Phenylene-Based Molecular Spoked Wheels: Synthetic Access and Hybride Structures

我们将合成基于不同尺寸和功能的亚苯基主链的分子轮子。这些结构是单分散的，高度稳定，并且将在它们的六个角上含有侧基以保证它们的加工性。我们最近报道的纯苯基分子轮子的合成是否也可以转移到更大结构的合成上，这一点将得到澄清。根据合成结果，我们将制备第一个分子蜘蛛网，对其进行深入的表征，并研究其各自的超分子化学。此外，我们将研究对称性降低的轮子的合成和性质，这种轮子可以连接两个不同的侧基，每个侧基位于轮子的六个角中的三个角上。此外，还将用不同相对分子质量和不同极性的卷曲状柔性低聚物修饰中心刚性分子轮子，制备刚性轮子的杂化结构。我们将研究化学结构和链长对超分子纳米结构形成的影响，以及对轮子与经典均聚物的相容性的影响。

We will synthesize molecular spoked wheels based on a phenylene backbone with various sizes and functionalities. These structures are monodisperse, highly stable, and will contain side groups at their six corners to guarantee their processability. It will be clarified if our recently reported synthesis of the purely phenylene-based molecular spoked wheels can be also transferred to the synthesis of larger structures. Depending on the synthetic results, we will prepare the first molecular spider web, characterize it thoroughly and investigate its respective supramolecular chemistry. Moreover, we will investigate the synthesis and properties of spoked wheels with a reduced symmetry that allow the attachment of two different side groups, each at three of the six corners of the wheel. In addition, hybride structures of rigid spoked wheels will be prepared in which a central rigid molecular spoked wheel is decorated with coil-like flexible oligomers of different molecular weight and different polarity. We will investigate the influence of the chemical structure and of the chain length on the supramolecular nanostructure formation and on the miscibility of the wheels with classical homo polymers.