论文总字数：38854字

摘 要

本科生签名： 导师签名： 日期：

摘 要

摘 要

小分子有机电致发光器件（OLEDs）具有结构构造简单、制作容易且成本低廉、可实现在超极端温度下使用以及柔性大面积平板显示等优势，是有机光电功能材料研究中的一个重要组成部分，具有很强的使用价值。

有机电致发光器件(Organic light-emitting diodes，OLEDs)是新兴的显示照明技术，具备很多优点，如可实现柔性显示、自主发光无需背光源、视角超宽、可以在极端环境下使用、无延迟而被认为是未来平板显示的新秀, 正是由于OLEDs具有如此之多的优点，使其处于科研工作者的研究浪潮的风口浪尖。要实现全色显示,能发RGB三原色光的材料是必不可少的,目前可适用于高性能的有机电致发光器件的绿光材料已经实现,而红光和蓝光材料,因效率低、寿命短等问题,尚未得到很好解决。

本论文设计、合成了一系列小分子具有双极传输特性的主体材料，主要研究了该类材料的热稳定性、成膜特性、以及发光性能，并且对这类材料进行对比，以期归纳总结出这类材料的通性，为后来再设计此类材料做出指导、铺垫。研究内容如下：

咔唑基团因其优秀的空穴传输能力而著称,是一个非常常用也是非常重要的空穴传输材料，而二苯并硫砜因为含有电负性大的硫原子而可以作为电子传输基团,本论文双级主体分子的设计想法就是将以上经典空穴传输基团和传统电子传输基团结合在一起,从而实现一种新主体材料具有很好的“双极传输特性”。

本文就是基于苯硫砜良好的光电性质，通过在其3,6或2,7位上进行取代修饰然后引入官能团。合成了功能化的苯硫砜衍生物，并研究对比了他们的性能。具体的研究过程通过偶联合成叔丁基三咔唑和溴代二苯并硫砜。对目标产物做了核磁、紫外和荧光的测试分析，证实了所得到的产物以及其具有的优异的光物理性能。

关键词：双极，有机小分子，主体材料，OLEDs。

Abstract

Abstract

Small molecule organic electroluminescent devices (OLEDs) has a simple structure, easy fabrication and low cost, can be realized in use under extreme temperature super flexible display advantages of large area flat-displays and flexible display. It is one of most important component part of the study In organic photoelectric functional material, have very strong value.

Organic electroluminescent devices (OLEDs)  can achieve low driving voltage, high staightness of autonomous shine, ultra wide angle of view, without delay and it is considered of the future flat display lighting, therefore has been catched widely research attention. To realize full color display,the material which can send RGB trichromatic light is indispensable, the current can be applied to high performance of organic electroluminescent devices of green materials is implemented, and the red and blue light material, Due to such problems as low efficiency, short service life, has not been well solved.

This paper design and synthesis of a series of small molecules with bipolar transport characteristics, the main research is mainly focused on the thermal stability, film forming characteristics of this materials and luminescence properties, and compares with this kind of material in order to sum up the connectivity of this kind of material, make guidance for later design of such materials, The research content is as follows:

Carbazole groups have good hole transmission performance, and  diphenyl sulfone is electronic transport groups, molecular design idea of this article is to more than hole-transporting and electronic transmission reactive together, so as to realize a new material with "bipolar transfer characteristic"to be the host of the OLEDs.

Benzene sulfur sulfone compounds with rigid structure, wide energy gap, at the same time both good film-forming property, stability, and the appropriate carrier transmission characteristics, all of this, much attention has been paid to make it make it in organic electroluminescent devices has the very good application value and good application prospect.

This article is based on benzene sulfur sulfone good electro-optical properties, through its replace modification on the 3, 6 or 2, 7 bits and introduction of functional groups.Synthesis of functional sulfur sulfone benzene derivatives, study and compared the performance of them.

Specific research process by accidentally united into tertiary butyl three carbazole and brom-ine generation of diphenyl sulfone and sulfur.Do to target product nuclear magnetic test, uv and f-luorescence analysis, confirmed the resulting product and it has excellent optical properties.

Keywords:  Bipolar, Organic small molecules, Host, OLEDs.

目 录

目 录

摘 要 ...........................................................................................................................................I

Abstract ..................................................................................................................................... II

目 录 ........................................................................................................................................ III

第一章 绪论 .............................................................................................................................. 1

1.1 引言 .............................................................................................................................. 1

1.2小分子有机OLEDs器件的原理及结构.................................................................... 2

1.2.1 有机电致发光原理........................................................................................... 2

1.2.2 有机电致发光器件结 构.................................................................................. 3

1.3 有机小分子发光材料 ............................................................................................... 5

1.3.1 OLEDs磷光主体材料 ..................................................................................... 5

1.3.2 OLEDs电子传输材料 ..................................................................................... 7

1.3.3 OLEDs磷光客体材料 ................................................................................... 8

1.3.4 OLEDs空穴传输材料 .................................................................................. 10

第二章 基于 2,7和3,6位溴代苯硫砜和咔唑的双极主体材料的合成及性能研究

.................................................................................................................................................. 12

2.1 研究背景 ................................................................................................................... 12

2.2 实验仪器与试剂 ....................................................................................................... 13

2.2.1 主要试剂 ........................................................................................................ 13

2.2.2 主要仪器 ........................................................................................................ 14

2.3 目标分子合成路线 ................................................................................................... 14

2.4光物理性能研究 ........................................................................................................ 23

2.5量子化学理论计算 .................................................................................................... 27

2.6 本章小结 ................................................................................................................... 29

第三章 结论 ............................................................................................................................ 30

参考文献 .................................................................................................................................. 31

攻读本科期间研究成果 .......................................................................................................... 39

剩余内容已隐藏，请支付后下载全文，论文总字数：38854字