Bromine-bromine interactions enhanced plasticity for the bending of a single crystal without affecting fluorescent properties

Ethyl 3-(3-bromo-4-methoxy-phenyl)-2-cyano-acrylate crystals exhibited very superior plasticity and shape persistent, selfstanding properties compared to their non-bromo analogue. The crystal plasticity, controlled by a bromine-bromine interaction, has been found to play a crucial role in generating a slip plane and thus, under mechanical force, the crystals undergo bending without affecting their fluorescent properties.