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2 article(s) from Noirbent, Guillaume

Towards new NIR dyes for free radical photopolymerization processes

Haifaa Mokbel,
Guillaume Noirbent,
Didier Gigmes,
Frédéric Dumur and
Jacques Lalevée

Beilstein J. Org. Chem. 2021, 17, 2067–2076, doi:10.3762/bjoc.17.133

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Graphical Abstract

Scheme 1: Investigated NIR dyes.

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Scheme 2: Other used chemicals.

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Scheme 3: Synthetic routes to compounds Ca, Cb, and CNa.

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Scheme 4: Synthetic routes to CI1, CI3, CI4, and CI6–CI9.

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Scheme 5: The metathesis reaction enabling the formation of “soft” salts CBPh1-CBPh4.

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Figure 1: Visible–NIR spectra of NIR dyes in ACN. A) (1) CBPh1, (2) CBPh2, (3) CBPh3, (4) CBPh4, (5) Ca, (6) ...

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Figure 2: Photopolymerization profiles of PETIA monomer under air (acrylate functions conversion vs irradiati...

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Figure 3: Photopolymerization profiles of PETIA monomer under air (acrylate functions conversion vs irradiati...

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Scheme 6: Pictures of polymers obtained for a thickness of 1.4 mm, using a NIR dye/iod/amine 0.1:3:2, %w/w/w ...

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Scheme 7: Proposed mechanism for the photochemical reactivity of NIR dyes in a three-component PIS.

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Figure 4: A) Photopolymerization profiles of PETIA/epoxy blend 1:1, w/w under air (acrylate and epoxy functio...

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Supp Info

Full Research Paper

Published 16 Aug 2021

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Organometallic vs organic photoredox catalysts for photocuring reactions in the visible region

Aude-Héloise Bonardi,
Frédéric Dumur,
Guillaume Noirbent,
Jacques Lalevée and
Didier Gigmes

Beilstein J. Org. Chem. 2018, 14, 3025–3046, doi:10.3762/bjoc.14.282

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Figure 1: Typical oxidative and reductive cycle for a photoredox catalyst (PC).

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Figure 2: Transitions involved in absorbing species containing π, σ and n electrons.

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Figure 3: Ligand to metal charge transfer (illustrated here for a d⁶ metal complex).

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Figure 4: Metal to ligand charge transfer (illustrated here for a d⁵ metal complex).

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Scheme 1: Structures of additives involved in the photoredox catalytic cycles.

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Figure 5: Catalytic cycles involved with iodonium salt and (A) (TMS)₃SiH, (B) NVK and (C) EDB.

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Scheme 2: Structures of photoredox metal-based catalysts.

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Scheme 3: Photocatalytical cycle for the Ru complex.

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Scheme 4: Structures of photoredox organocatalysts.

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Scheme 5: Diversity of the chemical structures of photoredox organocatalysts.

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Scheme 6: Structures of benchmarked monomers.

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Scheme 7: Structure of the CARET additive.

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Scheme 8: Photoredox catalysis mechanism of a visible light-mediated living radical polymerization. (Abbrevia...

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Review

Published 12 Dec 2018

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