Development of long‐persistent photoluminescent epoxy resin immobilized with europium (II)‐doped strontium aluminate

A facile approach for possible industrial production of long‐persistent phosphorescence, continuing to emitting light for a long time period, smart cobbles were developed toward photoluminescent hard surfaces. The inorganic strontium aluminium oxide pigment doped with rare earth elements was added to a synthetic organic epoxy in the presence of polyamine as a hardener to make a phosphor‐loaded viscous fluid that can then be hardened in a few...