Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310, Vigo, Spain.
Departamento de Química Orgánica, Universidad de Vigo, Campus Universitario, 36310, Vigo, Spain.
Chemistry. 2019 Oct 22;25(59):13496-13499. doi: 10.1002/chem.201903213. Epub 2019 Sep 26.
Spirobifluorene derivatives find use in many end-user applications. Therefore, further expansion of their scope is the focus of many research studies. However, although the optical properties of spirobifluorenes can be greatly tuned through incorporation of metal complexes, to date, spirobifluorene metallaaromatics remain unknown. Taking advantage of the versatility of our methodology for the synthesis of metallaaromatic systems, this work reports the first metallaaromatic spirobifluorene compound. The presence of an Ir atom was found to redshift the absorption maximum by ca. 1.1 eV compared to bare spirobifluorene. Additionally, X-ray analysis as well as anisotropy of the current-induced density calculations revealed this compound to be of aromatic nature. The high stability in solution, solid state, under air, and at high temperature, as well as distinct optical properties of this new class of compounds are expected to open new frontiers for chiroptical and optoelectronic applications.
螺二芴衍生物在许多终端用户应用中都有使用。因此，进一步扩展其应用范围是许多研究的重点。然而，尽管通过金属配合物的掺入可以极大地调节螺二芴的光学性质，但迄今为止，螺二芴金属芳烃仍然未知。利用我们合成金属芳烃体系的方法的多功能性，本工作报道了第一个金属芳烃螺二芴化合物。与裸露的螺二芴相比，Ir 原子的存在使吸收最大值红移约 1.1eV。此外，X 射线分析以及电流密度计算的各向异性表明该化合物具有芳香性。该化合物在溶液、固态、空气中以及高温下具有高稳定性，以及其独特的光学性质，预计将为手性光学和光电应用开辟新的领域。
