Theoretical Design for Near-infrared Light Absorption of N3-skeleton Dye: Spin-forbidden Excitation

Abstract

We theoretically examine spin-forbidden excitations for an N3-skeleton Ru dye with a thienyl group and iodine anion by time-dependent density functional theory with spin-orbit coupling. We found that the oscillator strength in the near-infrared region and spin-orbit coupling are enhanced by introducing the thienyl group into bipirydyl ligands.