کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7147294 | 1462098 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A reversible switch as highly selective sequential chemosensor for Al3+ cation followed by Fâ anion
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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
A novel optical Rhodamine-Furan type chemosensor (RF) was easily synthesized and characterized as a revisable switch. It dispalyed high selectivity toward Al3+ among 19 metal ions and the resultant complex [RF-Al3+] as a sequential chemosensor toward Fâ among 16 anions in neutral aqueous media. Moreover, detecting fluoride at concentration below the maximum contaminant level in drinking water defined by the USEPA (4.0 mg Lâ1, 211 μM) could be achieved with a detection limit (LOD) estimated down to 1.6 μM. The reversible ring-open mechanism (OFF-ON-OFF) and the 1:1 stoichiometric structure between RF and Al3+ were adequately supported by job plot evaluation, optical titration, and 1H NMR study. Finally, it could be conveniently used for “real-world applications” such as the determination of ï¬uorides in toothpastes with “naked eye” due to the obvious color change.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 164-172
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 164-172
نویسندگان
Yongsheng Mi, Zhong Cao, Yating Chen, Shu Long, Qiufen Xie, Dongming Liang, Zhu Wenping, Jiannan Xiang,