73087-82-8Relevant academic research and scientific papers
Organic Electron Transfer Agents, I. Electrochemical and Spectroscopical Study of Bromo-substituted Triarylamine Redox Systems
Schmidt, Werner,Steckhan, Eberhard
, p. 577 - 585 (2007/10/02)
The redox behaviour of the bromo-substituted triarylamines 2-7 has been studied by cyclic voltammetry.The oxidation potentials of the redox pair amine/cation radical strongly depend on the degree of substitution in ortho-position showing a smaller sterical influence in addition to a strong electronic effect.The second oxidation potential, cation radical/dication, is influenced by substitution to a much smaller degree.The UV/VIS spectra of the corresponding cation radicals are shifted bathochromically with increasing ortho-substitution.A linear relationship between redox potentials of the amines and long wave-length absorbance maxima of the cation radicals is observed.Redox potentials and UV/VIS spectra allow partial analysis of the term schemes of the amines and the corresponding cation radicals.ESR spectra of the cation radicals show broad and unresolved signals.
