Conductive polymer brushes: New electro- and photo- active molecular architectures

该项目旨在开发制造稳定的导电聚合物层的新技术，其中链通过一个(末端)点系在基材或颗粒上(导电聚合物刷子，CPB)。分子将在局部固定和稳定，而它们的构象、动力学和其他重要性质(光学、电子)将类似于母体非固定化CP的性质。我们首先将重点介绍不同类型的多氯联苯的合成，包括多组分电刷。为此，我们将使CPS的不同路线适用于多氯联苯的合成。多氯联苯将生长在不同化学成分和几何形状的表面(包括纳米颗粒)。我们将研究和优化CPBS的自组装、光学、电学、氧化还原和润湿性等基本性质。此外，我们还将研究如何在外界刺激(如环境、温度、电场等)下切换这些特性。探索在有机太阳能电池(OSCs)中利用多氯联苯作为有源层的可能性。将探索有机半导体有源层的以下结构：(A)电子给体材料的CP刷子，例如聚烷基噻吩类(或低带隙导电共聚物)生长在电极上，然后与电子受体饱和(膨胀)，如富勒烯衍生物；(B)CPB生长在惰性纳米粒子(毛状纳米粒子)上，然后与电子受体材料混合。我们希望获得性能得到极大改善的新型导电聚合物薄膜，可以用于光伏或传感器应用。

The project aims at the development of new techniques to manufacture stable conductive polymer layers, where chains are tethered to the substrate or particle by one (end)point (conductive polymer brushes, CPBs). The molecules will be locally fixed and stabilized, while their conformation, dynamics and other important properties (optical, electronic) will resemble the properties of the parent non-immobilized CPs. We first will focus an synthesis of CPBs of different types, including multicomponent brushes. For this we will adapt different routes known for CPs to the synthesis of CPBs. CPBs will be grown onto surfaces of different chemical composition and geometry (including nanoscopic particles). We will study and optimize fundamental properties of CPBs, such as self-assembly, optical, electrical, redox properties and wetability. Moreover, we will investigate how to switch those properties under external stimuli (such as environment, temperature, electric field, etc.) and explore the possibility to utilize CPBs as active layers in organic solar cells (OSCs). The following architectures of the active layers of OSCs will be explored: (a) CP brushes of electron-donor materials, such as polyalkylthiophenes (or low band gap conductive copolymers) grown on an electrode and then saturated (swollen) with electron-acceptors, such as fullerene derivatives; (b) CPBs grown on inert nanoparticles ( hairy nanoparticles ) and then blended with an electron acceptor material. We expect to obtain interesting new thin conducting polymer films with largely improved properties, which can be used for photo-voltaic or sensor applications.