Ligand Chirality Transfer from Solution State to the Crystalline Self‐Assemblies in Circularly Polarized Luminescence (CPL) Active Lanthanide Systems

Caffrey, David F.; Gorai, Tumpa; Rawson, Bláithín; Martínez‐Calvo, Miguel; Kitchen, Jonathan A.; Murray, Niamh S.; Kotova, Oxana; Comby, Steve; Peacock, Robert D.; Stachelek, Patrycja; Pal, Robert; Gunnlaugsson, Thorfinnur

Abstract

The synthesis of a family of chiral and enantiomerically pure pyridyl‐diamide (pda) ligands that upon complexation with europium [Eu(CF3SO3)3] result in chiral complexes with metal centered luminescence is reported; the sets of enantiomers giving rise to both circular dichroism (CD) and circularly polarized luminescence (CPL) signatures. The solid‐state structures of these chiral metallosupramolecular systems are determined using X‐ray diffraction showing that the ligand chirality is transferred from solution to the solid state. This optically favorable helical packing arrangement is confirmed by recording the CPL spectra from the crystalline assembly by using steady state and enantioselective differential chiral contrast (EDCC) CPL Laser Scanning Confocal Microscopy (CPL‐LSCM) where the two enantiomers can be clearly distinguished.

Citation

Caffrey, D. F., Gorai, T., Rawson, B., Martínez‐Calvo, M., Kitchen, J. A., Murray, N. S., …Gunnlaugsson, T. (2024). Ligand Chirality Transfer from Solution State to the Crystalline Self‐Assemblies in Circularly Polarized Luminescence (CPL) Active Lanthanide Systems. Advanced Science, 11(18), Article 2307448. https://doi.org/10.1002/advs.202307448

• Journal Article Type: Article
• Acceptance Date: Feb 22, 2024
• Online Publication Date: Mar 6, 2024
• Publication Date: May 15, 2024
• Deposit Date: May 21, 2024
• Publicly Available Date: May 21, 2024
• Journal: Advanced Science
• Publisher: Wiley Open Access
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 18
• Article Number: 2307448
• DOI: https://doi.org/10.1002/advs.202307448
• Keywords: pyridyl‐diamide (pda), coordination chemistry, lanthanide luminescence, self‐assembly, circularly polarized luminescence (CPL)
• Public URL: https://durham-repository.worktribe.com/output/2313682