Integration of different conductive coordination network compounds in multi-electrode device structures

多电极器件结构中不同导电配位网络化合物的集成

• 批准号: 316798080
• 负责人: Professor Dr. Gunther Wittstock
• 金额: --
• 依托单位: Institut für Chemie (IfC)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/316798080?language=en
• 关键词: Integration; different; conductive; coordination; network

This project will focus on the integration of different redoxaktive and conductive coordination network compounds (CCNCs) as thin films on multi-electrode devices as active materials for electronic and electrochemical devices. In the first funding period we developed the preparation of crystalline films on the basis of metal hexacyanometallate on different Substrates. In this project we would like to combine the approaches in order to deposit CCNCs with different redox potentials on top of each other. Electrochemical methods and X-ray photoelectron spectroscopy will be used for the characterization of the interface or interphase between such materials. They will provide the elemental distribution, the distribution of valence states as well as the redox potentials of the components in the multi-compound layers. The interphase will also be investigated by transmission electron microscopy (TEM) in a liquid cell, in order to gain insight into the extent and structure of those layers and to understand their role in electrochemically triggered valance changes.Depending on the redox state of the layers, they can or cannot accept/donate charge carriers from the neighboring CCNC phase. Dies will enable to tune the conductivity across such interfaces/interphases by changing the redox state of the CCNCs by voltammetric methods via the contact electrodes on the substrate or by oxidizers or reductants in the liquid phase. This shall be tested by interdigitated electrode arrays.While the change of the redox state of a CCNC by a microbandelectrode is unlikely to be permanent because charge carrier mobility will tend to dissipate those structures, more permanent structures will be created by exchange of transition metal ions and ligands at the surface of such thin films. This will open new possibilities for structural and functional modification of such functional layers, for instance to integrate sensory and photonic functionalities into such multi-component CCNC.

该项目将重点关注将不同的氧化还原和导电配位网络化合物（CCNC）集成为多电极装置上的薄膜，作为电子和电化学装置的活性材料。在第一个资助期间，我们开发了在不同基底上基于金属六氰基金属盐的晶体薄膜的制备方法。在这个项目中，我们希望结合这些方法，以便将具有不同氧化还原电位的 CCNC 沉积在彼此之上。电化学方法和X射线光电子能谱将用于表征此类材料之间的界面或界面。它们将提供元素分布、价态分布以及多化合物层中组分的氧化还原电位。还将通过液体电池中的透射电子显微镜 (TEM) 研究界面，以便深入了解这些层的范围和结构，并了解它们在电化学触发的价态变化中的作用。根据层的氧化还原状态，它们可以或不能接受/捐赠来自相邻 CCNC 相的电荷载流子。通过伏安法通过基板上的接触电极或通过液相中的氧化剂或还原剂改变 CCNC 的氧化还原状态，模具将能够调节跨界面/相间的电导率。这应通过叉指电极阵列进行测试。虽然微带电极对 CCNC 氧化还原态的改变不太可能是永久性的，因为载流子迁移率往往会消散这些结构，但通过在此类薄膜表面交换过渡金属离子和配体，将产生更持久的结构。这将为此类功能层的结构和功能修改开辟新的可能性，例如将传感和光子功能集成到此类多组件 CCNC 中。