Redox-switching of nonlinear optical behavior in Langmuir-Blodgett thin films containing a ruthenium(II) ammine complex.

Alternating Langmuir−Blodgett multilayers containing a metal-to-ligand charge-transfer chromophore based on {RuII(NH3)5}2+ show redox-switching of the second harmonic generation from a 1064 nm laser.