title: Carbon dots as fluorescent probe for "off-on" Detecting sodium dodecyl-benzenesulfonate in aqueous solution.
abstract: In this paper, we propose an "off-on" approach for the detection of sodium dodecyl-benzenesulfonate (SDBS) using carbon dots (CDs) as fluorescent probe. We firstly demonstrated that the fluorescence of CDs decreased apparently in the presence of ruthenium (Ru), and the system was thus "turn-off". The resulting CDs-Ru system was found to be sensitive to SDBS, SDBS not only serves to shelter the CDs effectively from being quenched, but also to reverse the quenching and restore the fluorescence due to its ability to remove Ru from the surface of CDs (turn-on). An eco-friendly, simple and sensitive platform for the detection of SDBS based on the CDs-Ru probes has been proposed. After the experimental conditions were optimized, the linear range for detection SDBS was 0.10-7.50 μg/mL, with correlation coefficient (r) 0.9988, detection limit was 0.033 μg/mL (3σ). This method is facile, rapid, low cost, environment-friendly, and possesses the potential for practical application.
authors: Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China. Electronic address: thl@glut.edu.cn.
authors: Huilin
authors: H
authors: Tao
authors: Guangxi Zhuang Autonomous Region Testing Institute of Product Quality, Nanning 530007, China.
authors: Xiufen
authors: X
authors: Liao
authors: Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
authors: Qingyi
authors: Q
authors: Wu
authors: Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
authors: Xiangli
authors: X
authors: Xie
authors: Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
authors: Fuxin
authors: F
authors: Zhong
authors: Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
authors: Zhongsheng
authors: Z
authors: Yi
authors: Guangxi Zhuang Autonomous Region Testing Institute of Product Quality, Nanning 530007, China.
authors: Mei
authors: M
authors: Qin
authors: Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
authors: Zhenli
authors: Z
authors: Wu
keywords: Carbon dots; Dodecyl-benzenesulfonate; Ru; “Off–on” fluorescence probe