A rhodamine/coumarin-based ratiometric fluorescent Fe(3+) sensor has been designed and synthesized. The sensor exhibits a good response to Fe(3+) ions with high sensitivity, selectivity and a large shift in the emission spectra (>100 nm), which shows Fe(3+) -induced FRET OFF-ON and PET ON-OFF behavior.
Keywords: FRET; Fe3+; rhodamine/coumarin; sensor.
Copyright © 2015 John Wiley & Sons, Ltd.