Temperature-sensitive europium complexes of tris(dibenzoylmethane) mono(5-amino-1,10-phenanthroline)europium(III) [Eudatp] may be used to fabricate a dual optical sensor to detect oxygen and any change in temperature.This product may be used in the preparation of porphyrin–Eu-β-diketonate supramolecular nanostructures,and in the fabrication of silicon wafers grafted with europium complex.