Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (2): 212.doi: 10.7503/cjcu20170571

• Analytical Chemistry • Previous Articles     Next Articles

Investigation on Sulfamethazine Molecularly Imprinted Two-dimensional Photonic Crystal Hydrogel Sensor

CHEN Xiaojuan, LIU Genqi*(), REN Chenrui, GAO Minjun, FAN Xiaodong   

  1. Shaanxi Key Laboratory of Macromolecular Science and Technology, Department of Applied Chemistry,School of Science, Northwestern Polytechnical University, Xi’an 710129, China
  • Received:2017-08-21 Online:2018-02-10 Published:2017-12-08
  • Contact: LIU Genqi E-mail:liugenqi@nwpu.edu.cn
  • Supported by:
    † Supported by the Natural Science Basic Research Project of Shaanxi Province, China(No.2017JM5049) and the Seed Foundation of Innovation and Creation for Graduate Students in Northwestern Polytechnical University, China(No;Z2017209)

Abstract:

A novel sensor for the rapid and label-free detection of sulfamethazine, based on the combination of photonic crystal and molecular imprinting technique, was developed. The molecularly imprinted photonic hydrogel(MIPH) was prepared using sulfamethazine as the template molecule. The results showed that the diameter of Debye ring increased 0.9 cm when the concentration of SM2 changed from 0 to 1×10-6 mol/L, namely, the lattice spacing decreased 46 nm. When the ratio of crosslinking of MIPH is 10% and the molar ratio of imprinting molecule to functional monomer is 1∶75, the diameter of Debye ring is the largest. In addition, the diameter of Debye ring only increased 0.2, 0.25, 0.3 and 0.4 cm, respectively when the hydrogel immersed in 1×10-6 mol/L roxithromycin(RM), tetracycline(TE), sulfonisoxazole(SIZ) and sulfadiazine(SDZ) solution, indicating that the MIPH had a high selectivity. The sensor was also tested for simulated water samples and sulfadimethanol veterinary tablets, and all of them had high responsiveness. The application of such a sensor with high selectivity, high sensitivity, and easy operation might offer a new method for rapid real-time detection of Sulfamethazine.

Key words: Sulfamethazine, Molecularly imprinting, Two-dimensional photonic crystal, Hydrogel, Sensor

CLC Number: 

TrendMD: