In situ one-step electrochemical preparation of mesoporous molecularly imprinted sensor for efficient determination of indole-3-acetic
文献类型： 外文期刊
作者： Liang, Jing 1 ; Yan, Feiyan 1 ; Jiang, Cuiwen 1 ; Xie, Liping 1 ; Wang, Yanli 1 ; Li, Tao 1 ; Zheng, Lufei 2 ; Wang, Jing 2 ; Ning, Dejiao 1 ; Tang, Li 1 ; Ya, Yu 1 ;
作者机构： 1.Guangxi Acad Agr Sci, Inst Agr Prod Qual Safety & Testing Technol, Nanning 530007, Peoples R China
2.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 100081, Peoples R China
关键词： Indole-3-acetic acid; Mesoporous molecularly imprinted sensor; In situ electrochemical preparation; Voltammetry
期刊名称：JOURNAL OF ELECTROANALYTICAL CHEMISTRY （ 影响因子：4.598； 五年影响因子：4.277 ）
ISSN： 1572-6657
年卷期： 2022 年 905 卷
页码：
收录情况： SCI
摘要： In this study, a one-step in situ method was developed for the preparation of mesoporous molecularly imprinted sensor for the determination of indole-3-acetic acid. The as-obtained molecularly imprinted films well maintained the mesoporous structure but numerous microporous formed after removal of indole-3-acetic acid. The molecularly imprinted sensors were characterized by various analytical techniques and the data indicated a substantial increase in the electroactive surface area and electrochemical properties of the as-prepared molecularly imprinted sensor thanks to the micro/nanoporous structure. The sensor also showed much better sensitivity and selectivity toward the electrochemical determination of indole-3-acetic acid when compared to both non-imprinted sensor and bare glassy carbon electrode. Under the optimal experimental conditions, the molecularly imprinted sensor displayed a good linear response toward indole-3-acetic acid from 0.080 to 10 mu M with a detection limit of 0.050 mu M (S/N = 3) and a good selectivity toward common interfering substances. Moreover, the as-prepared molecularly imprinted sensor successfully determined indole-3-acetic acid in real samples composed of soybean sprout and mungbean sprout. In sum, the suggested simple strategy looks promising for the construction of high sensitivity and selectivity electrochemical sensors.
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