کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5009798 | 1462045 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new selective chemosensor based on phenanthro[9,10-d] imidazole-coumarin with sequential “on-off-on” fluorescence response to Fe3+ and phosphate anions and its application in live cell
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A phenanthro[9,10-d]imidazole-coumarin fluorescence sensor, N-(3-(1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)-2-((4-methyl-2-oxo-2H-chromen-7-yl)oxy)acetamide (PICA), has been synthesized and successfully achieved for the efficient detection for Fe3+ as a turn-off chemosensor in DMF/HEPES aqueous buffer (1:1, v/v, 10 mM, pH = 7.4). The detection of limit (LOD) for Fe3+ on fluorescence response of the sensor can be as low as 4.8 μM, which was successfully applied for the determination of the Fe3+ concentration in the real sample waters. The quenched 1:1 PICA-Fe3+ complex was found to subsequently act as a selective turn-on fluorescence sensor for phosphate anions against common anions and cations in the same condition with a displacement approach. The proposed mechanism of the “on-off-on” fluorescence response was further verified by 1H NMR and ESI-MS. Moreover, an imaging application of PICA for Fe3+ and phosphate anions in live cells was developed by fluorescence microscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 246, July 2017, Pages 370-379
Journal: Sensors and Actuators B: Chemical - Volume 246, July 2017, Pages 370-379
نویسندگان
Bing Zhao, Ting Liu, Yue Fang, Liyan Wang, Wei Kan, Qigang Deng, Bo Song,