Synthesis and Characterization of New Light Emitter Symmetrical Phenoxazinium Salt and Its Potential Application as Sensor for Assessment of Hg2+
Safaa.I.elewa;
Abstract
The sensitization of the excited triplet state of a
novel symmetrical Bis(dialkylamino)phenoxazinium salt
was developed in the presence of Hg2+. This effect was used
to determine the concentration of Hg2+ in different water
samples. The phenoxazinium salt sensor was characterized
by different spectroscopic tools such as: UV, FTIR, NMR
and fluorescence spectra. The sensor has an emission band
at 347 nm in DMSO. Hg2+ in DMSO at pH 5.6 can remark ably quench the fluorescence intensity of the sensor at 347 nm
and a new band was appeared at 436 nm due to the strong
complex formation between Hg2+ and sensor. The quenching
of the band intensity at 347 and the enhancement of the
intensity of the new band at 436 were used to determine
the Hg2+ in different waste water samples. The dynamic
range found for the determination of Hg2+ concentration is
8.7×10-10 – 1.4×10-6 mol L−1 with a detection limit of
5.8×10−10 mol L−1 and quantification detection limit of
1.8×10-9 mol L-1.
novel symmetrical Bis(dialkylamino)phenoxazinium salt
was developed in the presence of Hg2+. This effect was used
to determine the concentration of Hg2+ in different water
samples. The phenoxazinium salt sensor was characterized
by different spectroscopic tools such as: UV, FTIR, NMR
and fluorescence spectra. The sensor has an emission band
at 347 nm in DMSO. Hg2+ in DMSO at pH 5.6 can remark ably quench the fluorescence intensity of the sensor at 347 nm
and a new band was appeared at 436 nm due to the strong
complex formation between Hg2+ and sensor. The quenching
of the band intensity at 347 and the enhancement of the
intensity of the new band at 436 were used to determine
the Hg2+ in different waste water samples. The dynamic
range found for the determination of Hg2+ concentration is
8.7×10-10 – 1.4×10-6 mol L−1 with a detection limit of
5.8×10−10 mol L−1 and quantification detection limit of
1.8×10-9 mol L-1.
Other data
| Title | Synthesis and Characterization of New Light Emitter Symmetrical Phenoxazinium Salt and Its Potential Application as Sensor for Assessment of Hg2+ | Authors | Safaa.I.elewa | Keywords | Hg2+;Bis(dialkylamino)phenoxazinium salt;Sensor;Quenching;Fluorescence intensity | Issue Date | 5-Feb-2014 | Publisher | Springer Science+Business Media New York 2014 | Journal | J Fluoresc | Volume | 24 | Start page | 759 | End page | 765 | DOI | I 10.1007/s10895-014-1349-4 |
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