Universität Rostock, 2009
Abstract: A new invented method for labelling oligonucleotides with the electrochemical active complex [OsO4(bipy)] by means of a protection strand was adopted to long-chain nucleic acids and PCR(polymerase chain reaction)-products for the first time. Due to the fact, that this labelling reaction can only be performed at single-stranded nucleic acids, it was searched for different ways to create them. The detection of the labelled single-strands was carried out voltammetrically. Therefore the complementary probe strand, which was immobilized on a gold electrode had to hybridize with it. The investigation of different influences like temperature, reaction time and convection lead to an optimization of the labelling reaction and the hybridization event.
doctoral thesis free access