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Hosseini, M., Memari, Z, Ganjali, M.R., Khoobi, M., Faridbod, F., Shafiee, A., Norouzi, P., Shamsipur, M., Hajinezhad, A.. (1393). A Novel Mercury-Sensitive Fluorescent Nano-chemosensor using new Functionalized Magnetic core-shell Fe3O4@SiO2 Nanoparticles. , 8(4), 861-870. doi: 10.22059/ijer.2014.779
M. Hosseini; Z Memari; M.R. Ganjali; M. Khoobi; F. Faridbod; A. Shafiee; P. Norouzi; M. Shamsipur; A. Hajinezhad. "A Novel Mercury-Sensitive Fluorescent Nano-chemosensor using new Functionalized Magnetic core-shell Fe3O4@SiO2 Nanoparticles". , 8, 4, 1393, 861-870. doi: 10.22059/ijer.2014.779
Hosseini, M., Memari, Z, Ganjali, M.R., Khoobi, M., Faridbod, F., Shafiee, A., Norouzi, P., Shamsipur, M., Hajinezhad, A.. (1393). 'A Novel Mercury-Sensitive Fluorescent Nano-chemosensor using new Functionalized Magnetic core-shell Fe3O4@SiO2 Nanoparticles', , 8(4), pp. 861-870. doi: 10.22059/ijer.2014.779
Hosseini, M., Memari, Z, Ganjali, M.R., Khoobi, M., Faridbod, F., Shafiee, A., Norouzi, P., Shamsipur, M., Hajinezhad, A.. A Novel Mercury-Sensitive Fluorescent Nano-chemosensor using new Functionalized Magnetic core-shell Fe3O4@SiO2 Nanoparticles. , 1393; 8(4): 861-870. doi: 10.22059/ijer.2014.779

A Novel Mercury-Sensitive Fluorescent Nano-chemosensor using new Functionalized Magnetic core-shell Fe3O4@SiO2 Nanoparticles

International Journal of Environmental Research
مقاله 1، دوره 8، شماره 4، دی 2014، صفحه 861-870    اصل مقاله (740.43 K)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.22059/ijer.2014.779
نویسندگان
M. Hosseini1؛ Z Memari2؛ M.R. Ganjali* 2؛ M. Khoobi3؛ F. Faridbod2؛ A. Shafiee3؛ P. Norouzi2؛ M. Shamsipur4؛ A. Hajinezhad5
1Department of life science engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran
2Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
3Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran 14176, Iran
4Department of Chemistry, Razi University, Kermanshah, Iran
5Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran
چکیده
In this work, a novel Hg2+ sensitive fluorescent chemosensor is constructed. The proposed
nano-chemosensor was prepared through the preparation of 3-(benzo[d]thiazol-2-yl)-7-hydroxy-2H-chromen-
2-one functionalized silica nanoparticles which has high magnetization properties (BTC-Fe3O4@SiO2). The
ûnal product was characterized by Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric
analysis (TGA), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and UVvisible
absorption and ûuorescence emission. The material was found to demonstrate selective interactions
with Hg2+ ions. This interaction is most probably due to the presence of the ûuorophore moiety at the surface
of nanomaterial. Fluorescence measurements revealed that the emission intensity of the Hg2+-bound with the
magnetic core-shell Fe3O4@SiO2 NPs increases signiûcantly upon addition of various concentrations of Hg2+,
while in case of other mono, di, trivalent cations no changes or weak changes in the intensities were observed.
The enhancement of ûuorescence is attributed to the strong covalent binding of Hg2+ ions with the binding
constant value of 1.7×105/M. The sensor can be applied for analysis of mercury in environmental sample.
کلیدواژه‌ها
Mercury ion؛ Fluorescent probe؛ Nano-chemosensor؛ Functionalized magnetic core-shell Fe3O4@SiO2 nanoparticles
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