Synthesis, Characterization And Properties Of Ferrocene Derivatives Research

Based on the investigation of a great deal of literatures, the synthesis, structures and properties of ferrocene and its derivative dendrimers are briefly reviewed. The recent progresses in the research of nonlinear optical (NLO), electrochemical and photochemical properties of ferrocenyl derivatives are also reviewed.In order to search the materials with strong two-photon absorption (TPA) effect, good electrochemical and photochemical properties, we have done the researches as follows:1) Six ferrocenyl derivatives and two mixed-valence compounds have been designed and synthesized. They have similar structural characteristics with conjugated π-electron system, which is beneficial to electron delocalization and enhancement of NLO responses of the materials.In the process of synthesis, we have developed a solvent-free Wittig reaction method which is fast, mild and efficient.2) All the compounds mentioned above were characterized with IR, UV-Vis, 1H-NMR, MS spectra and elemental analysis. Moreover, the structures of N-ethyl-3-ferrocenylethene carbazole and N-ethyl-3,6-diferrocenylethene carbazole were confirmed by single-crystal X-ray and intermolecular π-π stacking in two crystals were discovered.3) The electrochemical properties of ferrocenyl derivatives were studied in detail by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and in-situ Fourier transform infrared (FTIR) spectroelectrochimistry. The mechanisms of the intromolecular electron transfer were discussed. The results revealed that they have good electrochemical activities.4) In the thesis, it was described that the luminescene of Ru(bpy)32+ could be quenched efficiently by the ferrocenyl derivatives. Meanwhile, the process of the photoinduced intermolecular electron transfer was studied and the quenching rateconstants were determined using the steady state method.5) The TPA coefficient B and TPA cross-section o for the compounds studied were determined by Z-scan technique at 532 nm laser pulses. The optical limiting (OL) properties of the three compounds of them were shown.