Synthesis and characterization of new light emitter symmetrical phenoxazinium salt and its potential application as sensor for assessment of Hg2+.
The sensitization of the excited triplet state of a novel symmetrical Bis(dialkylamino)phenoxazinium salt was developed in the presence of Hg(2+). This effect was used to determine the concentration of Hg(2+) 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. Hg(2+) in DMSO at pH 5.6 can remarkably 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 Hg(2+) 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 Hg(2+) in different waste water samples. The dynamic range found for the determination of Hg(2+) 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).
Analytical Chemistry Division, Faculty of Science, Ain Shams University, Cairo, Egypt, saidattiasam78@gmail.com.
M S
MS
Attia
A O
AO
Youssef
Abdel-Sattar S H
AS
Elgazwy
Samia A
SA
El Abady
Samia M
SM
Agami
Safaa I
SI
Elewa
D015374:Biosensing Techniques; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000032:analysis* / Q000737:chemistry*; D015394:Molecular Structure; D010078:Oxazines / Q000138:chemical synthesis*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000737:chemistry*
D005456:Fluorescent Dyes; D010078:Oxazines; D014867:Water; C039203:phenoxazine; D008628:Mercury