Recent advances on photobleachable visible light photoinitiators of polymerization

Dumur, Frédéric

doi:10.1016/j.eurpolymj.2023.111874

Cited by 24 publications

(22 citation statements)

References 328 publications

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“…Common one-component photoinitiators have disadvantages, such as poor absorption properties and low reactivity toward some monomers, which limit their application. 29,30 The solution to this problem was found to be coumarin derivatives. Chromophores based on them have been used as proton abstractors in such photoinitiator types as carboxylic esters [31][32][33] and ketones 34 as well as in one-component photoinitiators as oximes.…”

Section: Introductionmentioning

confidence: 99%

Push–pull coumarin-based one-component iodonium photoinitiators for cationic nanocomposite 3D-VAT printing

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Push–pull coumarin-based one-component iodonium photoinitiators for cationic nanocomposite 3D-VAT printing

et al. 2023

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“…Consequently, the statement that the main advantage of visible light photopolymerization is the higher light penetration within the photocurable resins than in the case of UV light is not applicable to all resins. In complement to this first point, one of the main drawbacks of visible light photopolymerization remains the difficulty of obtaining colorless coatings [33]. Indeed, UV photoinitiators are colorless compounds, enabling the ability to obtain easily colorless polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, visible light photopolymerization makes use of dyes absorbing in the visible range, and these dyes are often responsible for the final color of the polymers. In order to address this issue, major efforts have been devoted to developing photo-bleachable photo-initiating systems, with more or less success [33].…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 depicts the light penetration only in the light-scatter ing system, which cannot be generalized to all photocurable systems because most pho tocurable resins are transparent and not light-scattering. Consequently, the statement tha the main advantage of visible light photopolymerization is the higher light penetration within the photocurable resins than in the case of UV light is not applicable to all resins In complement to this first point, one of the main drawbacks of visible light photopoly merization remains the difficulty of obtaining colorless coatings [33]. Indeed, UV photoin itiators are colorless compounds, enabling the ability to obtain easily colorless polymers Conversely, visible light photopolymerization makes use of dyes absorbing in the visible range, and these dyes are often responsible for the final color of the polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, UV photoin itiators are colorless compounds, enabling the ability to obtain easily colorless polymers Conversely, visible light photopolymerization makes use of dyes absorbing in the visible range, and these dyes are often responsible for the final color of the polymers. In order to address this issue, major efforts have been devoted to developing photo-bleachable photo initiating systems, with more or less success [33]. This effort is also supported by the wide range of applications using photopolymer ization.…”

Section: Introductionmentioning

confidence: 99%

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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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Creation of periodic structures in a thick photopolymerizing layer

Mensov,

Polushtaytsev

2024

J of Applied Polymer Sci

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The possibility of optical creation of polymer structures with a periodic distribution of the refractive index in a layer of a photopolymerizing composition, the thickness of which significantly exceeds the depth of field of the used projection system, is considered. Nonlinear wave processes in such an irreversible photorefractive medium for grating‐forming radiation are considered. Using computer simulation, modes of stable self‐channeling of closely propagating light beams have been found, as a result of which regular extended waveguide tracks can be obtained. The results of experiments on the creation of thick polymer gratings using a conventional incoherent projection system are demonstrated. In a composition based on industrial monomer OCM‐2, gratings with a period of 10 μm and a thickness of more than 1 mm were obtained.

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Recent advances on photobleachable visible light photoinitiators of polymerization

Cited by 24 publications

References 328 publications

Push–pull coumarin-based one-component iodonium photoinitiators for cationic nanocomposite 3D-VAT printing

Push–pull coumarin-based one-component iodonium photoinitiators for cationic nanocomposite 3D-VAT printing

Recent Advances on Quinoxaline-Based Photoinitiators of Polymerization

Creation of periodic structures in a thick photopolymerizing layer

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