Long-lived platinum(ii) diimine complexes with broadband excited-state absorption: Efficient nonlinear absorbing materials

摘要

Platinum(ii) diimine complexes with naphthalimide substituted fluorenylacetylide ligands are synthesized and characterized. The complexes exhibit long-lived ~3ILCT or ~3ILCT/ ~3MLCT/ ~3LLCT excited states (τ = ～20-30 μs) and broadband triplet transient absorption in the visible-NIR region. Nonlinear transmission experiments at 532 nm demonstrate that these complexes are efficient nonlinear absorbing materials.