Svir I. The mathematical and computer modelling of the mass transport processes in organic electrochemiluminescent systems

The thesis is dedicated to the theoretical study of the mass transport processes in organic electrochemiluminescent (ECL) systems with microelectrodes of various geometries under different regimes of excitation of ECL. The mathematical modelling has been carried out using existing numerical methods and new approaches developed to resolve the edge singularity problem for microelectrodes of different shapes. Results of the modelling can be employed in ecological and biomedical investigations, in modern microelectrode electrochemistry and in microelectronics. The two new approaches for investigation of diffusion-convection mass transport in a channel flow cell with a microband electrode under non-steady state conditions of electrolysis have been suggested. These approaches were applied to investigation of ECL processes in a channel flow cell with double microband electrodes. A new method of simulation of the diffusion ECL kinetics at a microdisc electrode using the spherical co-ordinates has been proposed. A modification of generalised Thomas algorithm was derived to improve the efficacy of simulations. A new program package "ECL-PACKAGE" for ECL investigation in system with microelectrodes has been created.