Abstract: Seven platinum(Ⅱ) complexes containing 2-phenylisoquinoline or its derivatives were prepared and the structures and properties of complexes were characterized by 1H/13C NMR, TGA, X-ray single crystal diffraction, CV, UV-Vis and PL etc. The results show that these platinum(Ⅱ) complexes keep planar coordination geometry around Pt atom, and exhibit red phosphorescence from the metal-to-ligand charge-transfer(MLCT)(407, 444, 463 nm) and ligand center(LC)(353, 363, 376 nm) of mixedstate with quantum efficiency of 0.02~0.06 and lifetimes of 1.78~3.33 μs at room temperature in the DCM solution. Steric hindrance of the peripheral substituent effectively inhibits the intermolecular interaction.

Key words: Pt(II) complex, phenylisoquinoline, red emitting, square-planar configuration, intermolecular interaction