Recent advances on photoinitiating systems designed for solar photocrosslinking polymerization reactions

Dumur, Frédéric

doi:10.1016/j.eurpolymj.2023.111988

Cited by 21 publications

(10 citation statements)

References 328 publications

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“…This result is unprecedented in the literature for oxime esters. 45 To the best of our knowledge, no oxime esters activable with sunlight has been reported yet. Markedly, the proposed approach does not require monomer purification (to remove the stabilizers) in agreement with the high reactivity of the photoinitiators.…”

Section: Resultsmentioning

confidence: 99%

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Carbazole-fused coumarin based oxime esters (OXEs): efficient photoinitiators for sunlight driven free radical photopolymerization

et al. 2023

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Section: Resultsmentioning

confidence: 99%

“…This result is unprecedented in the literature for oxime esters. 45 To the best of our knowledge, no oxime esters activable with sunlight has been reported yet.…”

Section: Sunlight Initiated Polymerizationmentioning

confidence: 99%

Carbazole-fused coumarin based oxime esters (OXEs): efficient photoinitiators for sunlight driven free radical photopolymerization

et al. 2023

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“…46 However, to the best of our knowledge, OXEs reported in this work constitute the best chromophores for sunlight polymerization after the four aforementioned structures. 47,48 Especially, the strength of our newly designed naphthoquinone derivatives relies on the remarkable TMPTA conversion that can be determined after only 5 min of sunlight irradiation, outperforming dye 8, CP7, CP9, or CP11 (see Table 2). Because the photoinitiator content used in this work is much lower than those four photoinitiating systems (dye 8, CP7, CP9, and CP11), it also supports the reduction of the monomer conversions.…”

Section: Oxe-based Multicomponentmentioning

confidence: 99%

Naphthoquinone-Based Oxime Esters for Free Radical Photopolymerization under Sunlight or a Blue Light-Emitting Diode

Zhang,

Song,

Dietlin

et al. 2024

Ind. Eng. Chem. Res.

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Free radical polymerization initiated under visible light or sunlight remains one of the major challenges in the photopolymer chemistry area. Because of the low light intensity of modern light sources (light-emitting diodes, LEDs) and the mismatch of their absorption spectra with that of irradiation sources, commercial or usual photoinitiators often exhibit poor polymerization efficiency under blue light or sunlight. In this work, eight naphtho[2,3-d]thiazole-4,9-dione benzaldehyde-based oxime esters were developed as type I photoinitiators and in multicomponent photoinitiating systems with good light absorption properties in the visible region, especially at 405 and at 450 nm. Compared to the benchmark photoinitiator (diphenyl(2,4,6trimethylbenzoyl)phosphine oxide, TPO), some of our initiators furnished similar or better photoinitiation performance than the reference photoinitiator upon exposure to LED@405 nm. Compared to TPO, most of the newly proposed photoinitiators used in multicomponent photoinitiating systems could furnish performance on par with that of the reference system upon exposure to LED@405 nm and LED@450 nm. Among the most interesting results of this study, good final acrylate function conversions could be obtained during the free radical polymerization of trimethylolpropane triacrylate within 1 h of sunlight exposure and by using our type I photoinitiators in solar multicomponent photoinitiating systems when combined with iodonium salt and aromatic amine.

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“…Another emerging research topic concerns the design of sunlight photoinitiators [248]. Indeed, Sun is the cheapest light source available on Earth.…”

Section: Photopolymerization Under Sunlightmentioning

confidence: 99%

Recent Advances on Quinoxaline-Based Photoinitiators of Polymerization

Dumur

2023

Catalysts

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Photopolymerization offers a unique opportunity to convert liquid monomers to polymers using light as the activation source. Recently, major efforts have been devoted to developing visible light photo-initiating systems, and the search for new dyes that can be incorporated into photocurable resins and polymerize a resin within a few seconds is still ongoing. With the aim of exploring a maximum of structures to reach this goal, quinoxaline has been identified to be a promising scaffold for the design of UV-centered and visible light photo-initiating systems. In this review, an overview of the different quinoxaline-based dyes will be given. In order to evidence the interest in these structures, comparisons with reference systems will be given.

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Recent advances on photoinitiating systems designed for solar photocrosslinking polymerization reactions

Cited by 21 publications

References 328 publications

Carbazole-fused coumarin based oxime esters (OXEs): efficient photoinitiators for sunlight driven free radical photopolymerization

Carbazole-fused coumarin based oxime esters (OXEs): efficient photoinitiators for sunlight driven free radical photopolymerization

Naphthoquinone-Based Oxime Esters for Free Radical Photopolymerization under Sunlight or a Blue Light-Emitting Diode

Recent Advances on Quinoxaline-Based Photoinitiators of Polymerization

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