如下:
(2)
氮气保护下,将化合物7(10g,447g/mol,22.37mmol)、化合物13(1eq,345.15g/mol,22.37mmol,7.72g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物7的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料3(13.78g,收率96.9%),MS(EI):636(M+)。
实施例6:
化合物6的具体合成方法如下:
步骤1与实施例4相同,其余步骤如下:
(2)
氮气保护下,将化合物11(10g,447g/mol,22.37mmol)、化合物13(1eq,345.15g/mol,22.37mmol,7.72g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物11的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料6(13.77g,收率96.8%),MS(EI):636(M+)。
实施例7:
化合物7的具体合成方法如下:
步骤1与实施例1相同,其余步骤如下:
(2)
氮气保护下,将化合物3(10g,371g/mol,26.95mmol)、化合物14(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物3的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料7(18.65g,收率97.2%),MS(EI):712(M+)。
实施例8:
化合物8的具体合成方法如下:
步骤1与实施例4相同,其余步骤如下:
(2)
氮气保护下,将化合物3(10g,371g/mol,26.95mmol)、化合物15(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物3的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料8(18.48g,收率96.3%),MS(EI):712(M+)。
实施例9:
化合物9的具体合成方法如下:
(1)
氮气保护下,将化合物1(10g,295g/mol,33.9mmol)、化合物16(1eq,231.99g/mol,33.9mmol,7.86g)、叔丁醇钠(1.1eq,96.1g/mol,37.29mmol,3.58g)、Pd2(dba)3(5%eq,915.72g/mol,1.70mmol,1.55g)、三叔丁基膦(5%eq,202.317g/mol,1.70mmol,0.34g)、甲苯(100g,化合物1的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后用二氯甲烷溶解,柱层析提纯得到化合物17(14.71g,收率97.1%),MS(EI):447(M+)。
(2)
氮气保护下,将化合物17(12g,447g/mol,26.95mmol)、化合物4(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物17的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料9(20.66g,收率97.3%),MS(EI):788(M+)。
实施例10:
化合物10的具体合成方法如下:
(1)
氮气保护下,将化合物1(10g,295g/mol,33.9mmol)、化合物18(1eq,231.99g/mol,33.9mmol,7.86g)、叔丁醇钠(1.1eq,96.1g/mol,37.29mmol,3.58g)、Pd2(dba)3(5%eq,915.72g/mol,1.70mmol,1.55g)、三叔丁基膦(5%eq,202.317g/mol,1.70mmol,0.34g)、甲苯(100g,化合物1的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后用二氯甲烷溶解,柱层析提纯得到化合物19(14.8g,收率97.7%),MS(EI):447(M+)。
(2)
氮气保护下,将化合物19(12g,447g/mol,26.95mmol)、化合物4(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物19的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料10(20.55g,收率96.8%),MS(EI):788(M+)。
实施例11:
化合物11的具体合成方法如下:
步骤1与实施例10相同,其余步骤如下:
(2)
氮气保护下,将化合物19(12g,447g/mol,26.95mmol)、化合物12(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物19的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料11(20.75g,收率97.7%),MS(EI):788(M+)。
实施例12:
化合物12的具体合成方法如下:
步骤1与实施例9相同,其余步骤如下:
(2)
