Macrocyclic Compounds Based Chemically Modified Electrodes for Voltammetric Determination of L-Tryptophan Using Electrocatalytic Oxidation

Simultaneous electro-catalytic oxidative determination of ascorbic acid and folic acid using Fe3O4 nanoparticles modified carbon paste electrode

“…Carbon paste electrodes (CPE) are used in electrochemistry [21] due to their ease of construction, chemical inertness, better reproducibility and stability. Moreover CPE in the form of chemically modified carbon paste electrode (CME) have been widely used due to its enhancement in sensitivity of the electrochemical method [22][23][24][25]. Nanoparticles based CME's have been the spotlight because of their increased sensitivity, amplified response signal, and better reproducibility [26][27][28][29][30].…”

Simultaneous determination of ciprofloxacin and paracetamol by adsorptive stripping voltammetry using copper zinc ferrite nanoparticles modified carbon paste electrode

“…Recently, electrochemical determination of drugs using modied electrode has received much attention because of its easier fabrication, selectivity and better reproducibility. 39,40 Nanomaterials modied carbon paste electrodes have also been widely used for simultaneous determination of different analytes 41,42 because of their exceptional properties such as high electrical conductivity, high surface area, mechanical strength and good chemical stability. Nanomaterials promote electron transfer reactions at the electrode surface when used as modifying material.…”

Electrode Materials (Bulk Materials and Modification)

“…16.16) have been used to modify CPEs with the goal to improve the selectivity of their accumulation/ recognition properties. Examples of macrocyclic CPE modifiers with "more or less planar geometries" are: crown ethers (18-crown-6 [783][784][785] or dibenzo-18-crown-6 783,785 ), thiacrown compounds, 786 macrocyclic thiohydrazone, 787 or tetraazamacrocyclic compounds of the cyclam family 788 ; CPEs modified with such macrocyclic derivatives were used for various purposes such as electrocatalytic, voltammetric or potentiometric detection of metal ions or organics. In addition, cyclodextrins [789][790][791] or calixarenes, [792][793][794] both exhibiting very rich host-guest chemistry, have been incorporated into CPEs and subsequently used as sensors for metal ions and organic pollutants.…”