THE DESIGN OF MATERIALS FOR OLEDS ACCORDINGTO THE CONCEPT OF SIMPLE STRUCTURE MOLECULAR

根据简单结构分子的概念设计OLED材料

• 批准号: 12450389
• 负责人: TSUTSUI Tetsuo
• 金额: $ 1.98万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450389/
• 关键词: Organic Thin Films; Electroluminescence; Emissive Properties; Charge Transport; Dye Molecules; Conjugated Polymers; Molecular Structure; Simple Chemical Structure; 簡素分子構造; キャリア移動度; Time-of-Flight法; 空間電荷制限電流法; 電界効果トランジスタ法; エレクトロルミネッセンス; 発光材料

One of the traditional research targets for molecular design of organic materials for electronics applications has been the molecular design of the most complicated and sophisticated molecular structures that contain varieties of functionalities in single molecule. In contrast, in real organic electronic devices, like organic light-emitting diodes, simple dyes and polymers with quite simple chemical structures have been utilized. Thus, detailed investigation of the validity of traditional molecular design concept, and proposal of a new concept, which we call here the concept of design of the simplest chemical structure, is performed. Evaluation of charge carrier mobility in thin organic films and polymer films has been performed as one of typical examples. A time-of-flight method, a space-charge-limited current method and a thin-film field-effect transistor method were adopted, and experimentally obtained charge mobility values were compared and discussed. Conjugated polymers with main-chain conjugated phenylenevinylene skeleton and attached solubilizing groups have been designed and synthesized. Light-emitting diodes and thin-film transistors were fabricated and their device performances were observed. The results have been discussed in terms of the concept of designing of the simplest chemical structures.

电子应用有机材料分子设计的传统研究目标之一是在单个分子中包含多种功能的最复杂和最精密的分子结构的分子设计。相比之下，在真正的有机电子器件中，如有机发光二极管，使用的是化学结构非常简单的简单染料和聚合物。因此，对传统分子设计概念的有效性进行了详细的研究，并提出了一个新的概念，我们称之为最简单化学结构的设计概念。评价有机薄膜和聚合物薄膜中的载流子迁移率是一个典型的例子。采用飞行时间法、空间电荷限制电流法和薄膜场效应晶体管法，对实验得到的电荷迁移率值进行了比较和讨论。设计并合成了具有主链共轭苯乙烯骨架和附加增溶基团的共轭聚合物。制备了发光二极管和薄膜晶体管，并对其器件性能进行了观察。从设计最简单化学结构的概念出发，对结果进行了讨论。