Enhanced luminescence stability with a Tb–spin crossover nanocomposite for spin state monitoring

Abstract

[Fe(Htrz)₂(trz)]BF₄@SiO₂ nanorods were synthesized using a reverse emulsion technique and a Tb³⁺ complex was chemically bound to the silica surface. This Tb–spin crossover nanocomposite demonstrates high luminescence stability under continuous thermal cycling. A reabsorption mechanism is determined to be responsible for the luminescence intensity variation during the spin state switching of the iron complex.