Redox active organo silica based on phenothiazines

吩噻嗪类化合物的氧化还原特性可以很容易地调节，这使得它们成为开发新型功能电子材料的理想候选者。本课题的目的是在多孔材料上接枝具有反应基团的吩噻嗪类化合物的合成和光谱表征。为了实现这一点，我们将使用所谓的周期性结构介孔有机二氧化硅（PMO），它可以通过模板定向缩聚（RO）3Si-XSi(OR)3型硅氧烷来获得。X也可以是一个吩噻二烯。此外，还将研究阳离子吩噻嗪在阴离子官能化PMOs孔表面的静电系聚。将详细研究游离吩噻嗪和接枝过程产物的有机/无机杂化材料的光和电化学性质，以及它们与存在于孔中的电子受体的相互作用。

The redox properties phenothiazines can easily be modulated, which makes them ideal candidates for developing novel functional electronic materials. The aim of this project is the synthesis and spectroscopic Characterization of phenothiazines bearing reactive group for grafting them onto porous materials. To realize this, we will use so-called periodically structured mesoporous organo silica (PMO), which are accessible by the template directed condensation of silsesquioxanes of the type (RO)3Si-XSi(OR)3. Hereby X can be a phenothiazinylene, too. Additionally the electrostatic tethering of cationic phenothiazines onto the pore surfaces of anionically functionalized PMOs will be investigated. The photo- and electrochemical properties of the free phenothiazines and of the organic/inorganic hybridmaterials which will be the products of the grafting process will be investigated in detail as well as of their interaction with electron acceptors being present in the pores.