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Updated: May 10, 2026
Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
Published on: July 22, 2013
A molecularly imprinted electrochemical sensor based on functionalized multi-walled carbon nanotubes and zeolitic
Xuyuan Sun1, Ying Wang1, Zhengyuan Dai1
1Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, PR China. lilidu@shu.edu.cn.
Abstract:
A molecularly imprinted electrochemical sensor (MIECS) was constructed for selective determination of amlodipine (AML) based on zeolitic imidazolate framework-8 (ZIF8) and carboxylated multi-walled carbon nanotubes (f-MWCNT). f-MWCNT enhanced the electron transfer rate of the sensor and amplified the current signal response. The rigid structure of ZIF8 can be used as a support material for the molecularly imprinted polymer (MIP) film to protect the imprinted cavity. The MIP film was obtained by electropolymerization with amlodipine (AML) as the template molecule and nicotinamide (NA) as the functional monomer. The sensor could complete the sensitive detection of AML in the linear range from 10-13 M to 10-7 M, with a detection limit of 3.21 × 10-14 M. In addition, the recovery in tap water and tablets was satisfactory.
