一种Y型噻吨酮-咔唑分子的设计、合成及其蓝光和黄光有机发光二极管应用
Design and Synthesis of a Y-Type Thioxanthone-Carbazole for the Application in Blue and Yellow Organic Light-Emitting Diodes
孙静 1樊志杰 2杜纪宽 2李硕 2苗艳勤 1赵波 2董海亮 1王华2
作者信息
- 1. 太原理工大学 新材料界面科学与工程教育部重点实验室 太原 030024;山西浙大新材料与化工研究院 太原 030024
- 2. 太原理工大学 新材料界面科学与工程教育部重点实验室 太原 030024
- 折叠
摘要
采用噻吨酮作为受体,9,9'-(1,3.苯基)二-9H-咔唑作为给体,设计合成了一种Y型分子,命名为TX-Ph2Cz.化合物在稀释的溶液中展示了位于420 nm处的蓝光发射,且其发射峰在不同极性的溶剂中基本不变.在四氢呋喃/水的混合溶剂中,随着含水量的增加发射峰红移了 36 nm.从其单晶结构中可以看出化合物具有很多分子间相互作用,分子间的π…π作用有助于实现分子间的电荷转移.化合物TX-Ph2Cz在掺杂器件(质量分数3％)中展示了位于440 nm的蓝光峰,而在非掺杂器件中则展示了位于540 nm处的黄光峰,这是因为在薄膜中化合物自身形成了电致激基缔合物.同时,非掺杂器件展示了更好的电致发光性能,最大电流效率和最大外量子效率分别达到4.91 cd/A和2.64％.
Abstract
A Y-shaped emitter,TX-Ph2Cz,was designed and synthesized,which uses a thioketone unit as the acceptor and 9,9'-(1,3-phenylene)bis-9H-carbazole as the donor.The compound exhibited blue emission at about 420 nm in diluted solution and a small change in the different solvents with various polarities.In the mixed tetrahydrofuran(THF)/H2O solvents,emission bands had a red shift of 36 nm with the increased content of water.According to the single crystal structure,TX-Ph2Cz showed many intermolecular interaction and the π…π interaction between adjacent molecules would increase the intermolecular charge transfer.Critically,TX-Ph2Cz exhibited blue emission(440 nm)in the doped device,but yellow emission(540 nm)in the non-doped device was originated from the excimer of TX-Ph2Cz.Moreover,the maximum current efficiency and external quantum efficiency of non-doped device were 4.91 cd/A and 2.64％,respectively.
关键词
有机发光二极管(OLED)/噻吨酮-咔唑/Y型结构/激基缔合物Key words
organic light-emitting diode(OLED)/thioxanthone-carbazole derivatives/Y-type structure/excimer引用本文复制引用
基金项目
国家自然科学基金(62074109)
国家自然科学基金(6207031407)
国家自然科学基金(U21A20492)
山西省科技创新人才队伍建设项目(202204051001013)
出版年
2024
NETL
NSTL
万方数据