2,7-Fluorenediyl-Bridged Complexes Containing Electroactive “Fe(η5-C5Me5)(κ2-dppe)C≡C–” End Groups: Molecular Wires and Remarkable Nonlinear Electrochromes - Université de Bordeaux
Article Dans Une Revue Organometallics Année : 2015

2,7-Fluorenediyl-Bridged Complexes Containing Electroactive “Fe(η5-C5Me5)(κ2-dppe)C≡C–” End Groups: Molecular Wires and Remarkable Nonlinear Electrochromes

Résumé

The 2,7-fluorenyl-bridged Fe(?5-C5Me5)(?2-dppe)[C≡C(2,7-C13H6Bu2)C≡C]Fe(?5-C5Me5)(?2-dppe) (1a), its extended analogue Fe(?5-C5Me5)(?2-dppe)[C≡C(1,4-C6H4)C≡C(2,7-C13H6Bu2)C≡C(1,4-C6H4)C≡C](?5-C5Me5)(?2-dppe)Fe (1b), and the corresponding mononuclear complexes Fe(?5-C5Me5)(?2-dppe)[C≡C(2-C13H7Bu2)] (2a) and Fe(?5-C5Me5)(?2-dppe)[C≡C(1,4-C6H4)C≡C(2-C13H7Bu2)] (2b), which model half of these molecules, have been synthesized and characterized in their various redox states. The molecular wire characteristics of the dinuclear complexes were examined in their mixed-valent states, with progression from 1a[PF6] to 1b[PF6] resulting in a sharp decrease in electronic coupling. The cubic nonlinear optical properties of these species were investigated over the visible and near-IR range, a particular emphasis being placed on their multiphoton absorption properties; the complexes are shown to function as redox-switchable nonlinear chromophores at selected wavelengths, and the more extended derivatives are shown to exhibit the more promising NLO performance

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Chimie
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hal-01231160 , version 1 (14-10-2024)

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Floriane Malvolti, Cédric Rouxel, Amédée Triadon, Guillaume Grelaud, Nicolas Richy, et al.. 2,7-Fluorenediyl-Bridged Complexes Containing Electroactive “Fe(η5-C5Me5)(κ2-dppe)C≡C–” End Groups: Molecular Wires and Remarkable Nonlinear Electrochromes. Organometallics, 2015, 34 (22), pp.5418-5437. ⟨10.1021/acs.organomet.5b00769⟩. ⟨hal-01231160⟩
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