CN111333632A - 用于有机发光器件的化合物 - Google Patents

用于有机发光器件的化合物 Download PDF

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CN111333632A
CN111333632A CN201811552018.7A CN201811552018A CN111333632A CN 111333632 A CN111333632 A CN 111333632A CN 201811552018 A CN201811552018 A CN 201811552018A CN 111333632 A CN111333632 A CN 111333632A
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田杰
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Incoflex Semiconductor Technology Ltd
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Abstract

一种用于有机发光二极管器件中的化合物具有如通式(I)的结构式

Description

用于有机发光器件的化合物
技术领域
本发明是涉及有机发光器件领域，特别是有关于一种用于有机发光二极管显示器件中的化合物。
背景技术
有机发光二极管(Organic light emitting diode,简称OLED)显示器件由于不需要背光源，对比度高、厚度薄、视角广、反应速度快、可用于挠曲性面板、使用温度范围广、构造及制程较简单等优异特性，被认为是下一代的平面显示器新兴应用技术。
有机发光二极管(以下称OLED)或者又称电致发光器件(EL)可以包括阳极、阴极以及介于阳极和阴极之间的有机发光材料层。其中阳极一般由透明导电材料如铟锡氧化物(ITO)制成，而阴极一般则是由低功函的金属例如镁 (Mg)、钙(Ca)、铝(Al)或是其合金所制成。在OLED中，正电荷，即电洞(hole) 和负电子，即电子(electron)分别从阳极和阴极注入到发光材料层中，并且在发光材料层中再结合，从而形成可以发光的激发态。
然而现有技术中，OLED发光层由主体材料和客体材料组成，而客体发光材料主要是由金属配合物组成，金属配合物主要是由于重金属原子的引入，使得发光层内的量子效率可以提升至100％，但是重金属原子资源少，取得不易，导致使用重金属成本高，合成效率低。另外，重金属也比较容易污染环境，造成自然生态的破坏或是伤害人体，因此众多因素限制了利用金属配合物做为客体材料来与主体材料合成形成有机发光二极管的发光层的有机材料。
发明内容
根据现有技术的缺陷，本发明主要公开一种以杂环小分子所合成的光电有机发光材料，其发光外量子效率可以达100％，且在不引入重金属原子的情况下，可以将小分子外量子发光效率提升至100％，据此，可以得到较高发光效率的有机发光器件，并且可以降低有机发光器件的制造成本。
根据上述目的，本发明披露一种用于有机发光器件的化合物，具有化合物具有如式(I)通式的结构式:
Figure RE-GDA0001949660780000021
其中R1,R2为取代单元，R1及所述R2选自如下列取代基团中的一种:二甲基吖啶基、芴基、螺二芴基、咔唑基、芳胺基、吩噻嗪基、吩恶嗪类基和吲哚类基和氢原子，且R1及R2 可以是相同的取代基团或是不同的取代基团。
于本发明较优选的实施例中，于所述式(I)中的n为取代基团R1,R2在通式中的苯环上可取代的数量，且n为1-4的整数。
于本发明较优选的实施例中，于式(I)中的X、Y分别为取代单元，且X 及Y分别选自如下列取代基团中的一种:
Figure RE-GDA0001949660780000022
Figure RE-GDA0001949660780000023
其中 X及Y可以是相同的取代基团或是不同的取代基团。
于本发明较优选的实施例中，Z1及Z2为取代单元，Z1及Z2为苯基、芳香烃衍生物或是烷基，且Z1和Z2可以是相同的取代基团或是不同的取代基团。
具体实施方式
本发明披露一种用于有机发光二极管器件中的化合物，特别是有关于用于有机发光器件的化合物，此化合物以杂氮类有机化合物为主进行合成，以取代金属配合物客体材料做为有机发光二极管器件中各功能层，可以降低成本，也减少对重金属的依赖，并且提高有机发光器件中的发光效率。
在本发明中，用于有机发光二极管器件中的化合物具有如通式(I)的结构式
Figure RE-GDA0001949660780000031
其中R1,R2为取代单元，R1及R2 选自如下列取代基团中的一种:二甲基吖啶基、芴基、螺二芴基、咔唑基、芳胺基、吩噻嗪基、吩恶嗪类基和吲哚类基和氢原子，且R1及R2可以是相同或是不同的取代基团。此外，式(I)中，n为取代基团R1,R2在式(I)所表示的通式中的苯环上可取代的数量，且n为1-4的整数。
因此，在本发明的实施例中，上述式(I)中的R1和R2可以同时是上述取代基团的任一种，而n可以是1-4的任何一个整数的数字，当R1,R2相同时,n值可以相同或是不同,同样的当R1,R2不同时,n值可以相同也可以不相同。于另一实施例中，上述式(I)中的R1可以是二甲基吖啶基，其取代的数量可以是1-4，即(二甲基吖啶基)1-4；而R2可以是咔唑基，其取代的数量可以是1-4个，即(咔唑基)1-4，其中二甲基吖啶基与咔唑基的n的数值可以相同或是不相同。
而于上述式(I)中，X及Y分别为取代单元，且X及Y可以选自如下列取代基团中的一种:
Figure RE-GDA0001949660780000032
Figure RE-GDA0001949660780000033
其中X与Y可以是相同的取代基团或是不同的取代基团。因此，当取代单元X为
Figure RE-GDA0001949660780000041
则取代单元Y可以与取代单元X具有如式(1)所表示的相同的取代基团:
Figure RE-GDA0001949660780000042
于另一实施例，当取代单元X为
Figure RE-GDA0001949660780000043
取代单元Y可以是
Figure RE-GDA0001949660780000044
Figure RE-GDA0001949660780000045
其中任一个取代基团。而于上述式(5)中，Z1,Z2分别为取代单元，Z1,Z2的取代基团可以是如苯基、芳香烃衍生物或是烷基，其中Z1,Z2可以是相同的取代基团或是不同的取代基团。
因此，根据式(I)的通式、取代单元R1,R2、取代单元X,Y及取代单元 Z1,Z2任意合成之后可以得到如下式(8)-式(81)结构式：
Figure RE-GDA0001949660780000046
Figure RE-GDA0001949660780000051
Figure RE-GDA0001949660780000061
Figure RE-GDA0001949660780000071
Figure RE-GDA0001949660780000081
Figure RE-GDA0001949660780000091
以上所述仅为本发明的较佳实施例，并非用以限定本发明的权利要求；同时以上的描述，对于相关技术领域的专门人士应可明了及实施，因此其它未脱离本发明所揭示的精神下所完成的等效改变或修饰，均应包含在权利要求范围中。

