Abstract:
A tripodal receptor R1 with a combination of nitrogen and oxygen-based binding sites was designed and
used for the selective determination of Cu2+. The fluorescence emission profile of R1 in the presence of
Cu2+ showed a marked enhancement in fluorescence intensity, indicating high selectivity among other
metal ions. The R1–Cu2+ complex was further explored as a sensor for anion detection. Upon addition
of Br , switching to a fluorescence ‘‘off” state was observed. The Br selectivity of the complex over a
wide range of concentrations was observed via titrimetric analysis through changes in the emission
spectra.
