Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399706 | Journal of Luminescence | 2014 | 7 Pages |
Abstract
In this study, a simple procedure for the determination of λ-cyhalothrin was reported. CdTe quantum dots (QDs) capped by molecularly imprinted polymers (MIPs) were prepared and characterized by spectrofluorometer, Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM) and scanning electron microscope (SEM). Mercaptosuccinic acid (MSA) was chosen as a stabilizer for CdTe QDs synthesis. The MSA stabilizer which comprises both thioglycolic acid (TGA)-like and 3-mercaptopropionic acid (MPA)-like moieties could accelerate the whole growth process of CdTe QDs comparing with TGA-like or MPA-like stabilizer. Meanwhile, the spectrofluorometer was used to evaluate the optical stability, effect of pH, and selective and sensitive determination of λ-cyhalothrin (LC). Moreover, LC could quench the fluorescence of the molecularly imprinted silica nanospheres (CdTe@SiO2@MIPs) in a concentration-dependent manner, which was best described by a Stern-Volmer-type equation.
Related Topics
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Physical and Theoretical Chemistry
Authors
Xiao Wei, Minjia Meng, Zhilong Song, Lin Gao, Hongji Li, Jiangdong Dai, Zhiping Zhou, Chunxiang Li, Jianming Pan, Ping Yu, Yongsheng Yan,