Synthesis, structures and spectroelectrochemical aspects of Ruthenium terpyridine complexes incorporating azo-imine based ancillary functionalities

The development of newer classes of photo-redox active ruthenium polypyridine derivatives has been the subject matter of continuous research activity. Facile electron-transfer properties, strong metal-to-ligand charge-transfer absorptions and long-lived 3MLCT excited states of this class of complexes make them attractive for the designing of photochemical and electrochemical devices. In this regard a wide variety of ruthenium bipyridine and phenanthroline complexes have been synthesised and studied extensively over the last three decades in order to modulate their photochemical and photophysical properties. However, the corresponding terpyridine complexes have not been explored to that extent. Although the terpyridine type of tridentate ligand has structural advantages over the bidentate bipyridine and phenanthroline ligands, it has a serious drawback from photophysical point of view. More Info

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