4.5 Article

A Novel and Selective Methylene Blue Imprinted Polymer Modified Carbon Paste Electrode

Journal

ELECTROANALYSIS
Volume 25, Issue 5, Pages 1278-1285

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200569

Keywords

Molecular imprinted polymers; Electrochemical sensors; Carbon paste electrodes; Methylene blue

Funding

  1. Turkish Scientific and Technological Research Council (TUBITAK) [109T813]
  2. TUBITAK

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In this study, methylene blue (MB) imprinted microbeads were synthesized and characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).Differential pulse voltammetric responses of carbon paste electrodes modified with MB imprinted polymer were used to evaluate the adsorption and selectivity features of the polymer. For selectivity studies two basic dyestuffs (thionine blue and toluidine blue) which have similar structure to MB were chosen. Comparison of the voltammetric responses obtained with pure carbon paste and carbon paste modified with either imprinted or nonimprinted polymer electrodes revealed that MB imprinted polymer presented a higher selectivity to the template molecule MB in contrast to structurally similar molecules, thionine blue and toluidine blue.

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