896099-49-3Relevant academic research and scientific papers
A novel molecularly imprinted polymer on CdSe/ZnS quantum dots for highly selective optosensing of mycotoxin zearalenone in cereal samples
Fang, Guozhen,Fan, Chao,Liu, Huilin,Pan, Mingfei,Zhu, Huidan,Wang, Shuo
, p. 2764 - 2771 (2014)
A novel molecularly imprinted optosensing material (MIOM) based on ionic liquid (IL)-stabilized CdSe/ZnS quantum dots (QDs) was prepared, for highly selective and sensitive recognition of the mycotoxin zearalenone (ZON). ZON is expensive and highly toxic, so the ZON analog cyclodo-decanyl-2,4- dihydroxybenzoate (CDHB) was instead used as the template. MIOM was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and adsorption experiment. Under optimal conditions, the relative fluorescence intensity of MIOM decreased linearly with increasing ZON concentration, in the range of 0.003-3.12 μmol L-1. MIOM had a detection limit of 0.002 μmol L-1. MIOM was used to detect ZON in corn, rice and wheat flours, and at three concentration levels 50, 100 and 500 ng g-1, ZON recoveries for these three cereals were 94.2-98.7%, 93.1-107.6% and 84.4-106.0%, respectively.
Novel molecularly imprinted polymers on metal-organic frameworks as sensors for the highly selective detection of zearalenone in wheat
Du, Qiuzheng,Wu, Pu,Hu, Fan,Li, Geyuan,Shi, Jianrong,He, Hua
, p. 7044 - 7050 (2019)
The work describes an opto-sensor for the highly sensitive detection of the zearalenone (ZON) in wheat. A molecularly imprinted polymer layer was coated onto the surface of a luminescent metal-organic framework with cyclodo-decanyl-2,4-dihydroxybenzoate (CDHB), an analog of ZON, chosen as the template and 3-aminopropyltriethoxysilane (APTES) as the functional monomer. The obtained MOF@MIP (MMIP) was fully characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), N2 adsorption-desorption measurements, and Fourier transform infrared spectroscopy (FT-IR). Under optimal conditions, the relative fluorescence intensity of MMIP decreased linearly with a concentration of ZON ranging from 0.05-1.0 mg L-1, with a detection limit of 0.018 mg L-1 and a good recovery of 95.53-98.01% (RSD 4.7%). The sensor was stable and selective. Ultimately, the rapid and accurate detection of zearalenone in wheat was successfully realized.
