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Microscopie par génération de somme de fréquences optiques : application aux polymères de coordination chiraux

Abstract : We have built a set-up to perform sum frequency generation (SFG) microscopy in order to study isotropic chiral media. This set-up was first validated with molecules of bi-2-naphthol in liquid solution and sol-gel matrices. We have established the experimental conditions to limit the bleaching phenomena of the chromophore by two-photon absorption. Next, we have conducted a study of chiral coordination polymers produced through the self-assembly of chiral organic ligands and metal ions in solutions. We have measured a chiral SFG signal developing while films of chiral coordination polymers and complexes are drying. Thus we show that SFG microscopy specific to isotropic chiral media makes it possible to detect the coordination process of chiral coordination polymers in the condensed phase and monitor the establishment of the solid phase.
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Gregory Taupier. Microscopie par génération de somme de fréquences optiques : application aux polymères de coordination chiraux. Optique [physics.optics]. Université de Strasbourg, 2016. Français. ⟨NNT : 2016STRAE027⟩. ⟨tel-02003374⟩

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