Three series pi-extended fluorescent compounds based on dehydroabietic acid triarylamine moiety: Syhthesis, photophysical properties and hole transporting properties
Three series pi-extended fluorescent compounds based on dehydroabietic acid triarylamine moiety: Syhthesis, photophysical properties and hole transporting properties
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基于脱氢松香酸三芳胺部分的三系列π-延伸荧光化合物：合成、光物理性能和空穴传输性能
DOI：
10.1016/j.dyepig.2020.108551
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发表时间：
2020
影响因子：
4.5
通讯作者：
Gao Hong
中科院分区：
文献类型：
--
作者：
Tan Guanni;Song Jie;Zhang Xinwen;Gao Yanan;Shang Shibin;Song Zhanqian;Gao Hong
基于脱氢松香酸骨架的荧光化合物具有良好的光物理性能，有望作为有机电致发光二极管(OLED)的空穴传输层。在本工作中，我们通过C-C偶联反应将多环芳烃(PAHs)连接到脱氢松酸基三芳胺上，合成了三个系列化合物(共15个)：系列1(1a-1e)、系列2(2a-2e)和系列3(3a-3e)。这三个系列的化合物具有紫外吸收、荧光发射、电化学性质和热学性质，以及最高的分子轨道能级和能隙，使它们适合用作空穴传输材料。采用1a、2a或3d作为空穴传输层的OLED在最大亮度、开启电压、最大外量子效率、最大发光效率和功率效率方面都比基于传统空穴传输材料的同类器件表现出更好的性能。尤其是1A的器件表现出了最有希望的性能，其最大亮度为21445×cd/m2，低开启电压为2.8nV，最大外量子效率为1.62%，最大发光效率为4.9cd/A，最大功率效率为3.7lm/W。本工作突出了基于脱氢松香酸的π扩展化合物在发光材料应用中的潜力。
Fluorescent compounds based on a dehydroabietic acid skeleton with favorable photophysical properties show promise for use as the hole-transporting layer in organic light-emitting diodes (OLEDs). In this work, we report the synthesis of three series of compounds (15 in total), series 1 (1a–1e), series 2 (2a–2e), and series 3 (3a–3e), by linking polycyclic aromatic hydrocarbons (PAHs) to dehydroabietic acid-based triaryamine moiety through C-C coupling reactions. The three series of compounds exhibited ultraviolet absorption, fluorescence emission, electrochemical, and thermal properties, as well as highest occupied molecular orbital levels and energy gaps that made them suitable for use as hole-transporting materials. OLEDs with1a,2a, or3das a hole-transporting layer showed better performance in terms of maximum brightness, turn-on voltage, maximum of external quantum efficiency, maximum luminous efficiency and power efficiency than that of a comparable device based on a conventional hole-transporting material. In particular, the device with1aexhibited the most promising performance, with a high maximum brightness of 21445 cd/m2, low turn-on voltage of 2.8 V, maximum of external quantum efficiency of 1.62%, maximum luminance efficiency of 4.9 cd/A, and maximum power efficiency 3.7lm/W. The present work highlights the potential of π-extended compounds based on dehydroabietic acid for use in luminescent material applications.