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Elian, C., Mourot, B., Benbouziyane, C., Malval, J.-P., Lajnef, S., Peyrot, F., Massuyeau, F., Siri, O., Jacquemin, D., Pascal, S. & Versace, D.-L. (2023) Tris-benzo[cd]indole Cyanine Enables the NIR-photosensitized Radical and Thiol-ene Polymerizations at 940 nm. Angewandte Chemie International Edition, 62 e202305963.
Added by: Richard Baschera (2023-10-16 10:23:07) Last edited by: Richard Baschera (2023-10-16 10:24:47) |
| Type de référence: Article DOI: 10.1002/anie.202305963 Numéro d'identification (ISBN etc.): 1521-3773 Clé BibTeX: Elian2023 Voir tous les détails bibliographiques  |
Catégories: IMN Mots-clés: Near-Infrared, Photoinitiator, Photopolymerization, Polymethine, spectroscopy Créateurs: Benbouziyane, Elian, Jacquemin, Lajnef, Malval, Massuyeau, Mourot, Pascal, Peyrot, Siri, Versace Collection: Angewandte Chemie International Edition |
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| Liens URLs https://onlinelibr ... 002/anie.202305963 |
| Résumé |
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A near-infrared-absorbing heptamethine (HM+) incorporating three bulky benzo[cd]indole heterocycles was designed to efficiently prevent self-aggregation of the dye, which results in a strong enhancement of its photoinitiating reactivity as compared to a parent bis-benzo[cd]indole heptamethine (HMCl+) used as a reference system. In this context, we highlight an efficient free-radical NIR-polymerization up to a 100 % acrylates C=C bonds conversion even under air conditions. Such an important initiating performance was obtained by incorporating our NIR-sensitizer into a three-component system leading to its self-regeneration. This original photoredox cycle was thoroughly investigated through the identification of each intermediary species using EPR spectroscopy.
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| Notes |
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_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.202305963
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