Synthesis of Fluorescent Gold Nanoclusters Directed by Bovine Serum Albumin and Application for Nitrite Detection

被引：0
|
作者：
Qiaoli Yue
Lijun Sun
Tongfei Shen
Xiaohong Gu
Shuqiu Zhang
Jifeng Liu
机构：
[1] Liaocheng University,Department of Chemistry
[2] Shandong Provincial Key Lab of Test Technology on Food Quality and Safety,undefined
[3] Shandong Academy of Agricultural Sciences,undefined
来源：
Journal of Fluorescence | 2013年 / 23卷
关键词：
Nitrite; Gold nanocluster; Bovine serum albumin; Water samples;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In the present work, gold nanocluster (GNC) induced by bovine serum albumin (BSA) was synthesized as a novel fluorescence probe to detect nitrite (NO2−) sensitively and selectively. The fluorescence of GNC was found to be quenched effectively by NO2−. Under the optimum conditions, it was found that the change of fluorescence intensity was proportional with the concentration of NO2− in the linear range of 0.1–50 μM (R = 0.9990), with a detection limit (S/N = 3) of 30 nM. The absorption spectroscopy, circular dichroism (CD), and X-ray photoelectron spectroscopy (XPS) studies were employed to discuss the quenching mechanism. In addition, the present approach was successfully applied in real water samples.
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页码：1313 / 1318
页数：5
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