
Keywords: BMFC; 6-bromomethyl-2-(2-furanyl)-3-hydroxychromone; ESIPT; excited-state intramolecular proton transfer; FA; 2-(6-diethylaminobenzo[b]furan-2-yl)-3-hydroxychromone; FRET; Förster resonance energy transfer; GFP; green fluorescent protein; 3HC; 3-hydroxyc