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

作　　者：孙静[1,2] 樊志杰 杜纪宽 李硕 苗艳勤 赵波[1] 董海亮 王华 Sun Jing;Fan Zhijie;Du Jikuan;Li Shuo;Miao Yanqin;Zhao Bo;Dong Hailiang;Wang Hua(Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024;Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan,030024)

机构地区：[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 [2]山西浙大新材料与化工研究院,太原030024

出　　处：《有机化学》2024年第4期1210-1217,共8页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(Nos.62074109,6207031407);国家自然科学基金委联合基金(No.U21A20492);山西省科技创新人才队伍建设(No.202204051001013)资助项目。

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%.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 theπ…πinteraction 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 

分 类 号：TN383.1[电子电信—物理电子学] O626[理学—有机化学]