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.

线性聚苯胺导电聚合物由于其独特的二维结构、易于集成、高电荷传输和高性能稳定性等优点，在电子器件领域引起了广泛的关注。然而，由于缺乏合理的合成方法，二维结晶聚苯胺薄膜的制备一直是一个挑战。该项目旨在开发一种表面活性剂单层辅助的水上合成方法，以获得具有大尺寸结晶域（尺寸至少为100 nm至1 μ m）和可控厚度（从单层到少层（<10 L））的高度结晶的超分子聚苯胺薄膜和2D共价聚苯胺（2DCP）。通过使用设计的单体，我们将完成光学和能隙工程，和共轭通道密度。重要的是，我们将通过透射电子显微镜（TEM）表征技术公开2D聚苯胺的晶体结构（例如分子结构，单晶晶粒尺寸，晶粒边缘/边界结构），并实现对合成机理的基本理解。此外，我们将调查的导电性能，并建立一个可靠的结构和电子性质的关系，所得的二维聚苯胺。作为本论文的主要成果，我们期望建立一条通用而可靠的合成路线，并开发新型的二维导电聚苯胺，用于有机电子学。