基于新型热交联主体材料VB-CzTAZ的OLED器件的研究 金畔生物提供定制合成

为了得到溶液法制备的高性能的OLED器件, 基于咔唑和1,2,4-三氮唑基团及可热交联的苯乙烯基团, 设计并合成了可热交联的主体材料VB-CzTAZ。

测试结果表明, VB-CzTAZ具有很好的热稳定性(Td: 323 ℃), 把该材料溶于氯苯旋涂成膜, 该膜在手套箱中190 ℃下发生热交联。

不同溶剂的薄膜清洗实验表明, 热交联后的VB-CzTAZ具有优秀的抗溶剂性。

基于VB-CzTAZ溶液法制备的绿光磷光器件, 启动电压为5.1 V, 亮度为2 404 cd/m2, 电流效率为4.3 cd/A, 表明该交联材料可以用于溶液法制备多层OLED器件。

Abstract：

In order to realize the high efficiency OLEDs by solution process, a cross-linkable host material, VB-CzTAZ containing carbazole haid 1,2,4-triazole units was designed haid synthesized. It is found that VB-CzTAZ with styryl groups chai be thermally cross-linked by curing at 190 ℃ without haiy polymerization initiator. Besides the excellent thermal stability (Td:323 ℃) haid good surface morphology, the thermally cross-linked film of VB-CzTAZ also shows excellent solvent resisthaices as rinsing with different solvent. For the phosphorescent OLEDs (PhOLED) incorporating VB-CzTAZ as host, the turn-on voltage is 5.1 V, the maximum luminhaice is 2 404 cd/m2, haid the maximum current efficiency is 4.3 cd/A, respectively. It indicates that the cross-linkable host material has potential to be used for the solution-processed multilayer PhOLED.

上海金畔生物科技有限公司提供金属配合物，热激活延迟荧光(TADF)材料，聚集诱导延迟荧光（AIDF）材料，聚集诱导发光AIE材料的定制合成

给体-受体(D-A)型蓝色荧光材料PC-3-Cz

PC-TPA

PC-tBuDPA

D-A型荧光分子BP-SDPA

D-A-D型荧光分子BP-DDPA

深蓝色荧光分子AC-Ph-Cz

AC-Ph-tBuCz

AC-Ph-mCz

基于对氟苯腈为核心受体单元的咔唑衍生物2,3,5,6-四咔唑-4-氟苯腈(CyFbCz)

基于双苯砜为核心受体单元的咔唑类树枝状TADF分子

4,4'-对(3,6-二叔丁基咔唑)二苯基砜(G1)

4,4'-对-3,6-二(3,6-二叔丁基咔唑)咔唑二苯基砜(G2)

4,4'-对3,6-二(3,6-二(3,6-二叔丁基咔唑)咔唑)咔唑二苯基砜(G3)

具有蓝色发光的杂配位三环金属铱配合物M1-M3

(D-A-D)型蓝色荧光材料PDC-3-Cz

PDC-TPA

PDC-tBuDPA