Abstract
A multi-functional chemosensor
1
as silver and sulfide detector was synthesized by the combination of octopamine and 4-dimethylaminocinnamaldehyde. Sensor
1
exhibited a ratiometric fluorescence emission for Ag
+
from blue to sky. The binding mode of
1
and Ag
+
turned out to be a 1 : 1 ratio as determined using Job plot and electrospray ionization (ESI) mass spectral analyses. The sensing mechanism of
1
with silver ion was unravelled by
1
H NMR titrations and theoretical calculations. Sensor
1
also discerned sulfide by enhancing fluorescence intensity and changing colour from yellow to colourless in aqueous solution. The sensing properties of
1
toward S
2−
were investigated by using ESI-mass analysis, Job plot and
1
H NMR titrations. Moreover,
1
could be used as a detector for sulfide in a wide pH range.
Funder
Korea Ministry of Environment
National Research Foundation of Korea
Cited by
23 articles.
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