Dye Conjugates with a Low Band Gap

该研究项目的总体目标是通过发色团结构单元的共价连接在大分子中产生新的光学性质。这些大分子的性质不是单体性质的总和，而是由单个单体的相互作用产生的。这些性质可以是静态的，例如共轭聚合物中的低带隙，但也可以是动态的，例如高激子扩散速率。在此资助申请中，我们将专注于基于前述资助期的新方面。我们打算通过方酸均聚物的合成改性来产生特定拉伸的锯齿形或螺旋结构，并基于这些方酸染料合成星形低聚物。为了生产共聚物，我们将方酸菁与其他荧光染料如BODIPY共聚。所有这些大分子结构应主要在溶液中通过超快光谱进行研究，以详细了解单体结构单元之间的相互作用，并使其可用于集成在光电器件中。

The general goal of this research project is the generation of new optical properties in macromolecules by covalent connection of chromophore building blocks. The properties of these macromolecules are not the sum of those of the monomers but will be generated by the interaction of individual monomers. These properties can be static such as a low band gap in conjugated polymers but can also be dynamic such as a high exciton diffusion rate.In this funding application we will focus on new aspects based on the forgoing funding period. We intend to generate specifically stretched zig-zag or helix structures by synthetic modification of squaraine homopolymers and to synthesise star-like oligomers based on these squaraine dyes. In order to produce copolymers we will copolymerise squaraines with other fluorescent dyes such as BODIPYs. All these macromolecular structures shall predominantly be investigated in solution by ultrafast spectroscopy in order to understand the interactions between the monomeric building blocks in detail and to make them available for integration in optoelectronic devices.