کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7147898 | 1462098 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Recognition of Cu2+ and Hg2+ in physiological conditions by a new rhodamine based dual channel fluorescent probe
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A new rhodamine-based fluorescent probe RFP3 was synthesized for selective recognition Hg2+ and Cu2+ in EtOH-HEPES buffer solution (20.0Â mM HEPES, 30:70, v/v, pH 7.0). This reagent could be used as a dual probe and allowed detection of Cu2+ and Hg2+ by monitoring changes in absorption and the fluorescence spectral pattern. UV-vis spectroscopy indicates that RFP3 is a good chromogenic chemosensor for Cu2+. Whereas the other ions, such as Na+, K+, Mg2+, Fe3+, Ca2+, Zn2+, Pb2+, Hg2+, Cd2+, Ba2+, Ni2+, Mn2+ and Ag+ failed to generate a palpable response. However, the color solution of RFP3 caused by the binding of Cu2+ has no fluorescence, which may be ascribed to the quenching of the fluorescence by Cu2+. Fluorescence spectral data reveals that RFP3 is an excellent fluorescent chemosensor for Hg2+ and other metal ions show no obvious interference for Hg2+ detection. Finally, RFP3 was successfully applied to the imaging of Hg2+ in living HL-7702 cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 512-521
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 512-521
نویسندگان
Meng Wang, Fanyong Yan, Yu Zou, Li Chen, Ning Yang, Xuguang Zhou,