Abstract:
The study of electron transfer of the 5, 10, 15, 20-tetra(2'-thienyl)porphyrin, [T(2?-thio)PH2] (1), and their complexes has been performed by using voltammetry techniques and simulations based on Monte-Carlo methods. The synthesis of (1) is based on a modification of the synthetic procedure used for [T(3?-thio)PH2]. The chemical reaction between the synthesized compound and appropriate divalent metal precursors gives the metal complexes [T(2?-thio)P-MII], where M represents Co (2), Ni (3), Cu (4), Zn (5), and [T(2?-thio)P- MnIII(OAc)] (6). Using UV-Vis spectroscopy, the spectra show approximately a 5 nm blue-shift for all compounds relative to the free porphyrin. A voltammetry study of the compounds confirms that there are two one-electron oxidations and reductions. In the case the Co and Mn compounds, an additional metal-based reduction of CoII to CoI and MnIII to MnII is observed for each compound respectively. To compare the result obtained from the simulation and the experiment, we use the semi-integral analysis. The semi-integral analysis of both parts can be compared by rescaling the simulation in the x and y axes to that of the experiment. The rescaling is carried out to see how closely the simulation and the experiment fit.
WALAILAK UNIVERSITY. CENTER FOR LIBRARY RESOURCES AND EDUCATIONAL MEDIA