Turning Up Chirality: Hydrostatic Pressure Boosts Circularly Polarized Luminescence in Europium Complexes

Abstract

Herein, we examine the ability of hydrostatic pressure to directly influence intra-and intermolecular distances and chiral organisation and systematically investigate pressure-responsive circularly polarised luminescence in optically inactive europium complexes doped with axially chiral 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl and point-chiral (R,R)-(-)-2,3-bis(tertbutylmethylphosphino)quinoxaline ligands. A new molecular design strategy for pressure-responsive sensing materials is described.