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An Efficient Fluorescent Probe for Ratiometric pH Measurements in Aqueous Solutions
Author(s) -
Charier Sandrine,
Ruel Odile,
Baudin JeanBernard,
Alcor Damien,
Allemand JeanFrançois,
Meglio Adrien,
Jullien Ludovic
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200460557
Subject(s) - fluorescence , aqueous solution , oxazole , chemistry , derivative (finance) , photochemistry , litmus , range (aeronautics) , excitation , analytical chemistry (journal) , materials science , chromatography , optics , organic chemistry , physics , quantum mechanics , financial economics , economics , composite material
Just as litmus paper changes from red to blue with an increase in pH, so the fluorescence emission of the oxazole derivative 1 shifts from green to blue. Ratiometric measurements of the fluorescence emissions of the two species, after one‐ or two‐photon excitation, allow 1 to be employed as a pH sensor over the mid‐pH range.