氮气保护下,将化合物17(12g,447g/mol,26.95mmol)、化合物12(1eq,421.18g/mol,26.95mmol,11.35g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物17的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料12(20.49g,收率96.5%),MS(EI):788(M+)。
实施例13:
化合物21的具体合成方法如下:
步骤1与实施例1相同,其余步骤如下:
(2)
氮气保护下,将化合物3(10g,371g/mol,26.95mmol)、化合物20(1eq,285.15g/mol,26.95mmol,7.68g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物3的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料21(15.14g,收率97.5%),MS(EI):576(M+)。
实施例14:
化合物73的具体合成方法如下:
步骤1与实施例9相同,其余步骤如下:
(2)
氮气保护下,将化合物17(12g,447g/mol,26.95mmol)、化合物21(1eq,275.08g/mol,26.95mmol,7.41g)、叔丁醇钠(1.1eq,96.1g/mol,29.65mmol,2.85g)、Pd2(dba)3(5%eq,915.72g/mol,1.35mmol,1.23g)、三叔丁基膦(5%eq,202.317g/mol,1.35mmol,0.27g)、甲苯(100g,化合物17的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料73(16.92g,收率97.8%),MS(EI):642(M+)。
实施例15:
化合物168的具体合成方法如下:
(1)
氮气保护下,将化合物1(10g,295g/mol,33.9mmol)、化合物22(1eq,322.00g/mol,33.9mmol,10.92g)、叔丁醇钠(1.1eq,96.1g/mol,37.29mmol,3.58g)、Pd2(dba)3(5%eq,915.72g/mol,1.70mmol,1.55g)、三叔丁基膦(5%eq,202.317g/mol,1.70mmol,0.34g)、甲苯(100g,化合物1的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后用二氯甲烷溶解,柱层析提纯得到化合物23(17.87g,收率98.2%),MS(EI):537(M+)。
(2)
氮气保护下,将化合物23(15g,537g/mol,27.93mmol)、化合物4(1eq,421.18g/mol,27.93mmol,11.76g)、叔丁醇钠(1.1eq,96.1g/mol,30.72mmol,2.95g)、Pd2(dba)3(5%eq,915.72g/mol,1.39mmol,1.27g)、三叔丁基膦(5%eq,202.317g/mol,1.39mmol,0.28g)、甲苯(100g,化合物23的10倍质量)加入反应瓶中,升温至回流反应10-15h,反应结束后,冷却至室温后加水搅拌10-30min后过滤,滤液分液,有机相干燥后过硅胶漏斗得二次滤液,减压浓缩后适量溶剂溶解,柱层析提纯得到材料168(26.06g,收率97.8%),MS(EI):954(M+)。
《有机电致发光器件的制造》
应用例1:
其采用ITO作为反射层阳极基板材料,并以N2等离子或UV-Ozone对其进行表面处理,在阳极基板上方,向空穴注入层(HIL)沉积10纳米厚度的化合物A,在其上方选则使用本发明的空穴传输材料1以120纳米厚度形成空穴传输层(HTL),在上述空穴传输层(HTL)上,选择BALQ作为红光主体,选择RD-1为dopant材料,掺杂约5%的25纳米厚度形成发光层,并在上方以1:1的比例混合蒸镀35纳米厚度的ETM和LiQ到电子输送层(ETL),之后在电子注入层(EIL)上以2纳米厚度的LiQ进行蒸镀,此后在阴极将镁(Mg)和银(Ag)以9:1的比例混合且以厚度为15纳米进行蒸镀,在上述阴极封口层上沉积65纳米厚度的N4,N4′-BIS[4-BIS(3-methylphenyl)Amino phenyl)]-N4,N4′-Diphenyl-[1,1′-Biphenyl]-4,4′Diamin(DNTPD)。
此外,在阴极表面以UV硬化胶合剂和含有除湿剂的封装薄膜(seal cap)进行密封,以保护有机电致发光器件不被大气中的氧气或水分所影响至此制备获得有机电致发光器件。
应用例2-15:
分别以本发明的空穴传输材料2、3、4、5、6、7、8、9、10、11、12、21、73、168作为空穴传输物质,其他部分与应用例1一致,据此制作出应用例2-15的有机电致发光器件。
对照例1、2、3:
与应用例1的区别在于,分别使用NPD、化合物X、化合物Y代替本发明的空穴传输材料1作为空穴传输材料(HTL),其余与应用例1相同。
上述应用例制造的有机电致发光器件及对照例制造的有机电致发光器件的特性是在电流密度为10mA/cm2的条件下测定的,结果如表1所示。
表1:
由如上表1的实验对比数据可知,采用本发明所述的空穴传输材料制备的有机电致发光器件与对照例相比,发光效率提高接近一倍,寿命大幅度提高,由此可见,本发明空穴传输材料能使器件的驱动电压大幅降低,有效减少了电能的消耗、显著提高了发光效率及发光器件的寿命。
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