Topology Guided Design of Multi-Photon Absorption in CrystallineCoordination Networks

晶体配位网络化合物（CCNs）的自组装特性与网状合成的拓扑原理相结合，允许有机分子（连接物）在空间上的特定排列。材料的结晶性质产生了分子尺度上构建块之间的距离和角度的精确定义，即有机连接体之间。这方面对于理解和设计ccn的光物理性质特别重要。分子间的相互作用决定了生色团阵列的光学响应，自然光合系统中的光收集蛋白就是一个例子。在单个有机发色团连接体上定位的基本光物理性质以及这些连接体之间的协同效应有助于整个组装体的功能。该项目的目标是获得对多光子活性CCNs结构-性能关系的基本理解，并为这种高性能材料制定设计规则。前景包括通过双光子点激发增加光学数据存储设备（如CD， DVD）的数据存储密度。目标合成，复杂的材料表征以及尖端的多维光谱将被结合起来。

The self-assembling nature of crystalline coordination networkcompounds (CCNs) combined with the topological principles ofreticular synthesis allow for a specific arrangement of organicmolecules (linkers) in space. The crystalline nature of the materialsyields a precise definition of distances and angles between thebuilding blocks on the molecular scale, i.e. between the organiclinkers. This aspect is of particular importance for understanding anddesigning photo-physical properties of CCNs. Intermolecularinteractions define the optical response of chromophore arrays, asexemplified by the light harvesting proteins in natural photosyntheticsystem. The fundamental photo-physical properties localized onindividual organic chromophore linkers and the cooperative effectsbetween these linkers contribute to the functionality of the wholeassembly. The project´s objective is obtaining fundamentalunderstanding of structure-property relationships of multi-photonactive CCNs and developing design rules for such high performingmaterials. Perspectives include increasing data storage densities inoptical data storage devices (e.g. CD, DVD) by two-photon pointexcitation. Targeted synthesis, sophisticated materialscharacterization as well as cutting-edge multidimensionalspectroscopy will be combined.