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Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes.

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.

SUBMITTER: Willis OG

PROVIDER: S-EPMC10683000 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes.

Willis Oliver G OG Petri Filippo F De Rosa Davide F DF Mandoli Alessandro A Pal Robert R Zinna Francesco F Di Bari Lorenzo L

Journal of the American Chemical Society 20231108 46

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 Ln<sup>3+</sup> 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 displ ...[more]

PMID: 37937987

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