Chemistry of Free Boroles

硼杂环类化合物显示出令人兴奋的光学和电子性质，这源于它们的反芳族结构，包括具有三配位硼原子的不饱和五元杂环。虽然以前的研究表明，环取代基在硼杂环戊二烯的性质中起着至关重要的作用，但由于孤立衍生物的数量有限，它们的确切影响仍不清楚。因此，本项目旨在开发一种新的通用合成路线，以获得各种各样的borole架构，从而可以系统地研究它们的结构-功能关系。新的方法还提供了机会，制备共轭聚合物的功能borole部分内的主链，将进行研究，以阐明其物理化学特性。我们的工作的另一个重点是对阴离子自由基形式的硼，特别是这些自由基之间的相互作用，在定义明确的分子系统。这些系统的研究应证明硼作为高自旋材料的构建块的潜力，也有助于理解共轭有机硼烷聚合物中存在的电荷传输现象，这对功能材料变得越来越重要。

Boroles display exciting optical and electronic properties derived from their antiaromatic structure, comprising an unsaturated five-membered heterocycle with a three-coordinate boron atom. While previous research has shown that the ring substituents play a crucial role in the properties of the boroles, their exact influence remains unclear, owing to the limited number of isolated derivatives. Thus, this project aims at developing a new general synthetic route to access a wide variety of borole architectures, thereby allowing a systematic investigation of their structure-function relationship. The new approach also offers the opportunity to prepare conjugated polymers composed of functional borole moieties within the main chain that will be studied to elucidate their physicochemical characteristics. Another focus of our work is on the anion radical forms of the boroles and in particular the interaction between these radicals in well-defined molecular systems. These systematic studies should demonstrate the potential of boroles as building blocks for high-spin materials and also aid in understanding the charge transport phenomena present in conjugated organoborane polymers, which are becoming increasingly important for functional materials.