Spirobifluorene Metallaaromatics. Issue 59 (26th September 2019)

• Record Type: Journal Article
• Authors: Arias‐Coronado, Vanessa C.; Pereira‐Cameselle, Raquel; Ozcelik, Ani; Talavera, Maria; Peña‐Gallego, Ángeles; Alonso‐Gómez, J. Lorenzo; Bolaño, Sandra
• Is Part Of: Chemistry. Volume 25:Issue 59(2019)
• Page Start: 13496
• Page End: 13499
• Publication Date: 2019-09-26
• Subjects: aromatic systems -- iridium -- metallacycles -- spirobifluorenes; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201903213
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: 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. Abstract : The synthesis of the first metallaromatic spirobifluorene complex has been achieved. The study of its structure and properties revealed an aromatic character, high thermal stability, and a strongly redshifted absorption spectrum opening a new family of compounds for optoelectronic and chiroptical applications.