Highly Emissive Far Red/Near‐IR Fluorophores Based on Borylated Fluorene–Benzothiadiazole Donor–Acceptor Materials |
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| Authors: | Daniel L Crossley Dr Inigo Vitorica‐Yrezabal Dr Martin J Humphries Prof Michael L Turner Dr Michael J Ingleson |
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| Institution: | 1. School of Chemistry, University of Manchester, Manchester, UK;2. Cambridge Display Technology Ltd. (Company Number 02672530) Unit 12, Godmanchester, UK |
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| Abstract: | Stille, Suzuki–Miyaura and Negishi cross‐coupling reactions of bromine‐functionalised borylated precursors enable the facile, high yielding, synthesis of borylated donor–acceptor materials that contain electron‐rich aromatic units and/or extended effective conjugation lengths. These materials have large Stokes shifts, low LUMO energies, small band‐gaps and significant fluorescence emission >700 nm in solution and when dispersed in a host polymer. |
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| Keywords: | boron chromophores cross-coupling donor– acceptor systems near-infrared fluorescence |
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