Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes,Journal of the American Chemical Society

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Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2023-11-08 , DOI: 10.1021/jacs.3c05957
Oliver G Willis ₁ , Filippo Petri ₁ , Davide F De Rosa ₂ , Alessandro Mandoli ₁ , Robert Pal ₂ , Francesco Zinna ₁ , Lorenzo Di Bari ₁

Affiliation

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.

中文翻译：

手性Eu配合物的双光子圆偏振发光

我们报道了具有扩展π共轭的手性镧系元素配合物的合成，通过双光子激发（2PE）实现有效的圆偏振发光（CPL）。吡啶双恶唑啉 (PyBox) 核心提供手性 Ln ³⁺环境，而共轭主链通过吡啶 4 位与苯乙炔单元的延伸增加了双光子吸收截面。这项工作向开发具有增强的非线性光学特性的手性系统迈出了重要的一步，由于在特定焦点体积内选择性激发分子，因此在成像和传感以及光动力治疗方面具有潜在的应用。

更新日期：2023-11-08

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