کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5009608 | 1462051 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Naked-eye detection of copper(II) ions by a “clickable” fluorescent sensor
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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 “clickable” sensing platform for signal-on fluorescent detection of Cu2+ has been developed based on the high regioselectivity of Cu(I)-catalyzed azide-alkyne click reaction (CuAAC) and the aggregated AIE-active molecules (BATPE) as the signal reporters. The CuAAC reaction causes a structural change of BATPE from molecularly dispersed to aggregate state in the presence of trace Cu2+, thus inducing a dramatic fluorescence “turn-on” response which can be judged with the naked eye. Under the optimum conditions, down to 0.2 μM and 0.5 μM Cu2+ were successfully detected by fluorescence spectrophotometer and naked eye, respectively. This method is simple and low-cost without the need for expensive equipment. Thanks to the superior specificity of CuAAC reaction, our assay is capable of sensing Cu2+ in the existence of other environmentally relevant metal ions in real samples, indicating that it may serve as a promising sensor for on-site Cu2+ analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 240, March 2017, Pages 560-565
Journal: Sensors and Actuators B: Chemical - Volume 240, March 2017, Pages 560-565
نویسندگان
Bo Situ, Jiamin Zhao, Weifeng Lv, Jumei Liu, Hongkun Li, Bo Li, Zhixin Chai, Nannan Cao, Lei Zheng,