Electrochemistry And In-situ Spectroelectrochemistry Studies Of Carbazoles, A Series Of Ferrocenyl Derivatives

The method, the experimental technique and applications of in-situ FTIR spectroelectrochemistry (FTIRs) were reviewed firstly in this paper. A systematic investigation of the behavior of two kinds of bioactive materials and a series of novel non-linear optical materials was undertaken by electrochemistry and in-situ FTIR spectroelectrochemistry. The dissertation focuses on the following aspects: the mechanism of electrochemical redox reactions of carbazole(CZ) and 9,ethyl -carbazole(ECZ), and electron transfer behavior of five novel ferrocenyl derivatives. These studies provide useful information at molecular lever for molecule designs of novel functional materials and understanding of the reaction pathways of these bioaction species.1. Mechanisms of electron transfer of carbazole (CZ) and 9-ethylcarbazole (ECZ) were studied by electrochemistry and in-situ FTIRs and in-situ UV. The result indicated that the electrochemical reaction mechanism of ECZ was the same as that of CZ. Both of them undergo ECE process: the initial step is a removal of one electron to generate a very reactive cation radical, this species then reacts by deprotonation -coupling to form the corresponding dimer, and the dimer continues to be oxidized.2. Electron transfer mechanisms and electron pass pathway of five novel ferrocenyl derivatives were studied by electrochemistry and in-situ FTIRs. The effects of different substitutes on electrochemical behavior of complexes were discussed. The result indicated that 2FcPh, 2Fc2Ph, 3FcPh, and 2FcCZ all involved two or three consecutive one-electron steps in the redox process, and the conclusions of in-situ FTIRs experiments confirm the results of electrochemical exeperiments again, meanwhile, the results of in-situ FTIRs also suggest the possible pathway ofelectron transfer in the conjugated π-electron system of the whole molecule.