Explore Synthesis and Structural Determination of Crystalline Supramolecular Polyaniline Thin-Films and 2D Polyanilines Assisted by Electron Diffraction and TEM Imaging

电子衍射和 TEM 成像辅助探索结晶超分子聚苯胺薄膜和二维聚苯胺的合成和结构测定

• 批准号: 426572620
• 负责人: Professor Dr. Xinliang Feng
• 金额: --
• 依托单位: Zentrale Einrichtung Elektronenmikroskopie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/426572620?language=en
• 关键词: Explore; Synthesis; Structural; Determination; Crystalline

The development of linear polyaniline conducting polymer into two-dimensional (2D) structure has attracted much attention for electronic devices because of the unique 2D features as well as facile device integration, high charge transport and high-performance stability. However, the achievement of crystalline 2D polyaniline film has remained a challenge due to the lack of rational synthesis methods. The project aims to develop a surfactant-monolayer-assisted on-water synthesis method towards highly crystalline supramolecular polyaniline thin-films and 2D covalent polyanilines (2DCPs) with large-sized crystalline domains (from at least 100 nm to 1 micro meter in size) and controlled thickness (from monolayer to few-layer (<10 L)). By employing designed monomers, we will accomplish optical and energy gap engineering, and conjugation channel densities. Importantly, we will disclose the crystalline structures of 2D polyanilines (e.g. molecular structure, single-crystalline grain size, grain edge/boundary structures) via transmission electron microscopy (TEM) characterization techniques and achieve fundamental understanding on the synthetic mechanism. Furthermore, we will investigate the conductivity properties and establish a reliable structure-electronic property relationship of resulting 2D polyanilines. As the key achievements, we expect to establish a general but reliable synthesis route and develop novel conducting 2D polyanilines for organic electronics.

由于独特的2D特征以及便捷的设备集成，高电荷传输和高性能稳定性，将线性聚合物传导聚合物转化为二维（2D）结构引起了人们对电子设备的关注。但是，由于缺乏理性合成方法，晶体2D聚苯胺膜的实现仍然是一个挑战。该项目旨在开发一种表面活性剂 - 单层辅助的水合成方法，用于高度结晶的超分子聚苯胺薄膜和2D共价聚苯胺（2DCP），具有大尺寸的结晶域（从至少100 nm到1微米，尺寸为100 nm至1微米），尺寸为100 nm至1微米（从厚度）（<100 loylays）（<10 loylaylays）（<10 l）。通过使用设计的单体，我们将完成光学和能量差距工程以及共轭通道密度。重要的是，我们将通过透射电子显微镜（TEM）表征技术（例如分子结构，单晶晶粒尺寸，晶粒边缘/边界结构）披露2D聚苯胺（例如分子结构，单晶晶粒尺寸，晶粒边缘/边界结构）的结构结构，并对合成机制实现基本理解。此外，我们将研究电导率的性能，并建立可靠的结构 - 电子性质的关系。作为关键成就，我们期望建立一般但可靠的合成途径，并为有机电子产品开发新颖的导电2D聚苯胺。