含氮杂环基苝酰亚胺类电子传输材料的研究-材料科学与工程专业论文.docxVIP

浙江大学硕士论文带隙的影响完全消失，但是保留了降低LUMO能级的优点．对比研究了DoPP与 浙江大学硕士论文 带隙的影响完全消失，但是保留了降低LUMO能级的优点．对比研究了DoPP与 DoMP在空气中的热稳定性，发现在引入长链烷基之后，两种花酰亚胺在空气中 的热稳定性和抗氧化性大大降低． 研究了不同溶剂、不同温度对DoMP溶液铸膜聚集态的影响．通过紫外一可 见光谱测试与显微镜观测，发现易挥发的氯仿溶液得到的溶液铸膜是无序的薄 膜结构，而加入难挥发的DMF之后，薄膜有序性大大增加．同时发现在不超过 150℃时，随着温度的增加，所得到的溶液铸膜的紫外图谱基本没有变化，表明 其聚集态结构基本类似．但显微镜形貌图显示晶粒尺寸随着温度增加而增大． 关键词：有机场效应晶体管，电子传输，空气稳定性，溶解性，花酰亚胺，嘧啶基， 长链烷基 U 浙江大学硕士论文Abstract 浙江大学硕士论文 Abstract Witll the rapid developments of organic optoeleetronic devices,such as light-emitting diodes(OLEDs)，field-effect transistors，and solar cells,it bcco嶙all impending need to develop organic electron-Wansport(n-type)materials with hJ曲 mobility,good stability in air and solution processing．In this dissertation,based on molecular and material designs，electron-deficient nitrogen heterocycles wffre introduced to the traditional organic n-typo materials ofperylene diimides．The effects of nitrogen heterocycle groups on energy levels，electron-accepting ability and stability wele investigated in details．The unsymmetrical perylene diimides were also prepared by chemical modification,in order to obtain the organic semiconductor materials possessing high performance and solution processing． First of all，a series of nitrogen heterocycle substituted perylene diimides were synthesized through the nucleophilic reactions between 3,4，9，lO-perylene tetracaboxylic dianhydride(PTCDA)and heterocyclic amines：N．N’-dipyrimidinyl- 3,4，9，10一perylenetetracarboxylic diimide(DMP)，N，N’-dipyrazinyl一3 4 9 lO-perylene tetracarboxylic diimide(DZP)，and N，N’-dichioropyridazinyl-3 4 9 10一perylene tetracarboxylic diimide(DDP)．Their molecular structures were characterized by FTIR spectra and elemental analysis． The influence of pyrimidinyl group on the energy levels of perylene diimides was investigated though LW-Vis absorption and cyclic voltammetry(CV)．The results indicated that the introduction of pyrimidinyl to perylene diimides lowered the LUMO energy level and resulted in a little red shift of its absorpti