Dye-functionalized Carbon Nanotubes Modified Electrode Structure Set And Its Electrochemical Studies

Because of its specific structure and excellent electrical properties, Carbon nanotubes(CNT) have been an interested electrode material in recent years. Dye molecules are always a hot topic in the field of electrode modification due to its own conjugation system and the promotion ability on electron transition. In the present dissertation, Electro-polymerization was employed to modified CNT with four different kinds of dyes, and an interpenetrating polymer network(IPN) was fabricated. Taking dopamine(DA) and ascorbic acid(AA) as model compounds, the IPN system was studied by electro-chemical methods, and we found that the IPN system could efficiently combine the advantages of CNT and dyes without destroying the structure of CNT. PARS/CNT and PMG/CNT modified electrode can be used in the discrimination and detection of DA and AA. PMB/CNT and PNR/CNT modified electrode have a satisfied detecting sensitivity.The main achievements obtained in this research include:1) Taking Alizarin Red as the modified material to CNT, an alizarin red functional carbon nanotube modified electrode has been used to the electro-chemical analysis of DA and AA.2) Taking Malachite Green as the modified material to CNT, a Malachite Green functional carbon nanotube modified electrode has been used to the electro-chemical analysis of DA and AA.3) Taking DA, AA and Sn²⁺ as model compounds, the membranes of Neutral Red and Methylene blue have been contrastively studied.