Citation: WU Wei-Zhen, HUANG Meng-Xia, HUANG Qing-Da, LYU Cai-Hua, LAI Jia-Ping, SUN Hui. Molecularly Imprinted Photonic Hydrogels for Visual Detection of Methylanthranilate in Wine[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(9): 1330-1336. doi: 10.19756/j.issn.0253-3820.191087 shu

Molecularly Imprinted Photonic Hydrogels for Visual Detection of Methylanthranilate in Wine

1.
School of Chemistry & Environment, South China Normal University, Guangzhou 510006, China;
2.
College of Environmental Science & Engineering, Guangzhou University, Guangzhou 510006, China

Received Date: 18 February 2019
Revised Date: 29 May 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos.21677053, 21876033).

Methylanthranilate (MA) is a kind of spice illegally added in the wine in China. The determination of MA in wine is an important quality control link. Therefore, it is of great significance to develop a rapid method for detection of prohibited spice in wine. In this work, an inverse opal structural molecularly imprinted photonic hydrogels (MIPHs) membrane was fabricated by using the photonic crystal techniques and molecular imprinting techniques. The MIPHs membrane was prepared by using methylanthranilate as template molecule, methacrylic acid as functional monomer, ethylene glycol dimethacrylate as cross linker, followed by a thermal polymerization at 60℃. Then the inverse opal structural MIPHs membrane was obtained after removing photonic crystal template and imprinted molecules. The results showed that the MIPHs membrane exhibited a good selectivity property to MA, and it responded to MA within 6 min. The Bragg diffraction peak shifted with increasing concentration of MA. A linear relationship was found between Δλ and the concentration of MA in the range from 0.1 mmol/L to 10 mmol/L. And the least detectable concentration was about 31 μmol/L. Furthermore, a color change of the MIPHs membrane couldbe observed by naked eyes. Therefore, the smart MIPHs membrane showed great potential in rapid and visual detection of MA in wine.
- Molecular imprinting,
- Photonic crystal,
- Visual detection,
- Methylanthranilate
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沈阳化工大学材料科学与工程学院沈阳 110142