کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5463296 | 1517194 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel fluorescence enhancement probe based on L-Cystine modified copper nanoclusters for the detection of 2,4,6-trinitrotoluene
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The rapid development of fluorescent nanomaterials has broadened a new horizon for the design of easy-to-use and sensitive sensors. Herein, the stable, water-soluble and fluorescent L-Cystine modified copper nanoclusters (CuNCs) were prepared via size-focusing etching method. The maximum emission wavelength of the obtained CuNCs was 500 nm with an excitation wavelength of 396 nm. The as-prepared CuNCs can only emit faint light when dispersed in aqueous solution, but generate obvious fluorescence intensity enhancement after adding specific amount of 2,4,6-trinitrotoluene (TNT). Under the optimal conditions, the CuNCs were adopted as an effective fluorescence probe for the detection of trace TNT through fluorescence “turn-on” mode for the first time. The calibration curve of TNT was linear up to 4.8 μM, with a detection limit of 9.1 nM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 194, 1 May 2017, Pages 5-8
Journal: Materials Letters - Volume 194, 1 May 2017, Pages 5-8
نویسندگان
Shenghong Yang, Xiaohan Sun, Yu Chen,