A deep red phosphorescent Ir(III) complex for use in polymer light-emitting diodes: Role of the arylsilyl substituents

作者：You Youngmin; An Cheng Guo; Kim Jang Joo; Park Soo Young^*

来源：Journal of Organic Chemistry, 2007, 72(16): 6241-6246.

DOI：10.1021/jo070968e

Here we report the synthesis and electrophosphorescence of a new deep-red phosphorescent Ir(III) complex with spatially embracing and thus solubilizing arylsilyl-substituted ligands, Ir(III) tris(2-(2'-benzo[b]thienyl)-5-(4'-triphenylsilylphenyl)pyridinato-N,C-3'). A poly(N-vinylcarbazole) (PVK) film doped with this Ir(III) complex exhibited excellent phase homogeneity and showed saturated red electrophosphorescence of 2.7% maximum external quantum efficiency, whose Commission Internationale de L'Eclairage coordinates were (0.69, 0.30).

• 出版日期2007-8-3