Aggregation Induced Emission Dynamic Chiral Europium(III) Complexes with Excellent Circularly Polarized Luminescence and Smart Sensors

The synthesis of dynamic chiral lanthanide complex emitters has always been difficult. Herein, we report three pairs of dynamic chiral EuIII complex emitters (R/S-Eu-R-1, R = Et/Me; R/S-Eu-Et-2) with aggregation-induced emission. In the molecular state, these EuIII complexes have almost no obvious emission, while in the aggregated state, they greatly enhance the EuIII emission through restriction of intramolecular rotation and restriction of intramolecular vibration.