基于新型熱交聯(lián)主體材料VB-CzTAZ的OLED器件的研究 pg電子官方生物提供定制合成

為了得到溶液法制備的高性能的OLED器件, 基于咔唑和1,2,4-三氮唑基團(tuán)及可熱交聯(lián)的苯乙烯基團(tuán), 設(shè)計(jì)并合成了可熱交聯(lián)的主體材料VB-CzTAZ。

測試結(jié)果表明, VB-CzTAZ具有很好的熱穩(wěn)定性(Td: 323 ℃), 把該材料溶于氯苯旋涂成膜, 該膜在手套箱中190 ℃下發(fā)生熱交聯(lián)。

不同溶劑的薄膜清洗實(shí)驗(yàn)表明, 熱交聯(lián)后的VB-CzTAZ具有優(yōu)秀的抗溶劑性。

基于VB-CzTAZ溶液法制備的綠光磷光器件, 啟動(dòng)電壓為5.1 V, 亮度為2 404 cd/m2, 電流效率為4.3 cd/A, 表明該交聯(lián)材料可以用于溶液法制備多層OLED器件。

Abstract：

In order to realize the high efficiency OLEDs by solution process, a cross-linkable host material, VB-CzTAZ containing carbazole and 1,2,4-triazole units was designed and synthesized. It is found that VB-CzTAZ with styryl groups can be thermally cross-linked by curing at 190 ℃ without any polymerization initiator. Besides the excellent thermal stability (Td:323 ℃) and good surface morphology, the thermally cross-linked film of VB-CzTAZ also shows excellent solvent resistances 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 luminance is 2 404 cd/m2, and 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.

西安pg電子官方生物科技有限公司提供金屬配合物，熱激活延遲熒光(TADF)材料，聚集誘導(dǎo)延遲熒光（AIDF）材料，聚集誘導(dǎo)發(fā)光AIE材料的定制合成

給體-受體(D-A)型藍(lán)色熒光材料PC-3-Cz

PC-TPA

PC-tBuDPA

D-A型熒光分子BP-SDPA

D-A-D型熒光分子BP-DDPA

深藍(lán)色熒光分子AC-Ph-Cz

AC-Ph-tBuCz

AC-Ph-mCz

基于對(duì)氟苯腈為核心受體單元的咔唑衍生物2,3,5,6-四咔唑-4-氟苯腈(CyFbCz)

基于雙苯砜為核心受體單元的咔唑類樹枝狀TADF分子

4,4'-對(duì)(3,6-二叔丁基咔唑)二苯基砜(G1)

4,4'-對(duì)-3,6-二(3,6-二叔丁基咔唑)咔唑二苯基砜(G2)

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

具有藍(lán)色發(fā)光的雜配位三環(huán)金屬銥配合物M1-M3

(D-A-D)型藍(lán)色熒光材料PDC-3-Cz

PDC-TPA

PDC-tBuDPA

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小編zhn2022.01.20