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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhang, Kun Da-shun, Zhai Dong-sheng, Zou Hai-yan, Sun |
| Description | Author Affiliation: Dong-sheng Z ( College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China. Electronic address: zou_ds01@163.com.) |
| Abstract | In the present work, we designed and synthesized a rhodamine derived 'off-on' probe for Hg(II) detection, which might be potentially used in eco-industrial park. By grafting this probe onto the surface of an up-conversion NaYF4:Yb(3+)/Er(3+) excitation source, a Hg(II) sensing system was resulted. The nanocomposite was carefully characterized and analyzed by electron microscopy images, XRD analysis, IR spectra, thermogravimetry, UV-Vis absorption and fluorescence emission. Experimental data confirmed the structure of the nanocomposite. There was an efficient energy transfer between the excitation source and the probe, which made the nanocomposite a promising sensing system. The spectral response towards Hg(II) suggested that the fluorescence intensity of the nanocomposite increased with the increasing Hg(II) concentration, showing 'off-on' effect. What's more, the fluorescence signal of the nanocomposite was insensitive towards other metal ions, showing unique selectivity towards Hg(II). |
| ISSN | 13861425 |
| Volume Number | 118 |
| e-ISSN | 18733557 |
| Journal | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-01-24 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Fluorescent Dyes Chemistry Mercury Analysis Nanocomposites Rhodamines Erbium Fluorescence Fluorides Ultrastructure Ytterbium Yttrium Journal Article Discipline Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation |
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