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Yang S, Li L, Zhang X, Shang P, Ding S, Zha W, Xu W. Electrochemical determination of thrombin with molecularly imprinted polymers and multiwalled carbon nanotubes. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The preparation and application of reagentless electrochemical thrombin molecularly imprinted sensors were studied using multiwalled carbon nanotubes as sensitivity-enhanced materials. The molecularly imprinted polymer film was prepared by the electropolymerization of o-phenylenediamine with thrombin as the template molecule onto the surface of multiwalled carbon nanotubes modified glassy carbon electrode. After removing thrombin, the poly-o-phenylenediamine molecularly imprinted film was obtained with specific recognition for thrombin. Using the poly-o-phenylenediamine molecularly imprinted polymers as the electron probe, the electrochemical molecularly imprinted sensor was fabricated for the detection of the protein thrombin. Under optimized experimental conditions, the sensor exhibited a good linear response from 10.0 fg/mL to 1.0 μg/mL for thrombin, with correlation coefficient 0.999 and a low detection limit of 1.7 fg/mL. The fabricated molecularly imprinted sensor can be applied to the detection of thrombin in actual sample bovine serum with satisfactory results.
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Affiliation(s)
- Shaoming Yang
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
| | - Lingling Li
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
| | - Xiaorong Zhang
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
| | - Peiling Shang
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
| | - Shaoqing Ding
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
| | - Wenling Zha
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
| | - Wenyuan Xu
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
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Yang S, Zheng Y, Zhang X, Ding S, Li L, Zha W. Molecularly imprinted electrochemical sensor based on the synergic effect of nanoporous gold and copper nanoparticles for the determination of cysteine. J Solid State Electrochem 2016. [DOI: 10.1007/s10008-016-3213-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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