含TTF单元的小分子有机场效应晶体管材料的合成及其性能研究

发布时间：2018-04-05 10:09

本文选题：有机场效应晶体管　切入点：四硫富瓦烯　出处：《延边大学》2015年硕士论文

【摘要】：有机场效应晶体管(organic field effect transistors, OFETs)是有机电子器件中的一个重要组成部分。由于其成本低廉、易于大面积制备、机械柔韧性好、性能好等特点引起了人们极大的兴趣。OFETs的应用有整合电路、显示器、射频识别卡(RFID)、有机传感器、有机存储器等。近来,在有机半导体和操作技术上的发展已经使得有机场效应晶体管的性质有了很大的提升,其迁移率已经超过了1.0cm2V-1s-1。 TTF及其衍生物,在有机电荷转移材料或者有机自由基盐中作为电子给体,在有机导体、超导体领域被广泛的研究。另一方面TTF衍生物也有一些很好的性质可以应用在有机场效应晶体管材料中。本论文设计合成了基于TTF单元的小分子有机场效应晶体管材料,主要研究内容包括以下两部分内容：1、设计合成了一类具有吸电子端基侧链的苯并双TTF单元小分子化合物1-3,化合物1单晶结构表明呈现出很好的平面结构,引入具有吸电子性质的烷氧羰基烷基链,这样的策略对于热稳定性、堆积结构都起到了很大的作用。相比其类似物,用氧化电位计算了其HOMO能级大约有0.2 eV的提高,其迁移率最高达到了0.057 cm2/v·s。2、设计合成了以哒嗪并TTF为基本骨架的T型有机共轭体,在其哒嗪的两端引入苯环的基础上增加了具有不同能力给电子、吸电子能力的二硫富瓦烯结构的小分子7a-7c,分子的HOMO/LUMO轨道能级分别在-4.88～-5.04 eV和-3.74～-3.9 eV是比较适合于有机场效应晶体管的研究,但遗憾的是在其器件测试方面表现出很差的性能。
[Abstract]:Organic field effect transistors (OFETs) are an important part of organic electronic devices.Because of its low cost, easy to be prepared in large area, good mechanical flexibility and good performance, the applications of OFETs include integrated circuits, displays, RFID cards, organic sensors, organic memory and so on.Recent developments in organic semiconductors and operating technologies have greatly improved the properties of field-effect transistors, with mobility exceeding 1.0 cm2V-1s-1.TTF and its derivatives, as electron donors in organic charge transfer materials or organic free radical salts, have been widely studied in the field of organic conductors and superconductors.On the other hand, TTF derivatives also have some good properties which can be used in FET materials.In this thesis, we have designed and synthesized a small molecular field-effect transistor material based on TTF cell.The main research contents include the following two parts: 1: 1. A class of small molecular compounds of benzo double TTF unit with side chain of adsorbed electron are designed and synthesized. The single crystal structure of compound 1 shows a good planar structure.The introduction of alkoxy carbonyl alkyl chains with electron-absorbing properties plays an important role in thermal stability and stacking structure.Compared with its analogues, the HOMO energy level was increased by 0.2eV with the highest mobility of 0.057 cm2/v s.2.The T-type organic conjugate with pyridazine and TTF as the basic skeleton was designed and synthesized.On the basis of the introduction of benzene rings at both ends of the pyridazine, the electrons with different abilities are added.The HOMO/LUMO orbital energy levels of 7a-7c, -4.88 ~ 5.04 EV and -3.74 ~ 3.9eV, respectively, are suitable for the study of field-effect transistors. However, it is a pity that they have poor performance in the device testing of the small molecule 7a-7c with dithiafulvalene-structure, and the HOMO/LUMO orbital energy levels of the molecule are -4.88 ~ 5.04 EV and -3.74 ~ 3.9eV, respectively.
【学位授予单位】：延边大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN386

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