Discovery of a size-record breaking green-emissive fluorophore: small, smaller, HINA
Rui Kang, Laura Talamini, Elisa D’Este, Bianca Martins Estevão, Luisa De Cola, Wim Klopper, Frank Biedermann
Abstract
Astonishingly, 3-hydroxyisonicotinealdehyde (HINA) is despite its small size a green-emitting push–pull fluorophore in water (QY of 15%) and shows ratiometric emission response to biological relevant pH differences (p K a2 ∼ 7.1).
Topics & Concepts
FluorophoreChemistryPhotochemistryMaterials scienceFluorescenceOpticsPhysicsMolecular Sensors and Ion DetectionLuminescence and Fluorescent MaterialsLanthanide and Transition Metal Complexes