Cooperativity in thin films of spin crossover iron complexes

将通过Langmuir-Blodgett和旋涂技术制备支撑在硅单晶表面上的自旋交叉铁络合物的薄膜。薄膜表征将通过光，原子力以及扫描电子显微镜和光学光谱进行。自旋跃迁曲线将获得穆斯堡尔光谱与同步辐射掠入射，一种技术，最近已达到单层灵敏度。与H博士合作。Paulsen（吕贝克大学）的实验研究将伴随着密度泛函理论（DFT）计算。该项目的目的是制备自旋交叉铁络合物的均匀膜，并确定自旋转变曲线以及转变的协同性程度如何作为膜厚度的函数。

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.