Cooperativity in thin films of spin crossover iron complexes

自旋交叉铁配合物薄膜中的协同作用

• 批准号: 25206931
• 负责人: Professor Dr. Volker Schünemann
• 金额: --
• 依托单位: Arbeitsgruppe Biophysik und Medizinische Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/25206931?language=en
• 关键词: Cooperativity; thin; films; spin; crossover

Thin films of spin crossover iron complexes supported on silicon single crystal surfaces shall be prepared by Langmuir-Blodgett and spin coating techniques. Film characterization will be performed by light-, atomic force as well as scanning electron microscopy and optical spectroscopy. Spin transition curves will be obtained by Mössbauer spectroscopy with synchrotron radiation in grazing incidence, a technique which recently has reached monolayer sensitivity. In cooperation with Dr. H. Paulsen (University of Lübeck) the experimental studies will be accompanied by density functional theory (DFT) calculations. The aim of this project is to prepare homogenous films of spin crossover iron complexes and to determine how the spin transition curve and therefore the degree of cooperativity of the transition behaves as a function of film thickness.

采用Langmuir-Blodgett和自旋涂层技术制备支撑在硅单晶表面的自旋交叉铁配合物薄膜。薄膜的表征将通过光、原子力以及扫描电子显微镜和光谱学来完成。自旋跃迁曲线将通过在掠入射下使用同步辐射的Mössbauer光谱获得，这种技术最近已达到单层灵敏度。与Dr. H. Paulsen （University of l<s:2> beck）合作进行的实验研究将伴随着密度泛函理论（DFT）的计算。本项目的目的是制备自旋交叉铁配合物的均匀薄膜，并确定自旋转变曲线以及过渡的协同度如何作为薄膜厚度的函数。