Self-assembly of organic molecules within oxide nanostructures

氧化物纳米结构内有机分子的自组装

• 批准号: 410554859
• 负责人: Professorin Dr.-Ing. Manuela S. Killian
• 金额: --
• 依托单位: Surface and Interface Engineered Materials (SIEM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/410554859?language=en
• 关键词: Self; assembly; organic; molecules; within

In this project we will overcome current problems in loading and especially in the characterization of interlaced organic-inorganic nanostructures. We will produce homogeneous and heterogeneous distributions of organic self-assembled monolayers (SAMs) within oxide nanostructures and develop reliable characterization methods for the analysis of the depth distribution of the SAMs. The analysis of such organic-inorganic composite materials, in particular the depth distribution of multiple organic SAMs, is challenging. Many techniques cannot provide this information, as they either lack depth resolution, sensitivity or chemical information. With time-of-flight secondary ion mass spectrometry (ToF-SIMS) we are able to distinguish similar SAMs adsorbed to (even low-conductivity) surfaces. In this project, we will apply a combination of shallow focused ion beam (FIB) milling and ToF-SIMS imaging to obtain artefact free chemical maps of the depth distribution of organic molecules within metal oxide nanostructures.Our goal is to develop metal oxide nanostructures, such as vertically oriented nanopores and nanotubes, nanosponges or nanoparticle layers, which are coated with SAMs of functional organic molecules either homogeneously over the entire nanostructure depth or at selected positions. We aim at the development of complex, multifunctional architectures by selective modification of distinct depths of the structures. Nanostructures of the oxides of Zr, W and Sn will be in the focus of this project. The generation of porosity and length adjustable oxide layers on both metallic and transparent substrates are included in the proposed research.In addition to the modification with SAMs, we aim at the defect-free filling of oxide nanostructures with polymers. The filled structures will additionally be applied either in perovskite solar cells as hole transporting material (HTM, particularly tungsten oxide) and electron transporting layer (ETL, particularly tin oxide), or in drug release systems (zirconia). Furthermore, polymer filling of the nanostructures will be used for artefact-reduced conventional depth profiling and to protect the SAMs within the nanostructured oxides during analysis.

在这个项目中，我们将克服目前的问题，特别是在负载的表征交错的有机-无机纳米结构。我们将在氧化物纳米结构内产生均匀和非均匀分布的有机自组装单分子层（SAMs），并开发可靠的表征方法用于分析SAMs的深度分布。这种有机-无机复合材料的分析，特别是多个有机SAM的深度分布，是具有挑战性的。许多技术无法提供这一信息，因为它们要么缺乏深度分辨率、灵敏度，要么缺乏化学信息。利用飞行时间二次离子质谱（ToF-SIMS），我们能够区分吸附到（即使是低电导率）表面的类似SAM。在这个项目中，我们将应用浅聚焦离子束（FIB）铣削和ToF-SIMS成像的组合来获得金属氧化物纳米结构中有机分子深度分布的无伪影化学图。我们的目标是开发金属氧化物纳米结构，例如垂直取向的纳米孔和纳米管，纳米海绵或纳米颗粒层，其在整个纳米结构深度上均匀地或在选定的位置上涂覆有功能有机分子的SAM。我们的目标是通过选择性地修改结构的不同深度来开发复杂的多功能建筑。Zr、W和Sn的氧化物的纳米结构将是该项目的重点。在金属基底和透明基底上生成孔隙率和长度可调的氧化物层包括在拟议的研究中，除了用自组装膜修饰外，我们的目标是用聚合物无缺陷地填充氧化物纳米结构。填充结构还将应用于钙钛矿太阳能电池中作为空穴传输材料（HTM，特别是氧化钨）和电子传输层（ETL，特别是氧化锡），或应用于药物释放系统（氧化锆）。此外，纳米结构的聚合物填充将用于减少伪影的常规深度分析，并在分析期间保护纳米结构氧化物内的SAM。