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Exploring novel electroanalytical approach using MWCNT nanostructures to quantify nimodipine.

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  • 1Redox Processes Research Center (CiPRex) and Organic and Physical Chemistry Department, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Postal Code 838492, Santiago, Chile.

Talanta
|December 3, 2023
PubMed
Summary

Researchers developed a novel electrochemical sensor using buckypaper modified with multiwalled carbon nanotubes to detect Nimodipine (NMD) drug. This sensor successfully determined NMD in commercial tablets with high accuracy and sensitivity.

Keywords:
BuckypaperMultiwalled carbon nanotubesNimodipineScreen-printed electrodes

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Pharmaceutical Analysis

Background:

  • Nimodipine (NMD) is a drug with electroactive functional groups (nitroaromatic and dihydropyridine).
  • Electrochemical sensors offer sensitive and selective detection methods for pharmaceuticals.

Purpose of the Study:

  • To develop and validate a novel electrochemical sensor for Nimodipine (NMD) detection.
  • To utilize buckypaper (BP) composed of multiwalled carbon nanotubes (MWCNT) for sensor fabrication.

Main Methods:

  • Fabrication of glassy carbon electrodes (GCE) and screen-printed electrodes (SPE) modified with BP-MWCNT.
  • Development of amperometric and voltammetric (DPV, linear voltammetry) detection strategies based on NMD's redox properties.
  • Application of Batch Injection Analysis Cell (BIAS) for SPE-based detection.

Main Results:

  • The BP-MWCNT modified electrodes effectively adsorbed and detected NMD.
  • The sensor achieved high recovery (98.24%) and low detection/quantification limits (7.01 mgL⁻¹ and 23.35 mgL⁻¹ using DPV).
  • Successful determination of NMD in commercial pharmaceutical tablets.

Conclusions:

  • A sensitive and reliable electrochemical sensor for Nimodipine (NMD) was successfully developed.
  • The BP-MWCNT composite material is a promising platform for electrochemical sensing applications.
  • The developed sensor demonstrates practical utility for pharmaceutical analysis.