title: Synthesis of novel fluorinated coumarins: excellent UV-light excitable fluorescent dyes.
abstract: Two new fluorinated fluorescent dyes, 6,8-difluoro-7-hydroxy-4-methylcoumarin (Marina Blue) and 3-carboxy-6,8-difluoro-7-hydroxycoumarin (Pacific Blue), exhibit excellent photophysical properties among a series of novel fluorinated 7-hydroxycoumarins. Most of these fluorinated coumarins have quantum yields (0.63 to 0.89) equal to or higher than that of the parent compound (0.63), which, in combination with their lower pKaS and higher photostability, make them superior fluorescent dyes for use as reporter molecules in biological systems.
authors.affiliation: Molecular Probes, Inc., Eugene, Oregon 97402-9165, USA. wsun@epixmed.com
authors.forename: W C
authors.initials: WC
authors.lastname: Sun
authors.forename: K R
authors.initials: KR
authors.lastname: Gee
authors.forename: R P
authors.initials: RP
authors.lastname: Haugland
mesh_terms: D003374:Coumarins / Q000138:chemical synthesis*; D005456:Fluorescent Dyes / Q000138:chemical synthesis*; D005461:Fluorine; D013329:Structure-Activity Relationship; D014466:Ultraviolet Rays
chemical_list: D003374:Coumarins; D005456:Fluorescent Dyes; D005461:Fluorine