首页|In situ one-step electrochemical preparation of mesoporous molecularly imprinted sensor for efficient determination of indole-3-acetic
In situ one-step electrochemical preparation of mesoporous molecularly imprinted sensor for efficient determination of indole-3-acetic
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NSTL
Elsevier
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.
NSTL
Elsevier
