Electrochemical Switching of Luminescence in Ru(II)-based Metallosupramolecular Polymer Device

摘要

A Ru(II)-based metallosupramolecular polymer RuLl was synthesized by complexation of a Ru(II) salt and phenylene-bis(terpyridine). The long polymer chains were observed on a Si substrate using atomic force microscopy. Interestingly, a RuLl film showed luminescence from the ~3MLCT state of the Ru(II) complex moieties at room temperature by excitation at the resonant wavelength of the ~MLCT absorption. In addition, we fabricated a solid-state polymer device with a RuLl film and achieved reversible switching of the luminescence by applying voltages (3 and —3 V) between indium tin oxide electrodes, which caused electrochemical redox between Ru(II) and Ru(III).