Crystal structure and temperature-dependent luminescence of a heterotetranuclear sodium–europium(iii) β-diketonate complex

Abstract

A heterotetranuclear Na₂Eu₂ complex with uncommon photoluminescence properties is reported. The complex exhibits good emission efficiency at ambient temperature, coupled with strong temperature dependence of the emission intensity and lifetime in the 273–333 K range, all of which are key features for non-contact luminescence-based thermometers capable of sensing and imaging temperatures in the physiological range.