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题名: A reversible fluorescent pH-sensing system based on the one-pot synthesis of natural silk fibroin-capped copper nanoclusters
作者: Zhang, Guomei1; Xu, Ting1; Du, Huizhi1; Qiao, Yunyun1; Guo, Xiaohong1; Shi, Lihong1; Zhang, Yan1; Shuang, Shaomin1; Dong, Chuan1; Ma, Huimin2
刊名: JOURNAL OF MATERIALS CHEMISTRY C
发表日期: 2016
卷: 4, 期:16, 页:3540-3545
收录类别: SCI
英文摘要: A one-pot "green'' synthesis of water soluble and pH-responsive natural silk fibroin (SF)-stabilized fluorescent copper nanoclusters (CuNCs) was reported without using any additional reducing agents, and the as-prepared SF@CuNCs exhibited a fluorescence emission at 420 nm with highly stable properties. The reversible pH sensor of the fluorescent SF@CuNCs has been designed based on the obvious fluorescence enhancing properties of CuNCs. Significantly, the SF@CuNCs described here were employed as pH sensors by virtue of the fluorescence intensity of their sensitive response to fluctuating pH in a linear range of 6.08-10.05. Meanwhile, the fluorescence intensity of the SF@CuNCs increased by around 8-fold at high pH values compared with a low pH of 6.08. As expected, the pH sensor was sensitive to different buffer solutions, and also presented a good linear relationship in different buffer solutions. Besides, the ionic strength of the buffers had a slight influence on the pH-responsive behavior and various metal ions showed almost no effects. The proposed method was successfully used to detect the pH of real water samples, thereby indicating its potential practical application.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36041
Appears in Collections:活体分析化学实验室_期刊论文

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作者单位: 1.Shanxi Univ, Ctr Environm Sci & Engn Res, Sch Chem & Chem Engn, Taiyuan 030006, Peoples R China
2.Chinese Acad Sci, Inst Chem, Key Lab Analyt Chem Living Biosyst, Beijing 100190, Peoples R China
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