کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7682053 | 1495818 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A highly sensitive and selective turn-on fluorogenic and colorimetric sensor based on pyrene-functionalized magnetic nanoparticles for Hg2+ detection and cell imaging
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, a colorimetric and “turn-on” fluorescent sensor (Py-Si-Fe3O4@SiO2 NPs) for Hg2+ detection was designed with pyrene derivative covalently grafted onto the surface of magnetic core/shell Fe3O4@SiO2 nanoparticles using the silanol hydrolysis approach. The Py-Si-Fe3O4@SiO2 inorganic-organic hybrid material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray power diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and fluorescence emission. The results of fluorescence spectra showed that the resultant multifunctional nanoparticles exhibited selective turn-on type fluorescence enhancement with Hg2+. In addition, the presence of magnetic Fe3O4 nanoparticles in the sensor Py-Si-Fe3O4@SiO2 NPs would also facilitate the magnetic separation of Hg2+-Py-Si-Fe3O4@SiO2 from the solution. The as-prepared chemosensor was also successfully applied to detect Hg2+ in environmental water samples and serum sample. Results from confocal laser scanning microscopy experiments demonstrated that this chemosensor was cell permeable and can be used as a fluorescent probe for monitoring Hg2+ in living cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 117, 15 December 2013, Pages 338-344
Journal: Talanta - Volume 117, 15 December 2013, Pages 338-344
نویسندگان
Ling Chen, Baozhan Zheng, Yong Guo, Juan Du, Dan Xiao, Lin Bo,