Guest-Modulated Circularly Polarized Luminescence by Ligand-to-Ligand Chirality Transfer in Heteroleptic Pd II Coordination Cages.
Kai WuJacopo TessaroloAnanya BaksiGuido H CleverPublished in: Angewandte Chemie (International ed. in English) (2022)
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 Pd II 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 Pd 2 L 2 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.
Keyphrases
- energy transfer
- water soluble
- drug delivery
- capillary electrophoresis
- ionic liquid
- quantum dots
- light emitting
- cancer therapy
- healthcare
- health information
- mass spectrometry
- risk assessment
- binding protein
- metal organic framework
- gram negative
- climate change
- human health
- dna binding
- social media
- transcription factor
- single molecule