Near‐IR BODIPY Dyes à la Carte—Programmed Orthogonal Functionalization of Rationally Designed Building Blocks |
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Authors: | Dr. Cesar F. A. Gómez‐Durán Ixone Esnal Dr. Ismael Valois‐Escamilla Arlette Urías‐Benavides Dr. Jorge Bañuelos Prof. Iñigo López Arbeloa Dr. Inmaculada García‐Moreno Prof. Eduardo Peña‐Cabrera |
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Affiliation: | 1. Departamento de Química, Universidad de Guanajuato, Guanajuato, GTO, Mexico), Fax;2. Departamento de Química Física, Universidad del País Vasco/EHU, Bilbao, Spain), Fax;3. +34)94‐601‐35‐00‐34;4. Instituto de Química-Física “Rocasolano”, CSIC, Madrid, Spain;5. +52)473‐7320006 ext. 8106 |
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Abstract: | Herein, we report the synthesis of polyfunctional BODIPY building blocks suitable to be subjected to several reaction sequences with complete chemoselectivity, thereby allowing the preparation of complex BODIPY derivatives in a versatile and programmable manner. The reactions included the Liebeskind–Srogl cross‐coupling reaction (LSCC), nucleophilic aromatic substitution (SNAr), Suzuki, Sonogashira, and Stille couplings, and a desulfitative reduction of the MeS group. This novel synthetic protocol is a powerful route to design a library of compounds with tailored photophysical properties for advanced applications. In this context, it is noteworthy that it offers a straightforward and cost‐effective strategy to shift the BODIPY emission deep into the near‐infrared spectral region while retaining high fluorescence quantum yields as well as highly efficient and stable laser action. These new dyes outperform the lasing behaviour of dyes considered as benchmarks over the red spectral region, overcoming the important drawbacks associated with these commercial laser dyes, namely low absorption at the standard pump wavelengths (355 and 532 nm) and/or poor photostability. |
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Keywords: | chemoselectivity cross-coupling dyes/pigments lasing properties orthogonal reactivity |
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