Feng Yuanjiao, Zhong Dan, Miao Hong, Yang Xiaoming
College of Pharmaceutical Sciences, Engineer Research Center of Chongqing Pharmaceutical Process and Quality Control, Southwest University, Chongqing 400715, China.
College of Pharmaceutical Sciences, Engineer Research Center of Chongqing Pharmaceutical Process and Quality Control, Southwest University, Chongqing 400715, China.
Talanta. 2015 Aug 1;140:128-133. doi: 10.1016/j.talanta.2015.03.038. Epub 2015 Mar 27.
Herein, an innovative and simple method for synthesizing carbon dots (CDs) with satisfactory fluorescence has been successfully established while rose flowers served as carbon source for the first time. Meanwhile, the fluorescence (FL) mechanism of current CDs was elucidated in detail by fluorescence, UV-vis, HR-TEM, and FTIR-based analyses. Subsequently, this type of CDs was employed for detecting tetracycline (TC) on the basis of the interactions between TC and CDs, and allowed quenching their fluorescence. Moreover, the proposed analytical strategy permitted detecting TC in a linear range of 1.0×10(-8)-1.0×10(-4) mol/L with a detection limit of 3.3×10(-9) mol/L at a signal-to-noise ratio of 3. Significantly, the CDs described here were further applied for fluorescent coding, demonstrating their promising future towards various applications in analytic science.
在此，首次以玫瑰花朵作为碳源，成功建立了一种创新且简单的合成具有良好荧光的碳点（CDs）的方法。同时，通过荧光、紫外-可见光谱、高分辨率透射电子显微镜和傅里叶变换红外光谱分析，详细阐明了当前碳点的荧光（FL）机制。随后，基于四环素（TC）与碳点之间的相互作用，将此类碳点用于检测四环素，可使碳点的荧光猝灭。此外，所提出的分析策略能够在1.0×10⁻⁸ - 1.0×10⁻⁴ mol/L的线性范围内检测四环素，在信噪比为3时的检测限为3.3×10⁻⁹ mol/L。值得注意的是，此处所述的碳点进一步应用于荧光编码，展示了其在分析科学中各种应用的广阔前景。
