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Article Dans Une Revue Journal of Organic Chemistry Année : 2024

Difluoro Dipyridomethene Boron Complexes: Synthesis, Characterization, and Ab Initio Calculations

Résumé

Molecular engineering studies on the meso-cyano difluoro dipyridomethene boron complexes are presented and two series (a and b) of novel fluorophores are extensively studied. Halogenated derivatives were reacted under Suzuki-Miyaura or Sonogashira cross coupling reactions to introduce electron-donating or electron-withdrawing functional groups on positions 1 and 2 of the aromatic ligand. All derivatives were obtained in 14-90% yields and studied in detail by structural, photophysical and computational analyses. Both series display excellent emissive properties in solution with blue to orange fluorescence emission upon blue light absorption and promising features as solid emitters. All the spectroscopic measurements are supported and confirmed by first-principles theoretical calculations combining TD-DFT and CC2. Series b, featuring an aryl substituent onto position 1 of the aromatic core, showed significantly large Stokes shifts values.

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Chimie
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Dates et versions

hal-04467302 , version 1 (20-02-2024)

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Carlotta Figliola, Alexandra Sutter, Thomas Papineau, Camille Chériaux, Pascal Retailleau, et al.. Difluoro Dipyridomethene Boron Complexes: Synthesis, Characterization, and Ab Initio Calculations. Journal of Organic Chemistry, In press, ⟨10.1021/acs.joc.3c02491⟩. ⟨hal-04467302⟩
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