Claims (5)

1.一种用于有机发光器件的化合物，其特征在于，所述化合物具有如式(I)通式的结构式:
Figure FDA0001910836580000011
其中R1,R2为取代单元，所述R1及所述R2选自如下列取代基团中的一种:二甲基吖啶基、芴基、螺二芴基、咔唑基、芳胺基、吩噻嗪基、吩恶嗪类基和吲哚类基和氢原子，且所述R1及所述R2可相同或是不同的取代基团。
2.如权利要求1所述的用于有机发光器件的化合物，其特征在于，所述n为所述R1及所述R2在所述式(I)中的苯环上可取代的数量，其中n为1-4的整数。
3.如权利要求1所述的用于有机发光器件的化合物，其特征在于，所述式(I)中的所述X及所述Y为取代单元，所述X及所述Y可选自如下列取代基团中的一种:
Figure FDA0001910836580000012
Figure FDA0001910836580000013
4.如权利要求1或3所述的用于有机发光器件的化合物，其特征在于，所述式(I)中的所述X及所述Y可以是相同的取代基团或是不同的取代基团。
5.如权利要求3所述的用于有机发光器件的化合物，其特征在于，所述Z1及所述Z2为取代单元，所述Z1及所述Z2为苯基、芳香烃衍生物或是烷基，且所述Z1和所述Z2可以是相同的取代基团或是不同的取代基团。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111171012A (zh) * 2019-03-21 2020-05-19 广东聚华印刷显示技术有限公司 热活化延迟荧光材料及其制备方法和有机电致发光器件
CN112574187A (zh) * 2020-12-17 2021-03-30 上海和辉光电股份有限公司 一种用于有机发光的化合物及其应用

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104592194A (zh) * 2015-01-04 2015-05-06 华南理工大学 一种噻蒽氧化物-芳香胺有机发光小分子及制备与应用
CN106831744A (zh) * 2016-12-30 2017-06-13 上海天马有机发光显示技术有限公司 一种有机电致发光材料以及有机光电装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104592194A (zh) * 2015-01-04 2015-05-06 华南理工大学 一种噻蒽氧化物-芳香胺有机发光小分子及制备与应用
CN106831744A (zh) * 2016-12-30 2017-06-13 上海天马有机发光显示技术有限公司 一种有机电致发光材料以及有机光电装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111171012A (zh) * 2019-03-21 2020-05-19 广东聚华印刷显示技术有限公司 热活化延迟荧光材料及其制备方法和有机电致发光器件
CN112574187A (zh) * 2020-12-17 2021-03-30 上海和辉光电股份有限公司 一种用于有机发光的化合物及其应用

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