Guest-Modulated Circularly Polarized Luminescence by Ligand-to-Ligand Chirality Transfer in Heteroleptic PdII Coordination Cages.
Angew Chem Int Ed Engl
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Wu, K., Tessarolo, J., Baksi, A., & Clever, G. H. (2022). Guest-Modulated Circularly Polarized Luminescence by Ligand-to-Ligand Chirality Transfer in Heteroleptic PdII Coordination Cages.. Angew Chem Int Ed Engl https://doi.org/10.1002/anie.202205725
Multicomponent metallo-supramolecular assembly allows the rational combination of different building blocks. Discrete multifunctional hosts with an accessible cavity can be prepared in a non-statistical fashion. We employ our shape-complementary assembly (SCA) method to achieve for the first time integrative self-sorting of heteroleptic PdII cages showing guest-tunable circularly polarized luminescence (CPL). An enantiopure helicene-based ligand (M or P configuration) is coupled with a non-chiral emissive fluorenone-based ligand (A or B) to form a series of Pd2 L2 L'2 assemblies. The modular strategy allows to impart the chiral information of the helicenes to the overall supramolecular system, resulting in CPL from the non-chiral component. Guest binding results in a 4-fold increase of CPL intensity. The principle offers potential to generate libraries of multifunctional materials with applications in molecular recognition, enantioselective photo-redox catalysis and information processing.
Research Article, Research Articles, Chirality Transfer, Circularly Polarized Luminescence, Coordination Cages, Host–Guest Chemistry, Supramolecular Chemistry
HORIZON EUROPE European Research Council (683083)
Deutsche Forschungsgemeinschaft (EXC2033-390677874, GRK2376-331085229)
External DOI: https://doi.org/10.1002/anie.202205725
This record's URL: https://www.repository.cam.ac.uk/handle/1810/338742