Reimagining <i>o</i> ‐Carborane‐Based Fluorophores: Charge‐Transfer from Boron Substituents Triggers Aggregation‐ and Crystallization‐Induced Emission
Abstract
Abstract o ‐Carborane‐based fluorophores are widely recognized for their aggregation‐induced and crystallization‐induced emission (AIE and CIE) properties, making them valuable building blocks for materials used in fluorescence applications such as bioimaging or optoelectronics. Until now, observing AIE/CIE required the fluorophore to be attached via the carbon atom of the carborane, inherently limiting further functionalization possibilities. Herein, we report for the first time that boron‐substituted carboranes (substituent is at position 9) exhibit AIE/CIE activity, which originates from photoexcitation‐induced electron‐transfer from the substituents linked to the carborane cage via its boron vertices. Furthermore, the solid state emission can be tailored by the proper selection of the substituents. This finding not only significantly broadens the scope of AIE‐active compounds but also offers new design strategies for the development of luminescent carborane‐based materials.
Article Details
Authors (10)
Balázs Szathmári
Department of Inorganic and Analytical Chemistry Faculty of Chemical Technology and Biotechnology Budapest University of Technology and Economics Műegyetem rkp. 3. Budapest H‐1111 Hungary
Yanhong Gao
Department of Inorganic and Analytical Chemistry Faculty of Chemical Technology and Biotechnology Budapest University of Technology and Economics Műegyetem rkp. 3. Budapest H‐1111 Hungary
Dániel Buzsáki
HUN‐REN Wigner Research Centre for Physics P.O. Box 49. Budapest H‐1525 Hungary
Dániel Zámbó
Institute of Technical Physics and Materials Science HUN‑REN Centre for Energy Research Konkoly‑Thege Miklós út 29‑33. Budapest H‐1121 Hungary
Tamás Holczbauer
Chemical Crystallography Research Laboratory and Stereochemistry Research Group Institute for Organic Chemistry, HUN‐REN Research Centre for Natural Sciences Magyar Tudósok körútja 2A. Budapest H‐1117 Hungary
Antal Udvardy
Department of Physical Chemistry University of Debrecen Egyetem tér 1. Debrecen H‐4032 Hungary
Pál Szabó
Júlia Kertész
Department of Inorganic and Analytical Chemistry Faculty of Chemical Technology and Biotechnology Budapest University of Technology and Economics Műegyetem rkp. 3. Budapest H‐1111 Hungary
Dóra Hessz
Department of Physical Chemistry and Materials Science and MTA‐BME Lendület Quantum Chemistry Research Group Faculty of Chemical Technology and Biotechnology Budapest University of Technology and Economics Műegyetem rkp. 3 Budapest H‐1111 Hungary
Zsolt Kelemen
Department of Inorganic and Analytical Chemistry Faculty of Chemical Technology and Biotechnology Budapest University of Technology and Economics Műegyetem rkp. 3. Budapest H‐1111 Hungary