物理化学学报 >> 2015, Vol. 31 >> Issue (3): 552-558.doi: 10.3866/PKU.WHXB201501051

光化学和辐射化学 上一篇    下一篇

抗菌医药左氧氟沙星在有机电致发光二极管中的应用

苗艳勤1,3, 高志翔2, 武钰铃1,3, 杜晓刚1,3, 李源浩1,3, 刘慧慧1,3, 贾虎生1,4, 王华1,3, 刘旭光5   

  1. 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. 山西大同大学物理与电子科学学院, 山西 大同 037009;
    3. 太原理工大学新材料工程技术研究中心, 太原 030024;
    4. 太原理工大学材料科学与工程学院, 太原 030024;
    5. 太原理工大学化学化工学院, 太原 030024
  • 收稿日期:2014-10-27 修回日期:2015-01-04 发布日期:2015-03-06
  • 通讯作者: 贾虎生, 王华 E-mail:jia_husheng@126.con;wanghua001@tyut.edu.cn
  • 基金资助:

    教育部新世纪人才计划(NCET-13-0927), 科技部国际科技合作专项项目(2012DFR50460), 国家自然科学基金(61307029, 21101111)和山西省科技创新重点团队项目(2012041011)资助

Antimicrobial Drug Levofloxacin Applied to an Organic Light-Emitting Diode

MIAO Yan-Qin1,3, GAO Zhi-Xiang2, WU Yu-Ling1,3, DU Xiao-Gang1,3, LI Yuan-Hao1,3, LIU Hui-Hui1,3, JIA Hu-Sheng1,4, WANG Hua1,3, LIU Xu-Guang5   

  1. 1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
    2. School of Physical Science and Electronics, Shanxi Datong University, Datong 037009, Shanxi Province, P. R. China;
    3. Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
    4. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
    5. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
  • Received:2014-10-27 Revised:2015-01-04 Published:2015-03-06
  • Contact: JIA Hu-Sheng, WANG Hua E-mail:jia_husheng@126.con;wanghua001@tyut.edu.cn
  • Supported by:

    The project was supported by the Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-13-0927), International Science & Technology Cooperation Program of China (2012DFR50460), National Natural Science Foundation of China (61307029, 21101111), and Shanxi Provincial Key Innovative Research Team in Science and Technology, China (2012041011).

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摘要：

左氧氟沙星(LOFX)是一种知名的抗菌药物, 它的价格非常便宜, 且有成熟的合成和纯化技术. 本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中. 通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详细地表征了LOFX的热学及光物理特性. LOFX有高的分解温度,为327 ℃; HOMO、LUMO能级分别为-6.2 和-3.2 eV, 光学带隙为3.0 eV. 以LOFX作为客体材料, 掺杂在主体材料4,4'-二(9-咔唑)联苯(CBP)中制备了蓝光OLED, 该器件的电致发光(EL)发射峰位于452 nm, 最大亮度为2315 cd·m-2. 进一步, 选择8-羟基喹啉铝(Alq3)作为参考材料, 分别以LOFX和Alq3作为电子传输材料制备了结构相同的单载流子器件和绿色磷光OLED. 在相同的电压下, 以LOFX作为电子传输材料的单载流子器件的电流密度比以Alq3作为电子传输材料的单载流子器件更高. 同时, 以LOFX作为电子传输材料的绿色磷光OLED获得更高的器件效率. 从这些EL性能可以看出, LOFX同时也是一很好的电子传输材料.

关键词: 有机电致发光器件, 左氧氟沙星, 蓝光发光材料, 电子传输材料, 电致发光光谱, 电致发光性能

Abstract:

Levofloxacin (LOFX) is a well-known and inexpensive antimicrobial drug that can be easily synthesized and purified. We report the first application of LOFX to an organic light emitting diode (OLED). Its thermal and photophysical properties were thoroughly investigated using thermogravimetric analysis (TGA), UV-Vis absorption spectra, emission spectra, and cyclic voltammetry. LOFX has HOMO and LUMO energies of -6.2 and -3.2 eV, respectively, and high molecule decomposition temperature (Td) of 327 ℃. An OLED with a LOFX emitter shows electroluminescence (EL) at 452 nm and maximum luminance of 2315 cd·A-1, which can be used in a white OLED. To investigate the electron transporting ability of LOFX, an electron-carrier only OLED was made. In addition, a green OLED based on Ir(ppy)3 (fac- tris(2-phenylpyridine)iridium) with electron transporting layer of LOFX was made, comparing with that with electron transporting layer of tris(8-hydroxyquinoline) aluminum (Alq3). The former exhibited higher device efficiencies than that of the latter. The results show that LOFX has a higher electron transport ability than Alq3.

Key words: Organic light-emitting diode, Levofloxacin, Blue-light emitting material, Electron transport material, Electroluminescence spectrum, Electroluminescence performance