Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany.
DWI - Leibniz-Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.
Small. 2021 Jun;17(25):e2101411. doi: 10.1002/smll.202101411. Epub 2021 May 21.
Future applications of conjugated polymer particles (CPP) in medicine, organic photonics, and optoelectronics greatly depend on high performance and precisely adjustable optical properties of the particles. To meet these criteria, current particle systems often combine conjugated polymers with inorganic particles in core-shell geometries, extending the possible optical characteristics of CPP. However, current conjugated polymer particles are restricted to a single polymer phase composed of a distinct polymer or a polymer blend. Here, a synthetic toolbox is presented that enables the synthesis of monodisperse core-shell and core-shell-shell particles, which consist entirely of conjugated polymers but of different types in the core and the shells. Seeded and fed-batch dispersion polymerizations based on Suzuki-Miyaura-type cross-coupling are investigated. The different approaches allow accurate control over the created interface between the conjugated polymer phases and thus also over the energy transfer phenomena between them. This approach opens up completely new synthetic freedom for fine tuning of the optical properties of CPP, enabling, for example, the synthesis of individual white light-emitting particles.
未来共轭聚合物粒子 (CPP) 在医学、有机光子学和光电领域的应用，在很大程度上取决于粒子的高性能和精确可调的光学性质。为了满足这些标准，目前的粒子系统通常将共轭聚合物与核壳结构中的无机粒子结合，从而扩展 CPP 的可能光学特性。然而，目前的共轭聚合物粒子仅限于由单一聚合物相组成的单一聚合物相，该聚合物相由单一聚合物或聚合物共混物组成。本文介绍了一种合成工具箱，该工具箱可用于合成单分散核壳和核壳壳粒子，这些粒子完全由共轭聚合物组成，但在核和壳中为不同类型。研究了基于 Suzuki-Miyaura 型交叉偶联的种子和补料分批分散聚合。不同的方法可以精确控制共轭聚合物相之间的界面，从而控制它们之间的能量转移现象。这种方法为 CPP 的光学性质的精细调谐开辟了全新的合成自由度，例如，能够合成单个白光发射粒子。
