title: Highly Emissive Far Red/Near-IR Fluorophores Based on Borylated Fluorene-Benzothiadiazole Donor-Acceptor Materials.
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.
authors.affiliation: School of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Crossley
authors.affiliation: School of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
authors.forename: Inigo
authors.initials: I
authors.lastname: Vitorica-Yrezabal
authors.affiliation: Cambridge Display Technology Ltd. (Company Number 02672530) Unit 12, Cardinal Park, Cardinal Way, Godmanchester, PE29 2XG, UK.
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Humphries
authors.affiliation: School of Chemistry, University of Manchester, Manchester, M13 9PL, UK. michael.turner@manchester.ac.uk.
authors.forename: Michael L
authors.initials: ML
authors.lastname: Turner
authors.affiliation: School of Chemistry, University of Manchester, Manchester, M13 9PL, UK. michael.ingleson@manchester.ac.uk.
authors.forename: Michael J
authors.identifier: http://orcid.org/0000-0001-9975-8302
authors.initials: MJ
authors.lastname: Ingleson
keywords: boron; chromophores; cross-coupling; donor-acceptor systems; near-infrared fluorescence