| Title |
Elektrodų, modifikuotų laidžiais polimerais, tyrimas ir taikymas elektroanalizės tikslams / |
| Translation of Title |
Studies of conducting polymer- modified electrodes and their application for electroanalysis. |
| Authors |
Barzdžiuvienė, Kristina |
| Full Text |
|
| Pages |
113 |
| Keywords [eng] |
Ascorbate sensor ; electrocatalysis ; polyaniline ; poly(N-methylaniline) ; electroanalysis |
| Abstract [eng] |
The main purpose of this work - to investigate patterns of electrochemical oxidation of ascorbic acid on polyaniline and poly(N-methylaniline) modified electrodes, in order to develop ascorbate-sensitive sensors. A detailed study of various factors affecting the aniline and N-methylaniline electrochemical polymerization and the resulting properties of PANI and PNMA layers was carried out for this purpose. Comparative study of modified electrodes in solutions of different acidity was performed and it was shown that PNMA had a better redox activity in slightly acidic and neutral solutions compared to polyaniline. The nature of amperometric response of modified electrodes to ascorbate was investigated and autocatalytic mechanism of ascorbate electrooxidation on PANI modified electrode was suggested. Using PANI and PNMA modified electrodes, prototypes of amperometric ascorbate sensors have been developed and their comparative studies were carried out. |
| Type |
Doctoral thesis |
| Language |
Lithuanian |
| Publication date |
2010 |
