The electrocatalytic oxidation of thymine at α-cyclodextrin incorporated carbon nanotube-coated electrode

Electrocatalyticoxidation of thymine at alpha-cyclodextrin (alpha-CD) incorporated carbon nanotube-coated electrode (CNT/CE) was thoroughly studied in alkaline media. CNT showed an electrocatalytic effect on the oxidation of thymine. formation of a supramolecular inclusion complex between a-CD and thymine at CNT/CE further enhanced the sensitivity to thymine. The electrocatalytic behavior was further developed as a sensitive detection scheme for thymine by differential pulse voltammetry. A linear calibration over the concentration range from 2.5 x 10(-5) to 1.8 x 10(-3) mol/L in pH 10.8 NaHCO3- Na2CO3 buffer solution was obtained with a detection limit of 5 x 10(-6) mol/L.