Cubane Cu 4 I 4 (phosphine) 4 Complexes as New Coinitiator for Free Radical Photopolymerization: Towards Aromatic Amine-Free Systems - Archive ouverte HAL
Article Dans Une Revue Polymer Chemistry Année : 2021

Cubane Cu 4 I 4 (phosphine) 4 Complexes as New Coinitiator for Free Radical Photopolymerization: Towards Aromatic Amine-Free Systems

Résumé

The investigation of copper-iodide cubane derivatives as new co-initiators for the free radical polymerization (FRP) of acrylate monomers under mild irradiation conditions is described for the first time here. These tetranuclear Cu(I)-based complexes have general formula Cu4I4(phosphine)4, where phosphine is triphenylphosphine (Cu1) or diphenylphosphine (Cu2). In the presence of commercial Type II photoinitiators such as isopropylthioxanthone (ITX) or camphorquinone (CQ), this class of co-initiators achieves high final conversions of the reactive functional groups. Comparison between the aromatic amine, such as ethyldimethylaminobenzoate (EDB) used as benchmark hydrogen donor, and these copper-based co-initiators are made, which demonstrates that the latter can be considered as a valid, environmental-friendly, alternative to toxic aromatic amines. Markedly, photoluminescent materials can be generated thanks to the presence of cubanes linked to the polymer network.
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Dates et versions

hal-03432108 , version 1 (17-11-2021)

Identifiants

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Fatima Hammoud, Mahmoud Rahal, Julien Egly, Fabrice Morlet-Savary, Akram Hijazi, et al.. Cubane Cu 4 I 4 (phosphine) 4 Complexes as New Coinitiator for Free Radical Photopolymerization: Towards Aromatic Amine-Free Systems. Polymer Chemistry, 2021, 12 (19), pp.2848-2859. ⟨10.1039/D1PY00277E⟩. ⟨hal-03432108⟩
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