几种空穴传输材料的合成及电化学性能研究

发布时间：2018-03-07 16:06

本文选题：有机电致发光材料　切入点：空穴传输材料　出处：《郑州大学》2017年硕士论文　论文类型：学位论文

【摘要】：1987年邓青云博士首次利用有机分子材料制得有机发光二极管(OLED),成功实现了绿光的发射。此后,有机电致发光材料的研究引起了各国科学家的关注,成为了学术界和产业界研究热点。随着有机发光技术的不断发展,有机电致发光器件的亮度、效率和寿命都需要进一步的提高,对材料的要求也再不断提高。空穴传输材料在多种光电转换器件中扮演着重要的角色,设计合成新型有机空穴材料仍然是非常重要的课题。本论文将三苯胺、咔唑和芴结构分子通过偶联反应连接起来,设计合成了六个新型空穴传输材料分子。目标化合物经过五步合成,以2,5-二溴硝基苯与苯硼酸为起始原料,经过Suzuki偶联反应、Cadogan还原环闭合反应、Ullmann反应、Buchwald-Hartwig反应,得到最终的目标化合物。并通过核磁1H NMR、核磁13C NMR、红外、质谱等技术进行了结构确认和表征。研究了合成空穴传输材料光电化学性能,分别对热稳定性、紫外-可见吸收光谱、荧光光谱和氧化还原电位进行了测定。结果发现,该六个化合物分子均具有较高的玻璃化温度Tg,具有高的热稳定性;化合物分子具有大的π-π共轭体系,使得紫外吸收光谱和荧光发射光谱发生红移,荧光发射波长均处在紫光区,可用作紫光发光材料;根据化合物分子的氧化还原电位,计算出化合物分子的带隙Eg、HOMO和LUMO值,六个化合物分子均具有较高的HOMO能级值,有利于空穴的传输,可以应用为性能良好的空穴传输材料。
[Abstract]:In 1987, Dr. Deng Qingyun first produced an organic light-emitting diode (OLED) using organic molecular materials, which successfully realized the green light emission. Since then, the research of organic electroluminescent materials has attracted the attention of scientists all over the world. With the development of organic luminescence technology, the brightness, efficiency and lifetime of organic electroluminescent devices need to be further improved. The requirements for the materials are also increasing. Hole transport materials play an important role in many optoelectronic conversion devices. The design and synthesis of new organic hole materials is still a very important subject. In this paper, trianiline, trianiline, trianiline, trianiline, trianiline, trianiline, Six novel hole-transport material molecules were designed and synthesized by coupling of carbazole and fluorene structure molecules. The target compounds were synthesized in five steps, and the starting materials were 2 ~ (5) -dibromo-nitrobenzene and phenylboric acid. The final target compound was obtained by the Suzuki coupling reaction and the Ullmann reduction ring closure reaction, Buchwald-Hartwig reaction. The final target compound was obtained by 1H NMR, 13C NMRs, IR, NMR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, IR, The structure was confirmed and characterized by mass spectrometry. The photochemical properties of the synthesized hole-transport materials were studied. The thermal stability, UV-Vis absorption spectrum, fluorescence spectrum and redox potential were determined respectively. The six compounds have high glass transition temperature (Tg) and high thermal stability, and the compounds have a large 蟺-蟺 conjugate system, which results in the red shift of UV absorption spectrum and fluorescence emission spectrum, and the fluorescence emission wavelength is in the purple region. According to the redox potential of compound molecules, the band-gap egg-Homo and LUMO values of compound molecules are calculated. The six compounds have higher HOMO energy level, which is beneficial to the transport of holes. It can be used as a hole transport material with good performance.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB34

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