In Situ Spectroelectrochemical Investigations of Ru-II Complexes with Bispyrazolyl Methane Triarylamine Ligands
Carol Hua, Brendan F Abrahams, Floriana Tuna, David Collison, Deanna M D'Alessandro
Australian Journal of Chemistry | CSIRO Publishing | Published : 2017
The synthesis and characterization of two triarylamine ligands, 4-(di(1H-pyrazol-1-yl)methyl)-N-(4-(di(1H-pyrazol-1-yl)methyl)phenyl)-N-phenylaniline (TPA-2bpm) and tris(4-(di(1H-pyrazol-1-yl)methyl)phenyl)amine (TPA-3bpm), containing the bispyrazolylmethane moiety and its RuII terpyridine complexes are presented. The redox properties of the ligands and RuII complexes are explored in detail through cyclic and square-wave voltammetry in addition to in situ UV-vis-near infrared, electron paramagnetic resonance, and fluorescence spectroelectrochemistry. It was demonstrated that the triarylamine radical cation was able to be generated, and further, TPA-2bpm underwent an electrochemically induced..View full abstract
We gratefully acknowledge support from the Australian Research Council and the Engineering and Physical Sciences Research Council UK National Electron Paramagnetic Resonance Service at the University of Manchester. The crystal structure of TPA-3bpm was obtained using the MX1 beamline at the Australian Synchrotron, Victoria, Australia.