Electroswitchable fluorescent thin film controlled by polyoxometalate

Abstract

We have fabricated an organic/inorganic hybrid thin film based on a Dawson-type polyoxometalate P2W18O626− (P2W18) and a luminescent transition metal complex tris(2,2′-bipyridine)ruthenium [Ru(bpy)3]2+ (Rubpy) by using a layer-by-layer assembly technique, which functions as an electroswitchable fluorescent device operated by electrochemical stimulation.