Highly Emissive Far Red/Near‐IR Fluorophores Based on Borylated Fluorene–Benzothiadiazole Donor–Acceptor Materials. Issue 35 (27th July 2016)

• Record Type: Journal Article
• Authors: Crossley, Daniel L.; Vitorica‐Yrezabal, Inigo; Humphries, Martin J.; Turner, Michael L.; Ingleson, Michael J.
• Is Part Of: Chemistry. Volume 22:Issue 35(2016)
• Page Start: 12439
• Page End: 12448
• Publication Date: 2016-07-27
• Subjects: boron -- chromophores -- cross-coupling -- donor–acceptor systems -- near-infrared fluorescence; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201602010
• Languages: English
• ISSNs: 0947-6539

Abstract

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. Abstract : The perfect couple : Cross‐coupling enables the high yielding synthesis of borylated donor–acceptor materials that contain electron‐rich aromatics 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 in the solid state.