Synthesis, redox, spectroscopic, and photophysical properties of a new class of Pt (II) complexes having a phenyl-or duryl (dimesityl) borane group at the 4'-position of a 2, 2': 6', 2''-terpyridine ligand are reported, and the spectroscopic/photophysical characteristics of the complexes are explained by the synergetic effects between Pt (II)-to-ligand charge transfer (CT) and intramolecular CT from the π orbital of the aryl group to the vacant p-orbital on ...