The Development of an Electrochemical Sensor Based on the Molecularly Imprinted Polymer with Melamine Imprints
Tuesday, March 4, 2025 10:00 AM to 12:00 PM · 2 hr. (America/New_York)
Expo Floor
Poster
Instrumentation & Nanoscience
Information
Abstract
Molecularly imprinted polymers (MIP) are artificially designed for increased selectivity for the target analyte 1. The application of conducting polymers in the design of the electrochemical sensor based on the MIP provides key advantages such as the ability to polymerize the MIP on any electrode shape and the control of the polymer layer thickness through the fine adjustment of polymerization settings 2. The applications of computational methods for in silico modelling can reduce the time and cost required for MIP optimization 3.
This study presents the development of an electrochemical melamine sensor based on the MIP 4. The melamine-imprinted polypyrrole was deposited on the graphite electrode and evaluated by differential pulse voltammetry (DPV) and scanning electron microscopy (SEM).
The results of this study demonstrate that the modification of the polymer with gold nanoparticles (AuNP) plays an important role: 1) the smaller diameter of the AuNP means a higher change in the current value; 2) the fine adjustment of AuNP concentration is necessary for the control of the apparent imprinting factor.
Keywords
Molecularly imprinted polymers (MIP); melamine; electrochemical sensor.
Acknowledgment
The authors are grateful to NextGenerationEU funding.
References
1. G. Pilvenyte, et al., Int. J. Mol. Sci., 2023, 24, 4105. https://doi.org/10.3390/ijms24044105
2. R. Boguzaite, et al., Chemosensors, 2023, 11, 549. https://doi.org/10.3390/chemosensors11110549
3. E. Mohsenzadeh, et al., Wiley Interdiscip. Rev. Comput. Mol. Sci., 2024, 14, e1713. https://doi.org/10.1002/wcms.1713
4. E. Brazys, et al., Microchem. J., 2024, 199, 109890. https://doi.org/10.1016/j.microc.2024.109890
Molecularly imprinted polymers (MIP) are artificially designed for increased selectivity for the target analyte 1. The application of conducting polymers in the design of the electrochemical sensor based on the MIP provides key advantages such as the ability to polymerize the MIP on any electrode shape and the control of the polymer layer thickness through the fine adjustment of polymerization settings 2. The applications of computational methods for in silico modelling can reduce the time and cost required for MIP optimization 3.
This study presents the development of an electrochemical melamine sensor based on the MIP 4. The melamine-imprinted polypyrrole was deposited on the graphite electrode and evaluated by differential pulse voltammetry (DPV) and scanning electron microscopy (SEM).
The results of this study demonstrate that the modification of the polymer with gold nanoparticles (AuNP) plays an important role: 1) the smaller diameter of the AuNP means a higher change in the current value; 2) the fine adjustment of AuNP concentration is necessary for the control of the apparent imprinting factor.
Keywords
Molecularly imprinted polymers (MIP); melamine; electrochemical sensor.
Acknowledgment
The authors are grateful to NextGenerationEU funding.
References
1. G. Pilvenyte, et al., Int. J. Mol. Sci., 2023, 24, 4105. https://doi.org/10.3390/ijms24044105
2. R. Boguzaite, et al., Chemosensors, 2023, 11, 549. https://doi.org/10.3390/chemosensors11110549
3. E. Mohsenzadeh, et al., Wiley Interdiscip. Rev. Comput. Mol. Sci., 2024, 14, e1713. https://doi.org/10.1002/wcms.1713
4. E. Brazys, et al., Microchem. J., 2024, 199, 109890. https://doi.org/10.1016/j.microc.2024.109890
Day of Week
Tuesday
Poster Format
Poster Abstract
Session Number
PS-I75
Application
Sensors
Methodology
Electrochemistry
Primary Focus
Methodology
Morning or Afternoon
Morning
Poster Co-Authors
Co-Authors
Enayat Mohsenzadeh - Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology (FTMC), Sauletekio Ave. 3, Vilnius LT-10257, Lithuania, Ernestas Brazys - Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University (VU), Naugarduko str. 24, Vilnius LT-03225, Lithuania, Arunas Ramanavicius - 1 Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology (FTMC), Sauletekio Ave. 3, Vilnius LT-10257, Lithuania 2 Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University (VU), Naugarduko str. 24, Vilnius LT-03225, Lithuania
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