Substituent Effect on the Circularly Polarized Luminescence of <i>C</i><sub>1</sub>‐Symmetric Carbene‐Copper(I) Complexes
Erin E. Braker, Nishya F. M. Mukthar, Nathan D. Schley, Gaël Ung
Abstract
Abstract The substituent effect on the magnitude of the circularly polarized luminescence (CPL) of Ment CAAC‐Cu‐X (X=F, Cl, Br, I, BH 4 , B 3 H 8 ; CAAC=cyclic (alkyl)(amino)carbenes) complexes is experimentally investigated. This study examines seven pairs of enantiomeric complexes with small anionic substituents (halides, borohydrides, hydride). The complexes are fully characterized, including single crystal X‐ray diffraction studies, and chiroptical measurements show that small covalent anions induce a larger CPL magnitude. These results demonstrate that the magnitude of the CPL can be manipulated without making any modifications to the chiral ligand.
Topics & Concepts
SubstituentLuminescenceCarbeneChemistryCrystallographyHalideAlkylCopperEnantiomerHydrideLigand (biochemistry)Single crystalStereochemistryPhotochemistryMaterials scienceInorganic chemistryOrganic chemistryCatalysisOptoelectronicsBiochemistryHydrogenReceptorSynthesis and Properties of Aromatic CompoundsLuminescence and Fluorescent MaterialsSynthesis and characterization of novel inorganic/organometallic compounds