A simple and sensitive surface molecularly imprinted polymers based fluorescence sensor for detection of λ-Cyhalothrin.
In this study, surface molecularly imprinted YVO4:Eu(3+) nanoparticles with molecular recognitive optosensing activity were successfully prepared by precipitation polymerization using λ-Cyhalothrin (LC) as template molecules, methacrylic acid and ethylene glycol dimethacrylate as the polymerization precursors which could complex with template molecules, and the material has been characterized by SEM, TEM, FT-IR, XRD, TGA and so on. Meanwhile, the as-prepared core-shell structured nanocomposite (YVO4:Eu(3+)@MIPs), which was composed of lanthanide doped YVO4:Eu(3+) as fluorescent signal and surface molecular imprinted polymers as molecular selective recognition sites, could selectively and sensitively optosense the template molecules. After the experimental conditions were optimized, two linear relationship were obtained covering the concentration range of 2.0-10.0 μM and 10.0-90.0 μM, and the limit of detection (LOD) for LC was found to be 1.76 μM. Furthermore, a possible mechanism was put forward to explain the fluorescence quenching of YVO4:Eu(3+)@MIPs. More importantly, the obtained sensor was proven to be suitable for the detection of residues of LC in real examples. And the excellent performance of this sensor will facilitate future development of rapid and high-efficiency detection of LC.
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address: lcbszl@163.com.
Chunbo
C
Liu
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Zhilong
Z
Song
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address: pjm013236@yahoo.cn.
Jianming
J
Pan
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Yongsheng
Y
Yan
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Zhijing
Z
Cao
School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
Xiao
X
Wei
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Lin
L
Gao
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Juan
J
Wang
School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
Jiangdong
J
Dai
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Minjia
M
Meng
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Ping
P
Yu
D015374:Biosensing Techniques; D004305:Dose-Response Relationship, Drug; D005063:Europium / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry; D009570:Nitriles / Q000032:analysis*; D055095:Optics and Photonics; D011108:Polymers / Q000737:chemistry; D011722:Pyrethrins / Q000032:analysis*; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
D005456:Fluorescent Dyes; D009570:Nitriles; D011108:Polymers; D011722:Pyrethrins; D005063:Europium; C037304:cyhalothrin
Detection; Fluorescent; Quenching; Surface molecular imprinted; λ-Cyhalothrin