New planar working microelectrodes were fabricated using standard polymer TFT (see Fig 1) and their
surface was modified with MWCNTs. Both types of electrodes were examined optically using SEM. Bare
surface of BQ221 carbon electrode is shown in the Fig 2a and the electrode surface modified with
MWCNTs is shown in the Fig 2b. From the Fig 2b is clear that The electrochemical characterization of all electrodes was done using CV in 0.05 mol.L-1 phosphate
buffer solution (pH 7.4). Obtained voltammograms for bare carbon TFT underlay and MWCNTs/DMF
modified electrode are shown in the Fig 3a. From the Fig 3a is clear that the current response of modified
electrode is just a little bit higher than the signal from bare electrode.the modification was successful and we
obtained high-porous electrode surface full of free MWCNTs.