Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes

Willis, Oliver G.; Petri, Filippo; De Rosa, Davide F.; Mandoli, Alessandro; Pal, Robert; Zinna, Francesco; Di Bari, Lorenzo

Abstract

We report the synthesis of chiral lanthanide complexes with extended π conjugation for efficient circularly polarized luminescence (CPL) via two-photon excitation (2PE). The pyridine bis-oxazoline (PyBox) core provides the chiral Ln3+ environment, while the extension of the conjugated backbone through the pyridine 4-position with a phenylacetylene unit increases the two-photon absorption cross section. This work presents an important step toward the development of chiral systems displaying enhanced nonlinear optical properties, with potential applications in imaging and sensing, as well as in photodynamic therapy due to the selective excitation of molecules within a specific focal volume.

Citation

Willis, O. G., Petri, F., De Rosa, D. F., Mandoli, A., Pal, R., Zinna, F., & Di Bari, L. (2023). Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes. Journal of the American Chemical Society, 145(46), 25170-25176. https://doi.org/10.1021/jacs.3c05957

• Journal Article Type: Article
• Acceptance Date: Oct 18, 2023
• Online Publication Date: Nov 8, 2023
• Publication Date: Nov 22, 2023
• Deposit Date: Nov 8, 2023
• Publicly Available Date: Nov 8, 2023
• Journal: Journal of the American Chemical Society
• Print ISSN: 0002-7863
• Electronic ISSN: 1520-5126
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 145
• Issue: 46
• Pages: 25170-25176
• DOI: https://doi.org/10.1021/jacs.3c05957
• Public URL: https://durham-repository.worktribe.com/output/1901868